Steel 60s2a characteristics application for a knife

The mechanical properties of steel made with alloying additives meet the stringent requirements for industrial use. To obtain steel with certain properties, silicon, manganese, chromium, titanium, molybdenum, tungsten, nickel and other chemical elements are introduced during the smelting process. One of the special steel grades produced is 60C2A, which has high strength and pronounced springing properties. The main feature of this steel is its increased yield strength. This feature makes it possible to produce various products with spring properties.

Chemical composition

In addition to iron, grade 60C2A steel contains about 0.6% carbon, 1.6 to 2% silicon, 0.6 to 0.9% manganese, up to 0.3% chromium, up to 0.25% nickel and up to 0. 2% copper. In addition, impurities of sulfur and phosphorus are allowed in amounts up to 0.025%.

Purpose of alloying components

Steel is an alloy of iron and carbon in an amount of up to 2.06%. Increasing the amount of carbon increases sensitivity to heat treatment, hardenability, and the ability to obtain greater strength and hardness. But at the same time, ductility decreases, the metal becomes brittle, unable to withstand shock loads.

In order to balance the properties of the material, simultaneously obtain opposite characteristics (hardness and toughness, strength and corrosion resistance), and reduce the influence of impurities that cannot be completely eliminated, 60C2A steel includes alloying components. They make it possible to neutralize the disadvantages introduced by a high amount of carbon. And in some ways replace it, getting even better results.

Silicon is introduced into the composition for the purpose of deoxidation. Possessing a greater affinity for oxygen than iron, it displaces it from oxides in the melt.

In addition to deoxidation in amounts up to 1%, silicon has a beneficial effect on strength and elasticity.

Manganese, like silicon, displaces iron from oxides. In addition, it prevents the formation of iron sulfides, which increase the tendency to form hardening cracks that occur during thermal hardening of parts with complex shapes.

The inclusion of manganese in the alloy up to 1%, like silicon, increases strength and toughness. In large quantities, it causes grain growth, which reduces strength indicators, in particular the ability to withstand shock loads.

Thus, silicon and manganese mutually complement each other in composition. They work together to increase strength, endurance and toughness. But the reasons leading to increased fragility of the alloy are not allowed to develop.

Chromium, like silicon and manganese, has a greater affinity for oxygen than iron. It helps protect the melt from oxidation and increases hardenability.

Nickel helps protect the alloy from corrosion and, in small quantities, reduces the susceptibility to hardening cracks.

Copper in small (up to 1%) quantities increases strength and resistance to corrosion. At higher concentrations, it leads to the precipitation of intermetallic compounds along grain boundaries, which significantly changes the mechanical properties during tempering.

Comparing the chemical composition and the influence of individual components on the properties of the alloy, it can be assumed that the 60C2A grade should have high strength, elasticity, and impact strength, achieved by observing special heat treatment techniques.

steel 60S2A

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steel 60С2Н2А Steel 45ХН

Brand 60С2А – purpose

Structural spring steel 60C2A is used for the manufacture of heavily loaded springs, spring rings, torsion shafts, collets, spring washers, friction discs, and other products operating at temperatures up to 2500C.

Additional information. When the material is heated, grain growth does not occur. Steel 60S2A is highly prone to decarburization; after heat treatment it has high strength/elasticity, good resistance to alternating/shock loads; after isothermal hardening, the material acquires the best properties.

Steel 60S2A - domestic analogues

Material 60С2А – characteristics

Brand 60С2А – technological features

Heat treatment

Forging

Welding

Flock sensitivity

Not sensitive.

cutting

Tendency to temper brittleness

Not inclined.

Steel 60S2A - chemical composition

Mass fraction of elements no more than, %:

Material 60С2А – mechanical properties

Hardness, MPa

Temperature of critical points, 0С

Impact strength, J/cm2

Endurance limit, Pa

Grade 60С2А – physical properties

Steel 60S2A - exact and closest foreign analogues

Material 60С2А – area of ​​application

Steel grade 60C2A is used in mechanical engineering for the manufacture of spring-type products operating at temperatures up to 2500C.

Legend

Mechanical properties

Weldability

Physical properties

You can buy structural spring steel 60S2A in St. Petersburg by calling +. Specialists will place your order and advise you on the assortment, prices, and delivery conditions.

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Mechanical properties of steel 60С2А

The strength properties of 60C2A are determined by the heat treatment modes performed. Since the interest is in the performance characteristics of the parts, the article does not discuss the performance of steel in castings. They are of practical interest only for technologists of large metalworking enterprises engaged in the production of rolled metal.

Here we will consider the strength indicators of commercial steel in the form of a circle and a strip.

As already mentioned in the general description of the 60C2A brand, optimal performance is achieved by quenching in oil and subsequent tempering in order to relieve internal stresses.

Round steel after quenching and tempering has a tensile strength of 12.7 kg/sq. mm, proof strength 11.7 kg/sq. mm. The proximity of the yield point to the tensile strength indicates the high elastic properties of steel.

The endurance limit of 60C2A with a symmetrical tensile cycle is 49 kg/sq. mm, torsion 29.5 49 kg/sq. mm.

To understand the meaning of these numbers, it is worth remembering that the tensile strength of steel 3 is about 37 kg/sq. mm.

Specifications

The main characteristics of 60S2A steel include:

Fragility

The price of 60S2A steel varies around 50 rubles. per kilogram. It varies based on the quantity of steel, timing and delivery method.

