Steel 17G1S - structural low-alloy for welded structures

Total information

Substitute

Steel: 09G2, 09G2DT, 09G2T, 10G2S.

Type of delivery

Long products, including shaped steel: GOST 19281-73, GOST 2590-71, GOST 2591-71, GOST 8240-72. Thick sheet GOST 19282-73, GOST 5520-79, GOST 5521-76, GOST 19903-74. Thin sheet GOST 17066-80, GOST 19903-74, GOST 19904-74. Strip GOST 103-76, GOST 82-70. Forgings and forged blanks GOST 1133-71.

Purpose

Various parts and elements of welded metal structures operating at temperatures from -70 to +425 °C.

Spheres of “life” became 09g2s

This alloy is an ideal raw material for creating rolled sheets or shaped products. The properties of the products are prescribed in state standards (GOST 19281-73, 19281-89).

Steel properties:

• allows processing by welding;
• resistant to mechanical damage;
• used at temperatures from -70 to +425 degrees Celsius.

Steel 09g2s copes with many years of high loads and serious deformations. This alloy is used in different regions of the country due to its ability to cope with harsh climatic conditions.

Spheres of “life” of alloy 09g2s:

• transport and mechanical engineering - helps to launch complex transport systems in cities, to make businesses in areas of extreme danger profitable;
• oil industry - pipe laying in the far north of Russia, installation of complex welded parts;
• mechanical engineering – production of steam boilers and other equipment for working at high temperatures;
• urban construction - production of square pipes for creating advertising structures, fencing in parks, and so on.

Welded metal structures made from this iron alloy are in particular demand. They remain flexible and durable under any operating conditions. Craftsmen of various types like to use 09g2s steel to create pipes and other products. This alloy is used for urban improvement. Finished structures are easy to weld and difficult to destroy, and they also weigh little. The widespread use of rolled steel is explained by its physical properties and low cost.

Composition and structure

Before studying the composition of steel 09g2s, you need to understand the decoding of the markings:

1. The number in front is the amount of the main component of the composition besides iron. In this case, it is carbon, the percentage of which reaches 0.09%. The hardness and strength of the material depends on its quantity.
2. The letter after the numerical designation indicates the presence of chemical treatment of the steel during production. A certain amount of manganese is introduced into the composition. The number after the letter indicates the percentage of the introduced component.
3. The last symbol indicates the presence of an alloying component. In this case, it is silicon, the percentage of which cannot exceed 1%.

List of additional alloying components, harmful impurities:

• silicon - from 0.5 to 0.8%;
• nickel - no more than 0.3%;
• manganese - from 1.3 to 1.7%;
• phosphorus - no more than 0.035%;
• sulfur - no more than 0.04%;
• chromium - no more than 0.3%;
• arsenic - no more than 0.08%;
• copper - up to 0.3%;
• nitrogen - up to 0.008%.

The amount of iron is from 96 to 97%, carbon - up to 0.12%. The total percentage of alloying components can reach 2.5%. The composition requirements are specified in GOST 27772-88.

09G2S - chemical composition

The steel is classified as silicon-manganese. In accordance with the requirements of GOST 27772-88, it fully complies with C345 steel. The latter is used for the manufacture of building structures.

In accordance with the labeling system adopted in our country, composition 09G2S is deciphered as follows:

• carbon (C) - 0.09%;
• manganese (Mn) - 2%;
• silicon (Si) - no more than 1%.

The amount of alloying components in the steel is not so high, which is why 09G2S steel is classified as low-alloy. This alloy forms the basis of a whole family of steels. For example, - 09g2, 09g2dt, 09g2t, 10g2s and many others. The characteristics of alloys of this family are approximately similar.

decoding, density, mechanical properties, analogues. Application of low alloy steel 09g2s.

Grade 09g2s – structural steel, low-alloy, carbon. The amount of additives in it does not exceed 2.5%, and the numerical and alphabetic symbols in the name indicate their percentage in the metal. Decoding the marking according to GOST 5058-65 means that the carbon content in steel is 0.09%, the letter “G” in combination with the number “2” indicates the addition of 2% manganese, and “C” means a one-percent addition of silicon. Analogs of this steel - 09g2, 09g2dt, 09g2t, 10g2s, as well as 19Mn-6 are also easily deciphered according to GOST. The main advantage of this brand is its good weldability, which is carried out both with heating and heat treatment, and without heating.

Main characteristics of steel 09g2s

The mechanical properties of 09g2s steel make it possible to use it for various building structures, since it has increased strength even in parts that are not very thick. The range of its temperature use is significant: -70 – +450°C, because it has the stability of its inherent qualities.

The value of the technological properties of grade 09g2 is associated with the presence of:

• high endurance limit, especially after obtaining a two-phase ferrite-martensite structure
• plasticity
• easy weldability without restrictions
• hardenability
• no overheating
• lack of flake sensitivity
• resistance to cracking
• resistance to temper brittleness, etc.

According to GOST 19281-89, a rolled metal category is added to the grade, as well as to other low-alloy steels. For example, 09g2s -12 will mean that a steel sheet made from 09g2s was tested for impact strength at a temperature of -40°C.

Application of brand 09g2s

The high mechanical resistance of 09G2S to extremely low temperatures makes it possible to lay oil and gas pipelines in the north of the Russian Federation, to produce welded transitions, tees, flanges and other pipeline parts with unique frost-resistant qualities. At the same time, steam boilers and containers necessary for operating at high temperatures are made from it. Two-layer anti-corrosion sheets and profiles for agricultural machines are another area of ​​application for alloy 09g2s.

Advantages and disadvantages

The characteristics of 09G2S steel meet modern requirements for the quality of structural materials and allow it to be used for the production of products:

• operated in a wide temperature range - from -70 to +425 degrees;
• experiencing significant force loads;
• subjected to various types of mechanical processing.

Among the main advantages are excellent technological qualities:

• high strength ensuring the safety of the structure;
• durability – the service life of products exceeds 30 years;
• lack of tendency to temper brittleness;
• stable viscosity characteristics when tempering steel;
• good weldability without loss of ductility;
• ease of processing;
• wear resistance;
• low specific gravity;
• efficiency;
• safety;
• resistance to the formation of microcracks;
• The optimum ratio of price and quality.

Like any material, 09G2S steel has numerous pros and cons. These include low corrosion resistance. Therefore, for products that are used in aggressive environments, additional protective coating is necessary.

Features and Benefits

from - 70 to +450 degrees

Advantages

Considering the main advantages of this grade of steel, it is necessary to highlight the following:

• the ability to withstand exposure to negative temperatures, as well as maintain its performance characteristics in the Far North;
• high strength characteristics, due to which steel can be used in the manufacture of bridges, machines and other critical structures;
• low costs for installation work. This effect is achieved due to the absence of the need for preheating of the material and its further heat treatment, including hardening, tempering and annealing.

Physical properties of the alloy

T	E 10- 5	a 10 6	l	r	C	R 10 9
hail	MPa	1/Grad	W/(m deg)	kg/m3	J/(kg deg)	Ohm m
20
100	11.4
200	12.2
300	12.6
400	13.2
500	13.8
T	E 10- 5	a 10 6	l	r	C	R 10 9

Technological properties

Forging temperature

Start 1250 °C, end 850 °C.

Weldability

welds without restrictions. Welding methods: RDS, ADS under submerged arc and gas shield, ESW.

Machinability

In the normalized, tempered state at σB = 520 MPa Ku tv.spl. = 1.6, Ku b.st. = 1.0.

Tendency to release ability

not inclined

Flock sensitivity

not sensitive

Critical point temperature

Critical point	°C
Ac1	725
Ac3	860
Ar3	780
Ar1	625

Impact strength

Impact strength, KCU, J/cm2

Delivery condition, heat treatment	+20	-40	-70
GOST 19281-73. Long and shaped rolled products with a cross section of 5-10 mm.	64	39	34
GOST 19281-73. Long and shaped rolled products with a cross section of 10-20 mm.	59	34	29
GOST 19281-73. Long and shaped rolled products with a cross-section of 20-100 mm.	59	34
GOST 19282-73. Sheets and strips with a cross section of 5-10 mm.	64	39	34
GOST 19282-73. Sheets and strips with a cross section of 10-160 mm.	59	34	29
GOST 19282-73. Sheets after hardening, tempering (Transverse samples) with a cross section of 10-60 mm	49	29

Endurance limit of steel 09G2S

σ-1, MPa	σB, MPa
235	475

Yield strength of steel 09G2S

Test temperature, °C /σ0.2
250	300	350	400
225	195	175	155

Weldability

No limits

Welding with restrictions

Difficult to weld

Heating

Heat treatment

No	up to 100–1200С	200–3000С
No	There is	annealing

CONTROL METHODS

4.1. Sampling to determine the chemical composition is carried out according to GOST 7565.

4.2. Chemical analysis of steel is carried out according to GOST 22536.0—GOST 22536.12, GOST 27809, GOST 12346, GOST 12347, GOST 12348, GOST 12350, GOST 12351, GOST 12352, GOST 12355, GOST 12356, GOST 12357, GOST 1 2358, GOST 12359, GOST 12361, GOST 12364, GOST 18895 or other methods that provide the necessary accuracy of analysis.

In case of disagreement in quality assessment, the assessment is carried out using the methods established in the standard. (Changed edition, Amendment No. 1).

4.3. Carbon equivalent (Ce) is calculated using the formula

where C, Mn, Si, Cr, Ni, Cu, V, P are the mass fractions of carbon, manganese, silicon, chromium, nickel, copper, vanadium and phosphorus.

4.4. Control of surface quality and dimensions of rolled sheets according to GOST 14637, long products - according to GOST 535.

4.5. Delamination of rolled products during cutting is controlled by inspection of the edges and ends without the use of magnifying devices.

If necessary, the quality of the metal on the edges of sheets and universal strips is checked by removing chips: in this case, bifurcation of the chips serves as a sign of discontinuity of the metal.

4.5.1. Ultrasonic testing of the continuity of rolled sheets is carried out in accordance with GOST 22727.

4.6. Sampling and production of samples for mechanical and technological tests are carried out in accordance with GOST 7564. Samples are cut lengthwise from shaped rolled products and universal strips, and across the rolling direction from sheet metal. When testing for impact bending on samples with a sharp notch, samples are taken along the rolling direction.

For rolled products with a diameter or side of a square greater than those indicated in the table. 1 and 7, it is allowed to determine the mechanical properties on samples cut from blanks, forged or rolled to the dimensions regulated by Table. 1 and 7. The standards of mechanical properties in this case must correspond to table. 1 and 7.

(Changed edition, Amendment No. 1).

4.7. From each rod, sheet, universal strip, roll selected for control, one sample is taken for tensile and bending tests, and two samples for each temperature are taken to determine impact strength. The quality of bent profiles is controlled by the workpiece.

4.8. Tensile testing of rolled products is carried out on samples of five times the length in accordance with GOST 1497.

(Changed edition, Amendment No. 1).

4.9. The bending test is carried out according to GOST 14019.

4.10. Determination of the impact strength of rolled products with a nominal thickness of up to 10 mm inclusive is carried out on samples of type 1, 2 or 3, and for categories 8 and 9 - types 11, 12, 13 according to GOST 9454. For rolled products with a thickness of more than 10 mm, the impact strength is determined on samples of type 1, and for categories 8 and 9 - type 11 according to GOST 9454.

The impact strength of shaped and strip products with a thickness of 3-4 mm, and sheet products with a thickness of less than 5 mm can be determined on samples with a width equal to the thickness of the product.

(Changed edition, Amendment No. 1).

4.11. Impact strength after mechanical aging is determined according to GOST 7268 on samples with a U-type concentrator. The thickness of the samples must correspond to those adopted in clause 4.10.