Application of grade 60С2А

The scope of use of steel is determined by its properties. Steel 60S2A is widely used for the manufacture of heavily loaded structural elements experiencing alternating loads.

These are various springs, friction discs, Grover washers, spring rings, collets, torsion bars - elastic rods that work in torsion. The latter are found in suspensions of heavy tracked and wheeled vehicles, elastic shafts of multi-threaded gearboxes that transmit high power.

Analogs of steel 60S2A

The following can be used as analogues of the material:

• Japanese SUP6, SUP7;
• German 60MnSiCr4, 60SiCr7, 65Si7;
• Chinese 0Si2Mn;
• French 61SiCr7;
• American steels 9260, G92600.

quote: Originally posted by TENCH:

As I understand it, its properties are closer to ShKh15 than to 65G?

quote: Originally posted by GAU-8A:

Why did it happen? 60С2А spring-spring class, Lord, is it really so difficult to google?!

Those. closer to 65G? Is there any point in making “metal”?

General information about steel 65g

This steel is very popular due to its relatively low cost . It belongs to the spring-spring type and passes the bluing and blackening procedures very well. Due to its characteristics, it is used to make throwing knives; it is extremely rarely used to create cutting knives. This is due to the fact that such steel oxidizes extremely quickly and becomes rusty.

If we talk about hardening, then this material is not afraid of overheating. However, if the temperatures are high enough, the toughness decreases quite quickly, which in turn inevitably leads to large grain growth in the fine texture of the fibers.

Due to the addition of Manganese, such an alloy is also called deoxidized steel; this applies to absolutely all materials containing such a component. Knives acquire their properties in cases where pearlite transformation has been achieved during the hardening process.

Results

To summarize, it is worth noting that such steel is often used for sporting edged weapons, as well as weapons for tournaments. After all, it is precisely in this scenario of use that shock resistance and low cost of the product are required.

Knives will be made from this steel for a long time, but still in more specialized industries. Although knives made from such steel are almost never used in the kitchen, especially recently, there are plenty of people who like to make blades from the remains of such an alloy.

Source

Cons of steel 65g

Like any alloy, this one has a number of disadvantages that prevent this material from being used for certain purposes:

• Due to the fact that this material belongs to the group of carbon-containing compounds, it is extremely susceptible to corrosion.
• Although this steel is easy to sharpen, it loses its edge quite quickly. That is why you need to watch the cutting edge and its alignment, and constantly sharpen the knife.
• Quite significant restrictions on use.

Advantages and disadvantages are more relative; they cannot always be applied to all knives made from a given alloy. This is due to the fact that each manufacturer’s production technology is either slightly or seriously different from each other.

Standards

Decoding the brand

The steel grade designation contains a set of letters and numbers, each of which indicates the percentage of elements and their name:

• The mass of carbon, which is expressed in hundredths of a percent;
• One or more letters express the alloying element;
• A fraction of a percent, rounded to the nearest whole number.

Content of elements in steel 60С2А, %:

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Density of high alloy steels with special properties

The density values ​​of the following grades of high-alloy steels are presented: steel G13, G20Kh12F, Kh21Kh15T, R18. The steel density values ​​in the table are indicated depending on the temperature - in the range from 0 to 1100°C. Density dimension - kg/m3. Additionally, you can familiarize yourself with the table of substance densities.

1. Kazantsev E.I. Industrial furnaces. Reference manual for calculations and design.
2. Brand of steels and alloys. 2nd ed., add. and corr. A. S. Zubchenko, M. M. Koloskov and others. Under the general editorship. A. S. Zubchenko - M.: Mechanical Engineering, 2003. 784 p.: ill.

Technological properties

knives made of steel 65G

Structural spring steel 65G, produced in accordance with GOST 14959 and is characterized by high elasticity and wear resistance. It is not for nothing that this steel is used for the manufacture of springs, bearing housings and springs, etc. for knives. Of course, this is not the best option for kitchen, hunting, tourist and similar knives, but there are two groups of bladed weapons for which 65 G is the best option. Did you guess it? Of course, these are throwing knives and tournament swords.

The photo shows a throwing knife “Twist” with an all-metal blade made of 65G steel

Decoding steel

Characteristics of steel (briefly)

• Wear resistance
• Viscosity
• Strength
• Elasticity
• Tear resistance
• Impact resistance
• The knives show a good cut (although this is of no use for throwing knives)
• Relatively low cost

Steel for tournament weapons

All of the above is relevant not only for the manufacture of throwing knives, but also for the production of tournament weapons (swords, checkers, etc.).

In the photo: Tournament weapons for the “Heroic Fun” festival in the Oruzheynik park (Zlatoust) were made from 65G steel.

Minuses

As noted above, steel belongs to the carbon group and is susceptible to corrosion. Therefore, do not forget two important rules: keep the blades dry and clean and periodically lubricate them with castor oil. Caring for knives made from 65G steel is comparable to caring for knives made from Damascus steel.

Chemical composition

Heat treatment modes

The temperature range for hardening steel 65G is in the range of 800-830 °C. Subsequent high tempering at 160-200 °C with further cooling in still air makes it possible to obtain a steel hardness of 45-47 HRC. This grade of steel is not afraid of overheating, however, when hardened at high temperatures, the impact strength of the steel begins to decrease.

physical characteristics