4.12. When testing samples with a type U concentrator, a reduction in impact strength on one sample is allowed by 15%; when testing samples with a type V concentrator, a reduction in impact strength on one sample is allowed by 30%; in this case, the average value of the test results must not be lower than the standards in Table. 6 and 7.

4.13. When the manufacturer uses statistical and other non-destructive methods for monitoring mechanical properties in accordance with regulatory and technical documentation, the manufacturer may not carry out control of mechanical properties according to the methodology provided for by this standard. The manufacturer guarantees compliance of manufactured products with the requirements of this standard. In case of disagreement in quality assessment and during periodic product quality checks, control methods provided for in this standard are used.

Manufacturing

The basis for the manufacture of the material is cast iron. It goes through a long optimization process, during which the amount of carbon in the composition increases and the basic properties of the metal improve. To achieve certain technical characteristics, additional alloying additives are added.

Manufacturing technologies:

1. Open-hearth method. An industrial furnace is loaded with scrap, cast iron, charge, and additional components. A pile of metal is melted using a torch of burning fuel. Once the scrap is melted, alloying components are added to the bath. When carrying out the procedure, special open-hearth furnaces are used, which can smelt up to 900 tons of metal at a time.
2. Electrothermal method. During production, an industrial electric furnace is used, with which you can accurately set the heating mode and control the metal production process. The main advantage of the technology is the ability to obtain metal with the lowest content of harmful impurities (phosphorus, sulfur). Thanks to the ability to set very high heating temperatures, it is possible to obtain specialized types of steel with unique technical characteristics.
3. Converter. Molten cast iron is poured into the melting apparatus and purged with oxygen. The impurities contained in the cast iron begin to oxidize. Oxidation releases a large amount of heat, which increases the overall temperature to 1600 °C.

Main characteristics and properties

When choosing a metal, much attention is paid to the main characteristics. We include:

1. Hardness index. It can vary over a wide range and depend on whether heat treatment has been carried out. The hardness of steel 20 is maintained at 163 MPa. This is quite enough for the manufacture of various products that have high wear resistance.
2. Density is also taken into account. Less dense materials are used to make products that will be lightweight. In the case under consideration, the indicator is 7.85 k/cm3.
3. When considering the main characteristics, the yield strength and tensile strength are taken into account. They are considered when creating various projects. Metal St 20 can be improved in order to increase the characteristics of the material.
4. The structure is characterized by the fact that it is not prone to temper brittleness and the formation of flakes.
5. The heat treatment of steel 20 can significantly increase the service life of the product. It is carried out under certain conditions. For example, for forging, the structure is heated to a temperature of 1,280 degrees Celsius.
6. If necessary, it is possible to weld parts.
7. The impact strength of steel 20 determines that the metal is often used in the manufacture of shafts and other similar products that can be used to create elements used in the creation of various mechanisms. The elastic modulus is also taken into account when considering the basic properties of the metal.
8. The average thermal conductivity coefficient determines that the structure can heat up quickly enough, but at the same time heat is removed with high efficiency.

Properties St 20

The mechanical properties of steel 20 determine the fairly wide distribution of this grade in mechanical engineering and other industries. As previously noted, technical characteristics can be improved by heat treatment or alloying. Restructuring the structure of the metal makes it possible to increase the hardness of the surface layer; by adding other chemicals, special qualities can be imparted, for example, corrosion resistance.

Heat treatment involves changing the structure due to exposure to a certain temperature. Critical points are selected depending on the characteristics of the chemical composition. The features of such a procedure include the following points:

To provide the required impact, special equipment is used. Examples include blast furnaces and induction furnaces. For a long period, blast furnaces were used, but they are inferior to induction furnaces. The second version is suitable for installation in small workshops. Critical points are taken into account when carrying out the procedure under consideration. It is worth considering that they have already been identified for all metals, so there is no need to conduct the research again. The workpiece is heated to the required temperature, after which the initial restructuring of the structure occurs

The holding time is also an important indicator that must be taken into account, as is the heating rate. Attention is also paid to the cooling process. Workpieces that are too large are cooled in air, as problems arise in creating the required environment

For a long period of time, cooling was carried out in water, but this led to the appearance of scale. It is possible to ensure a higher quality of heat treatment by using oil as a cooling medium. However, when cooling in oil, one should take into account the high probability of toxic smoke formation and surface ignition due to high temperature.

Steel hardening colors

In many cases, surface defects are formed after heat treatment. That is why the procedure is used for workpieces or products that are created taking into account the allowance. After hardening, tempering is often carried out, which allows you to relieve internal stresses and reduce the likelihood of damage to the product when dropped or subjected to an impact load.

Areas of application

Areas of application:

1. Manufacturing of parts that are subject to heavy loads - metal corners, channels, axles, beams.
2. Assembly of vehicles, industrial equipment, construction of metal structures. Due to their resistance to different temperatures, the structures can be used in different climatic conditions.
3. Application in the chemical industry. The material is resistant to chemicals.
4. Manufacturing of poles, fences, frames for public benches, gazebos, swings, children's slides, horizontal bars.
5. Production of heating equipment, steam boilers, machines for agricultural activities.

To use the material in other areas of industry, various alloying components are added to its composition.

Application area

As previously noted, the scope of application of this metal is very extensive:

1. Creation of bridges for industrial and civil purposes.
2. Production of equipment and other elements for the mechanical engineering, shipbuilding and chemical industries.
3. Production of tanks and boilers that are exposed to high temperatures during operation.
4. Creation of backbone networks.
5. Production of various tools and technical equipment, devices.
6. Production of agricultural and other equipment.

The low-alloy steel in question is used in more than 15 industries. Today it is one of the most sought-after metals. In addition, it is subjected to heat treatment, which can significantly improve performance.

In conclusion, we note that the release form can be represented by a square or round cross-section. Strips are also produced, the width of which varies from 40 to 160 mm, and the thickness of 12-50 mm. Sheet metal is supplied to production workshops, classified according to indicators such as manufacturing method and thickness.

What does the transcript look like?

Knowing the labeling makes it possible to directly understand what exactly is offered by the manufacturer and what features the product has. From a technical point of view, the marking 09g2s means the following:

1. 09 - exact proportion of carbon in the total alloy;
2. G2 - presence of manganese and its fluctuation in the total volume - 2%;
3. C—presence of silicon, the proportion of which does not exceed 1%.

However, one should not think that the composition of steel includes only those elements that are indicated in the marking.

In addition to manganese and silicon, the overall composition is supplemented by sulfur, nitrogen, nickel, copper and phosphorus. However, the share of additional components rarely exceeds 1%, so they are not mentioned in the labeling.

Also, decoding concerns not only doping, but also other criteria. For example, the following should be included here:

• Structure and changes after the hardening process;
• Main purpose;
• Manufacturing method;
• Chem. composition of the material.

As a result, there are analogues for these indicators on the domestic market. You can often hear that 09g2s is steel 345. However, the second indicator is intended for builders and does not mean the chemical composition, but the fluidity indicator, which corresponds to the steel standard.

Steel 09g2s - characteristics, application and properties of steel 09g2s

Steel 09g2s is a very popular steel, used both in construction and in many industries. There are domestic and foreign analogues of this type. It is most often used for the manufacture of pipes, rolled metal and welded metal structures, the temperature range of which is from -70 to 4250C9 with permissible loads on them).

Steel 09g2s 12: decoding

Understanding how labeling is formed allows you to clearly understand what product the manufacturer represents, as well as its main features. For those who are interested in details about 09g2s, the breakdown of steel is as follows:

• 09 – quantitative fraction of carbon content in the alloy (0.09%);
• G2 is manganese and its part in the entire volume fluctuates around 2% (the exact figure ranges from 1.3 to 2%);
• C - denotes silicon, the absence of numbers after the symbol indicates that it is less than 1%.

Thus, the decoding of 09g2s clearly looks like this:

Element	, %
C (carbon)	up to 0.12
Si (silicon)	0,5 – 0,8
Mn (magnesium)	1,3- 1,7
Ni (nickel)	up to 0.3
S (sulfur)	up to 0.04
P (phosphorus)	up to 0.035
Cr (chromium)	up to 0.3
N (nitrogen)	up to 0.008
Cu (copper)	up to 0.3
As (arsenic)	up to 0.08
Fe (iron)	96-97

As can be seen from the table, the interpretation of steel 09g2s is not limited to only three alloying components. In addition to carbon, silicon and manganese, it is supplemented by the following elements: nickel, sulfur, phosphorus, chromium, nitrogen, copper, etc. The percentage component of alloying metals is no more than 1-2 total%.

Marking 09g2s on a steel sheet

Also, for steel 09g2s, not only the alloying level is taken into account, but also other factors. Here are just a few of them that are significant for a particular case:

• constructiveness (purpose);
• eutectoid (structure: hexagonal, cubic, etc.; changes after hardening, etc.);
• production method (open hearth, conventional or electric steel);
• chem. steel composition 09g2s (in this case low-alloy).

As a result, analogues appear in relation to which questions like the following are often asked: is 345 steel 09g2s? The designation C345 was introduced for builders, where the numbers do not indicate the chemical composition of the material, but its important property - the yield strength; for steel 09g2s it corresponds to the construction standards C345, which is reflected in a number of GOSTs (27772-88). Below we consider several classic options, including when one grade of steel corresponds to several strength classes

Below, several classic options are considered, including when one grade of steel corresponds to several strength classes.

Technical characteristics: subtleties of using reference manuals

The properties of 09g2s steel are largely determined by the chemical composition of the alloy, its specific parameters, which today are quite accurately calculated by metallurgists.

Steel grade 09g2s has the following critical points:

• Ac1 = 732, when austenite transforms into pearlite during cooling processes;
• Ac3(Acm) = 870 (s – from French chauffage/heating) the end point of cementite dissolution;
• Ar3(Arcm) = 854 (refroidissement – ​​cooling) the beginning of the release of Fe3C;
• Ar1 = 680 hypoeutectoid steel, corresponds to ferrite precipitation

The symbols are classic, numbers 1 and 3 indicate the numbers of points on the graph. The symbols cm usually mark hypereutectoid steels.

If we talk about other features of St 09g2s, the following characteristics are noted: easy weldability of the material. For this purpose, RDS, ADS under flux and gas protection are used. Only products that have undergone chemical-thermal treatment cannot be welded.

The mechanical properties of steel 09g2s are tabular values ​​that were developed by a number of GOST standards and describe the material at room temperature, as well as for its other states.

Among the important mechanical properties of 09g2s steel are the following:

• Yield strength for permanent deformation, measured in MPa;
• Relative values ​​of elongation at break and contraction;
• Impact strength (use under load is one of the main applications);
• Brinell hardness (HB).

Strength class of steel 09g2s: the table for the list of grades includes the one indicated, which, as already noted, corresponds to C345. This also includes a number of other brands. Thus, steels that are different in chemical composition and even in the method of producing steel can have the same strength class. This data can be found for 09g2s according to GOST 19281-2014; the characteristics of the alloys are presented in convenient tables that are easy to navigate. You can view (download) GOST 19281-2014 here.

Analogs

Using low-alloy steels grade 09g2s, like other Russian-made metals containing carbon and manganese, it is possible to produce various types of rolled products and pipe products.

Class. Low-alloy structural steel for welded structures.

Some foreign analogues: 9MnSi5, 09G2S, 9SiMn16.

The offered metal meets both the requirements of GOST and international standards. Before shipment, each batch of goods undergoes a thorough check for defects, as well as compliance with the declared chemical composition. We are ready to provide all the necessary documents for rafting.

Material 09G2S - exact and closest foreign analogues

Bulgaria

Hungary

Germany

China

Romania

Japan

BDS	MSZ	DIN, WNR	G.B.	STAS	JIS
09G2S	VH2

13Mn6

9MnSi5

12Mn 9SiMn16 SB49

Steel 09G2S - domestic analogues

Rolled metal grade	Substitute
09G2S	09G2, 09G2DT, 09G2T, 10G2S

Steel-Maximum: Steel 09G2S

This alloy belongs to the class of structural low-alloy steels. It is used for the manufacture of various metal parts and elements for welded metal structures operating under pressure and at various temperatures.

This type of steel is classified as silicon-manganese. Performed in accordance with GOST 27772-88. Meets the requirements for building structures C345.

The exact chemical composition of steel 09G2S

09G2S

carbon – 0.09% manganese – up to 2% silicon – less than 1%

The steel is low alloy since the total amount of additives ranges from 2.5%. In addition to the main elements, the composition of the 09G2S brand is supplemented by several minor ones.

Nickel (Ni)	Chromium (Cr)	Copper (Cu)	Arsenic (As)	Sulfur (S)	Phosphorus (P)	Nitrogen (N)
less than 0.3	less than 0.3	less than 0.3	up to 0.08	less than 0.04	less than 0.035	up to 0.008

Advantages and application of steel 09G2S

Steel 09G2S

does not overheat and does not harden during the welding process. Its plastic properties remain at a high level, and the grain size does not increase. All these characteristics make this alloy ideal for use in welded structures. The welding process can be carried out with or without preheating (up to approximately 100°-120°).

It is this brand that allows you to create the most thin-walled elements, which is excellent for its use in shipbuilding and the construction field. In addition, the material is quite strong and durable, which makes the structure safe.

Sheets made of steel 09G2S bend easily. This allows you to create complex structures for the gas, oil and chemical industries. In such areas, steel products from this grade are presented in the form of pipes and pipeline fittings.

Advantages of steel 09G2S

• High mechanical strength
• Durability – the service life of parts made from this steel is more than 30 years
• Wide operating temperature range – from -70°С to +425°С
• No tendency to temper brittleness
• After tempering, the viscosity of steel does not decrease
• Does not lose ductility and does not change grain size when welding elements

Properties of steel 09G2S

The specific gravity of this alloy is 7.85 g/cm3. The weldability of this steel is not limited.

The critical point temperature is:

• Ac1 = 725°
• Ac3(Acm) = 860°
• Ac3(Acm) = 860°
• Ar1 = 625°

The material has no flake sensitivity and no tendency to temper brittleness.

Forging temperature:

• start – 1250°С
• end – 850°С

Cutting machinability is available in the normalized tempered state δB = 520 MPa, Kυ b.st = 1.0 K υ tv. spl=1.6

Yield strength at different temperatures:

• 250°C = 2207.25 kgf/cm2 (225 MPa)
• 300°C = 1912.95 kgf/cm2 (195 MPa)
• 350°C = 1716.75 kgf/cm2 (175 MPa)
• 400°С = 1520.55 kgf/cm2 (155 MPa)

Domestic and foreign analogues

Russia	09G2, 09G2T, 09G2DT, 10G2S
Germany	13Mn6, 9MnSi5
Bulgaria	09G2S
Hungary	Vh3
Romania	9SiMn16
Japan	SB49
China	12Mn

Comparison with another steel grade

For example, for 09g2s and st3 the difference is determined primarily by the carbon content. For St3sp it is 10-20 times higher than what is found in the low-alloy alloy.

St3sp – refers to carbon alloys. This grade of steel is characterized by high brittleness and rapid destruction at low temperatures. If the brand being described has a lower limit of -70 degrees, then the object of comparison is only -20.

The quality of St3sp is ordinary, which indicates a likely high presence of sulfur and phosphorus. Then, like 09g2s is high quality. All other advantages are already in the previous description. It only remains to note that the cost of this brand is significantly higher than the price of St3sp.

Video about low alloy steels:

Which is better: galvanized or stainless steel?

In order to successfully solve various technological problems and not get confused: buy a galvanized sheet instead of a stainless steel one, contact a trusted, reputable supplier. Although both metals are corrosion-resistant, and when constructing structures with a service life of no more than 10 years, it is quite possible to get by with cheaper galvanized steel, for critical objects it is still not worth skimping on quality.

A guarantee that you are purchasing a certified product will be choosing as a partner a reliable supplier with attractive market offers. Today we are the best and are ready to supply any volumes of highest quality metal products in the shortest possible time.

Density of different types of steel

A table of densities of common types of steel at room temperature is provided. The density of steel depends significantly on the type, which is determined by its chemical composition and purpose.

Light steels with low density include some alloyed, heat-resistant and stainless steels. The minimum density of common grades of such steels is 7640-7670 kg/m3.

The presence of a large amount of nickel in steel makes its density higher. For example, the density of nickel-based alloys can reach 8500 kg/m3. The heaviest is high-speed tool steel. It contains heavy metals such as tungsten and molybdenum. The density of such steel varies in the range from 8000 to 8800 kg/m3.

Steel density by type Steel typeExamples Density, kg/m3

Carbon quality	Art.08, Art.10, Art.15, 20, 40, 50, 85, 15K, A12, A30, OS	7800-7870
Low alloy steels	15G, 40G, 10G2, 16GS, 18G2S, 45G2, 15Х, 35Х, 50Х	7730-7850
Alloy steels	18ХГТ, 25ХГМ, 40ХС, 35ХМ, 40ХФА, 20ХН, 15Н5А	7640-7880
Purpose steels	65G, 55S2, 60S2G, 70S2ХА, ШХ15, EI 229	7650-7850
Stainless, heat-resistant and heat-resistant	03Х8СУЦ, 12Х18Н10Т, 10Х12НД, 03Н18К9М5Т	7670-8000
Iron-nickel alloys	ХН32Т, ХН35ВТК, ХН45У, 06ХН46Б, DI65	7700-8170
Nickel-based alloys	EI 929, KhN60Yu, EP 709, KhN70Yu, KhN78T, KhN80TBYu	7900-8570
Carbon and alloy	U7, U8, U10, 9ХС, ХВГ	7745-7850
Die steel	Х6ВФ, Х12, 7Х3, 3Х3М3Ф, EP 761, EI 958, DI 37	7700-7800
Roll steel	9Х, 9Х2В, 55Х, 60ХН, 75ХМ, 7Х2СМФ	7800-7900
High speed	11R3AM3F2, R6M3, R9, R12, R18, R18K5F2	8000-8800
Steels for castings	15L, 30L, 70L, 40HL, 25GSL, 05Х26Н6М2Д2АБФЛ	7730-7850
Nickel-based alloys for castings	KhN58VKMTYuBL, KhN65VMTYuL, TsNK 7P, TsNK 17P	8000-8790

Use of steel 17G1S

The durability of the finished steel allows it to be used in a wide variety of areas. However, the main direction is the production of industrial parts, which include bends, flanges, splitters and other elements of pipelines and highways.

Download GOST 20295-85

Since the bulk of these objects are underground, their surface is subject to strong pressure and temperature changes. Therefore, it is important to choose an item that can withstand these factors without problems for many decades. If necessary, you can choose any foreign analogue of the 17G1S model: Fe510D1 (Germany), SM490A (Japan), 350W (Canada), Fe52CFN (European Union), 16Mn (China) and many others. Alternative options are almost identical in characteristics, and have no restrictions for welded structures.

Pipeline outlet made of steel 17G1S

Density of common grades of steel at different temperatures

The table shows the density values ​​of steel of common grades depending on temperature. It should be noted that the density of steel changes little when its temperature changes. The density of various steel grades in kg/m3 dimensions is given in the table at temperatures from 20 to 900°C.

When steel is heated, it increases in volume and its density becomes less. For example, the density of stainless steel 12Х18Н9 at 20°С is equal to 7900 kg/m3 or 7.9 g/cm3, and at a temperature of 900°С the density of this steel decreases and becomes equal to 7510 kg/m3 or 7.51 g/cm3. Of the steels presented in the table, we can distinguish the lightest steel with the minimum density. Such steel is stainless heat-resistant steel 15Х25Т (Х25Т, EI439), the density of which at room temperature is 7600 kg/m3 or 7.6 g/cm3. The heaviest is P18 tool steel with a density of 8800 kg/m3 (8.8 g/cm3) at room temperature (20°C).

The average density of structural steel at room temperature is 7700...7900 kg/m3. For example, the density of steel 20 is 7856 kg/m3 at a temperature of 20°C. The density of steel is generally quite close to the density of iron since this metal is the basis of this alloy.

Table of steel density values ​​by grade Steel grade Temperature, °Steel density, kg/m3

02Х17Н11М2	20	8000
02X22N5AM3	20	8000
03Н18К9М5Т	20	8000
03Х11Н10М2Т	20	8000
03Х13Н8Д2ТМ (EP699)	20	7800
03X24N6AM3 (ZI130)	20	8000
06Х12Н3Д	20	7810
06ХН28МДТ (0Х23Н28М3Д3Т, EI943)	20	7960
07Х16Н6 (Х16Н6, EP288)	20	7800
Steel 08	20…100…200…300…400…500… 600…700…800…900	7871…7846…7814…7781…7745…7708… 7668…7628…7598…7602
08GDNFL	20	7850
08kp	20…100…200…300…400…500… 600…700…800…900	7871…7846…7814…7781…7745…7708… 7668…7628…7598…7602
08Х13 (0Х13, EI496)	20…100…200	7760…7740…7710
08Х17Т (0Х17Т, EI645)	20	7700
08Х17Н13М2Т (0Х17Н13М2Т)	20…100…200…300…400…500… 600…700	7900…7870…7830…7790…7750…7700… 7660…7620
08Х18Н10 (0Х18Н10)	20	7850
08Х18Н10Т (0Х18Н10Т, EI914)	20	7900
08Х22Н6Т (0Х22Н5Т, EP53)	20	7700
3Х3М3Ф	20…100…200…300…400…500… 600…700…800…900	7828…7808…7783…7754…7721…7684… 7642…7597…7565…7525
4Х4ВМФС (DI22)	20…100…200…300…400…500… 600…700…800…900	7808…7786…7757…7726…7693…7658… 7624…7581…7554…7550
4Х5МФ1С (EP572)	20…100…200…300…400…500… 600…700…800…900	7716…7692…7660…7627…7593…7559… 7523…7490…7459…7438
9ХС	20	7830
9Х2МФ	20	7840
Steel 10	20…100…200…300…400…500… 600…700…800…900	7856…7832…7800…7765…7730…7692… 7653…7613…7582…7594
10G2	20	7790
10kp	20…100…200…300…400…500… 600…700…800…900	7856…7832…7800…7765…7730…7692… 7653…7613…7582…7594
10Х11Н20Т3Р (ЭИ696)	20	7900
10Х11Н23Т3МР (EP33)	20	7950
10Kh12N3M2FA(Sh) (10Kh12N3M2FA-A(Sh))	20	7750
10Х13Н3М1Л	20	7745
10Х14Г14Н4Т (Х14Г14Н3Т, EI711)	20	7800
10Х17Н13М2Т (Х17Н13М2Т, EI448)	20…100…200…300…400…500… 600…700	7900…7870…7830…7790…7750…7700… 7660…7620
10Х18Н18У4Д (EP841)	20	7630
12MH	20…100…200…300…400…500… 600…700	7850…7830…7800…7760…7730…7690… 7650…7610
12ХН2	20	7880
12ХН3А	20…100…200…300…400…500…600	7850…7830…7800…7760…7720…7680…7640
12X2MFB (EI531)	20	7800
12X1MF (EI575)	20…100…200…300…400…500… 600…700…800…900	7800…7780…7750…7720…7680…7650… 7600…7570…7540…7560
12Х2Н4А	20…100…300…400…600	7840…7820…7760…7710…7630
12Х13 (1Х13)	20…100…200…300…400…500… 600…700…800…900	7720…7700…7670…7640…7620…7580… 7550…7520…7490…7500
12X17 (X17, EZh17)	20	7720
12Х18Н9 (Х18Н9)	20…100…200…300…400…500… 600…700…800…900	7900…7860…7820…7780…7740…7690… 7650…7600…7560…7510
12Х18Н9Т (Х18Н9Т)	20…100…200…300…400…500… 600…700…800…900	7900…7860…7820…7780…7740…7690… 7650…7600…7560…7510
12Х18Н10Т	20	7900
12Х18Н12Т (Х18Н12Т)	20…100…200…300…400…500… 600…700	7900…7870…7830…7780…7740…7700… 7850…7610
12X25N16G7AR (EI835)	20	7820
13Х11Н2В2МФ-Ш (ЭИ961-Ш)	20	7800
14Х17Н2 (1Х17Н2, EI268)	20	7750
Steel 15	20…100…200…300…400…500… 600…700…800…900	7850…7827…7794…7759…7724…7687… 7648…7611…7599…7584
15G	20	7810
15kp	20…100…200…300…400…500… 600…700…800…900	7850…7827…7794…7759…7724…7687… 7648…7611…7599…7584
15K	20	7850
15L	20	7820
15X	20…100…200…400…600	7830…7810…7780…7710…7640
15ХМ	20…100…200…300…400…500…600	7850…7830…7800…7760…7730…7700…7660
15HF	20…100…200…300…400…500… 600…700	7760…7730…7710…7670…7640…7600… 7570…7530
15Х5М (12Х5МА, Х5М)	20…100…200…300…400…500…600	7750…7730…7700…7670…7640…7610…7580
15X12VNMF(EI802, EI952)	20…100…200…300…400…500… 600…700	7850…7830…7800…7780…7760…7730… 7700…7670
15Х25Т (Х25Т, EI439)	20	7600
16GS	20	7850
17Х18Н9 (2Х18Н9)	20	7850
18Х2Н4МА (18Х2Н4ВА)	20…100…200…300…400…500…600	7950…7930…7900…7860…7830…7800…7760
18Kh12VMBFR-Sh (EP 993-Sh)	20	7850
18ХГТ	20	7800
Steel 20	20…100…200…300…400…500… 600…700…800…900	7856…7834…7803…7770…7736…7699… 7659…7617…7624…7600
20G	20	7820
20K	20	7850
20L	20	7850
20kp	100…200…300…400…500…600… 700…800…900	7834…7803…7770…7736…7699…7659… 7617…7624…7600
20X	20…100…200…400…600	7830…7810…7780…7710…7640
20ХГР	20	7800
20ХГСА	20	7760
20HML	20…100…200…300…400…500…600	7800…7780…7750…7720…7690…7650…7620
20ХН3А	20…100…300…600	7850…7830…7760…7660
20Х2Н4А	20	7850
20Х3МВФ (EI415, EI579)	20…400…500…600	7800…7690…7660…7620
20X5ML	20	7730
20Х13 (2Х13)	20…100…200…300…400…500… 600…700…800	7670…7660…7630…7600…7570…7540… 7510…7480…7450
20Х13Л	20	7740
20Х20Н13 (Х23Н13, EI319)	20…100…600…800	7820…7790…7580…7480
20Х20Н14С2 (Х20Н14С2, EI211)	20…100…600…700…800…900	7800…7760…7550…7510…7470…7420
20Х23Н18 (Х23Н18, EI417)	20…400…500…600…700…900	7900…7760…7720…7670…7620…7540
20Х25Н20С2 (Х25Н20С2, EI283)	20…100…800…900	7720…7680…7440…7390
Steel 25	20	7820
25L	20	7830
25ХГСА	20…100…200…300…400…500… 600…700	7850…7830…7790…7760…7730…7690… 7650…7610
25Х1МФ (EI10)	20…200…400…600	7840…7790…7720…7650
25Х2М1Ф (EI723)	20…100…200…300…400…500…600	7800…7780…7750…7720…7680…7650…7600
25Х13Н2 (2Х14Н2, EI474)	20	7680
Steel 30	20	7850
30G	20	7810
30L	20	7810
30X	20…100…200…300…400…500… 600…700…800…900	7820…7800…7770…7740…7700…7670… 7630…7590…7610…7560
30ХМ, 30ХМА	20…100…200…300…400…500	7820…7800…7770…7740…7700…7660
30ХН3А	20…100…200…300…400…500… 600…700…800…900	7850…7830…7800…7760…7730…7700… 7670…7690…7650…7600
30Х13 (3Х13)	20…100…200…300…400…500… 600…700…800…900	7670…7650…7620…7600…7570…7540… 7510…7480…7450…7460
31Х19Н9МВБТ (ЭИ572)	20	7960
33ХС	20	7640
34ХН3М, 34ХН3МА	20…100…200…400…600	7830…7810…7780…7710…7650
Steel 35	20…100…200…300…400…500… 600…700…800…900	7826…7804…7771…7737…7700…7662… 7623…7583…7600…7549
35G2	20	7790
35L	20	7830
35ХГСЛ	20	7800
35ХМ	20…100…200…400…600	7820…7800…7770…7770…7630
35HML	20	7840
35ХМФЛ	20	7820
37Х12Н8Г8МФБ (ЭИ481)	20	7850
38ХА	20…200…600	7850…7800…7650
38ХН3МФА	20	7900
38ХС	20	7800
38Х2МУА (38ХМУА)	20	7710
Steel 40	20	7850
40G	20	7810
40G2	20	7800
40L	20	7810
40X	20…200…500	7850…7800…7650
40HL	20	7830
40ХН	20…100…200…300…400	7820…7800…7770…7740…7700
40ХН2МА (40ХНМА)	20	7850
40ХС	20…100…200…400…600	7740…7720…7690…7620…7540
40HFA	20	7810
40Х9С2 (4Х9С2, ESH8)	20…100…200…400…600…800	7630…7610…7580…7510…7440…7390
40Х10С2М (4Х10С2М, EI107)	20…100…800	7620…7610…7430
40Х13 (4Х13)	20…100…200…300…400…500… 600…700…800	7650…7630…7600…7570…7540…7510… 7480…7450…7420
40Х24Н12СЛ (ЭИ316Л)	20	7800
Steel 45	20…100…200…300…400…500… 600…700…800	7826…7799…7769…7739…7698…7662… 7625…7587…7595
45G2	20	7810
45L	20	7800
45X	20	7820
45ХН	20	7820
45Х14Н14В2М (ЭИ69)	20…200…400…600…800	8000…7930…7840…7760…7660
Steel 50	20	7810
50G	20	7810
50G2	20	7500
50L	20	7820
50X	20	7820
50ХН	20	7860
50HFA	20…100…200…300…400…500…600	7800…7780…7750…7720…7680…7650…7610
Steel 55	20	7820
Steel 60	20	7800
60С2, 60С2А	20…100…200…300…400…500	7680…7660…7630…7590…7570…7520
65G (ZMI3)	20…100…200…400	7850…7830…7800…7730
75ХМ	20	7900
95Х18 (9Х18, EI229)	20…100…800	7750…7730…7540
Х23У5Т	20	7210
ХН32Т (EP670)	20	8160
ХН35ВТ (ЭИ612)	20	8164
KhN35VTYu (EI787)	20	8040
ХН45У (EP747)	20	7700
KhN55VMTKYu (EI929), KhN55VMTKYu-VD (EI929-VD)	20	8400
KHN58VKMTUBL (TsNK8MP)	20	8210
ХН60У (ЭИ559А)	20	7900
ХН60ВТ (ЭИ868)	20	8350
KHN60KVMYUTBL (TsNK21P)	20	8110
KHN60KVMYUTL (TsNK7P)	20	8200
KHN62MBVYU (EP709)	20	8700
KhN62MVKYu (EI867), KhN62MVKYu-VD (EI867-VD)	20	8570
KHN64VMKYUTL (ZMI3)	20	8250
KHN65VKMBYUTL (EI539LMU)	20	8220
KhN65VMTYu (EI893)	20	8790
KHN65VMTYUL (EI893L)	20	8790
KHN65KMVYUTL (ZhS6K)	20	8200
KhN67MVTYu (EP202, EI445R)	20	8360
KHN70KVMYUTL (TsNK17P)	20	8000
KhN70VMTYuF (EI826), KhN70VMTYuF-VD (EI826-VD)	20	8470
KhN70VMUT (EI765)	20	8570
ХН70У (ЭИ652)	20	7900
KHN73MBTYU (EI698)	20	8320
ХН75ВМУ (ЭИ827)	20	8430
KHN77TYUR (EI437B)	20	8200
ХН78Т (EI435)	20	8400
ХН80ТБУ (ЭИ607)	20	8300
KhN80TBYuA (EI607A)	20	8300
Х15Н60-Н	20	8200
Х20Н80-Н	20	8400
Х27У5Т	20	7190
HVG	20…100…300…600	7850…7830…7760…7660
A12	20	7830
R6M3	20	8000
R6M5K5	20	8200
P9	20	8300
R9M4K8	20	8300
P12	20	8300
P18	20	8800
U7, U7A	20	7830
U8, U8A	20…100…200…300…400…500… 600…700…800	7839…7817…7786…7752…7714…7676… 7638…7600…7852
U9, U9A	20…100…200…300…400…500… 600…700…800…900	7745…7726…7717…7690…7686…7655… 7622…7586…7568…7523
U10, U10A	20	7810
U12, U12A	20…100…200…300…400…500… 600…700…800…900	7830…7809…7781…7749…7713…7675… 7634…7592…7565…7489
ШХ15	20…100…200…300…400…500	7812…7790…7750…7720…7680…7640
SHH15SG	20	7650

Density of carbon steels

The density of carbon steel at room temperature ranges from 7.83 to 7.87 g/cm3. The table shows the density values ​​of the following carbon steels: steel 08KP, steel 08, steel 20, steel 40, steel U8, steel U12.

The density values ​​in the table are indicated depending on the temperature - in the range from 0 to 1100°C. When steel is heated, it becomes less dense. For example, the density of steel 20 is 7859 kg/m3 at a temperature of 15°C, and when heated to a temperature of 1100°C, the density of this steel decreases to 7496 kg/m3.

Note: The density of carbon steels in the table is expressed in units of kg/m3.

Density of low alloy steels

The density values ​​of the following low-alloy steels are presented: steel 15М, 12МХ, 15ХМ, 15ХФ, 30Х, 30Н3, 30ХН3, 12Х5СМА, Х6М, 30Г2, 50С2Г. The average density of low-alloy steels ranges from 7725 to 7855 kg/m3 at a temperature of 20°C. The data in the table is given depending on temperature - in the range from 0 to 1000°C. The density dimension in the table is kg/m3.

Sources

• https://vse-stali.ru/stal-konstruktsionnaya/nizkolegirovannaya-dlya-svarnyh-konstruktsij/stal-09g2s/
• https://metalloy.ru/stal/stal-09g2s
• https://pressadv.ru/stali/09g2s-harakteristiki.html
• https://svarkaipayka.ru/material/stal/tehnicheskie-harakteristiki-stali-09g2s.html
• https://ScrapTraffic.com/splav/09g2s/
• https://www.manual-steel.ru/09G2S.html
• https://www.lsst.ru/spravochnik-metalloprokata/nizkolegirovannaja-stal/stal-09g2s/
• https://tutsvarka.ru/vidy/legirovannaya-stal-09g2s-harakteristiki-primenenie-tverdost-analogi
• https://www.lsst.ru/spravochnik-metalloprokata/konstruktsionnaya-stal/stal-09g2s/
• https://tpspribor.ru/vidy-metalla/stal-09g2s-harakteristika-primenenie-i-svoystva-stali-09g2s.html
• https://thermalinfo.ru/svojstva-materialov/metally-i-splavy/plotnost-stali-temperaturnaya-zavisimost

[collapse]