Structural carbon steel of ordinary quality St0

cutting

Initial data			Machinability Ku
State	HB, MPa	sB, MPa	hard alloy	high speed steel
hot rolled	103–107	460	2,1	1,65

Characteristics of steel grade St0

St0 - Structural carbon steel of ordinary quality, welds well, welding is carried out without heating and without subsequent heat treatment, welding methods: manual arc welding, automatic submerged arc welding and gas protection, KTS, ESW.

Steel welding methods 0:

• manual arc welding
• manual argon arc welding
• automatic submerged arc welding
• mechanized welding with a consumable electrode in a carbon dioxide environment
• electroslag welding
• contact welding

For welding with a thickness of more than 36 millimeters, heating and subsequent heat treatment are recommended; it is not prone to flake sensitivity, and there is no tendency to temper brittleness. Machinability by cutting in the hot-rolled state at НВ 103-107 and σв=460 MPa, Kυ hard alloy. = 2.1 and Kυ b.st. = 1.65, has found its application in load-bearing elements of welded and non-welded structures and parts operating at positive temperatures, and is actively used in general construction solutions. This grade of steel is used to produce parts and components of freight cars, power transmission line supports, excavators and forestry equipment, offshore structures, road bridges, building structures, oil and gas platforms. Forging is carried out at temperatures from 1300 to 700 0C, cooling is carried out in air.

Material St0 – mechanical properties

Assortment	GOST	Dimensions – thickness, diameter	Heat treatment mode	t	KCU	y	d5	st	sв
		mm		0C	kJ/m2	%	%	MPa	MPa
Rental	535–2005	15–18	300
The leaf is thick	14637–89	20–23	300
Wire rod	30136–95	58–68	420–470

Delivery St0

Supplied in the form of long products, including shaped steel according to the regulations of GOST 2590-88 Hot-rolled round steel , GOST 2591-88 Hot-rolled square steel , GOST 8239-89 Hot-rolled steel I-beams , GOST 19771-93 Equal-flange bent steel angles, GOST 19772 -93 Bent steel angles, unequal flanges , GOST 8278-83 Bent steel channels, equal flanges , GOST 8281-80 , unequal , GOST 8283-93 steel trough equal flange profiles , GOST 380-94 Carbon steel of ordinary quality , GOST 85 09-93 Steel corners hot-rolled equal flange , GOST 8510-86 rolled steel angles unequal-flanged , GOST 8240-97 Hot-rolled steel channels , GOST 535-88 Rolled bars and shaped carbon steel of ordinary quality , GOST 2879-88 Rolled hot-rolled hexagonal steel, GOST 19903-2015 Hot rolled sheet products , GOST 19904-90 Cold-rolled sheets , GOST 16523-97 Rolled thin sheets of high-quality and ordinary quality carbon steel for general purpose, GOST 503-81 Cold-rolled low-carbon steel strip, GOST 103-76 Hot-rolled steel strip , GOST 82-70 Hot-rolled steel Wide-band universal, GOST 3282-74 Wire Steel low-carbon general purposes , GOST 17305-71 Carbon structural steel wires, GOST 10705-80 steel power steel pipes , GOST 10706-76 Pipes steel eight-dimensional , GOST 3262-75 Pipes steel water and gap-pipes .

Grade St0 – physical properties

t	r	R 109	E 10-5	l	a 106	C
0C	kg/m3	Ohm m	MPa	W/(m deg)	1/Grad	J/ (kg deg)
20	7850

Delivery type St0

B20 - Classification, nomenclature and general standards	GOST 380-2005;
B22 – Long and shaped rolled products	GOST 535-2005; GOST 5422-73; GOST 8239-89; GOST 8240-97; GOST 8278-83; GOST 8281-80; GOST 8283-93; GOST 8510-86; GOST 8509-93; GOST 30136-95; GOST 9234-74; GOST 10551-75; GOST 30565-98; GOST 19771-93; GOST 19772-93; GOST 19240-73; GOST 2590-2006; GOST 2591-2006; GOST 19425-74; GOST 2879-2006; GOST 11474-76;
B23 - Sheets and strips	GOST 8568-77; GOST 14637-89; GOST 14918-80; GOST 103-2006; GOST 19903-74; GOST 82-70;
B24 - Tapes	GOST 6009-74; GOST 3560-73;
B34 - Tapes	GOST 503-81;
B62 — Steel pipes and connecting parts for them	GOST 3262-75;
B71 – Low carbon steel wire	GOST 3282-74;
B72 – Medium and high carbon steel wire	GOST 17305-91;

Steel St0 - exact and closest foreign analogues

Austria	England	Belgium	Bulgaria	Hungary	Germany	European Union	Spain	Italy
ONORM	B.S.	NBN	BDS	MSZ	DIN, WNR	EN	UNE	UNI
St00H

15HR

15HS

Fe310-0

HR15

S185

FE310-0 ASt0

S185

Fe310O

S185

1.0035

1.0035

Fe310-0

S185

St33

St33-1

St33-2

1.0035

S185

A310-0

S185

Fe320

S185

Inter	China	Poland	Romania	USA	France	Czech	Sweden	Japan
ISO	G.B.	PN	STAS	—	AFNOR	CSN	SS	JIS
E185
Fe310

Q195

Q195-b

Q195-F

Q195-Z

St0S OL32.1 A283(A)

A366

Gr.A

A33

S185

10000

10004

1300 SS330

Brand: steel, metal St0

Brand: St0

Brand:	St0
Classification:	Structural carbon steel of ordinary quality
Application:	for minor aspects of structures and non-critical parts: decking, fittings, lining, washers, railings, casings, cladding and others.
Foreign analogues:

C	S	P
up to 0.23	up to 0.06	up to 0.07

Weldability:	no limits.
Flock Sensitivity:	not sensitive.
Tendency to temper brittleness:	not inclined.

Assortment	Size	Eg.	sв	sT	d5	y	KCU	Thermal change
—	mm	—	MPa	MPa	%	%	kJ/m2	—
Rolled goods, GOST 535-2005	300	15-18
Thick sheet, GOST 14637-89	300	20-23
Wire rod, GOST 30136-95	420-470	58-68

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	7850

Foreign analogues of the material
Both exact and closest analogues are indicated!

USA

Germany

Japan

France

England

European Union

Italy

Belgium

Spain

China

Sweden

Bulgaria

Hungary

Poland

Romania

Czech

Austria

Inter

—

DIN,WNr

JIS

AFNOR

B.S.

EN

UNI

NBN

UNE

G.B.

SS

BDS

MSZ

PN

STAS

CSN

ONORM

ISO

Gr.A

Fe310-0

S185

St33

St33-1

St33-2

Fe310-0 HR15 S185

Q195-F Q195-Z Mechanical properties : sв — Short-term strength limit, [MPa] sT — Proportional limit (yield strength for permanent deformation), [MPa] d5 — Elongation at break, [%] y — Relative narrowing, [%] KCU — Impact strength, [kJ/m2] HB — Brinell hardness, [MPa] Physical properties: T — Temperature at which these properties were obtained, [Deg] E — Modulus of elasticity of the first kind, [MPa] a — Coefficient of thermal (linear) expansion (range 20o - T), [1/degree] l — Thermal conductivity coefficient (heat capacity of the material), [W/(m deg)] r — Material density, [kg/m3] C — Specific heat capacity of the material (range 20o — T), [J/(kg deg)] R — Electrical resistivity, [Ohm m] Weldability: no limits — welding is performed without heating and without subsequent heat treatment limited weldability — welding is possible when heated to 100-120 degrees. and subsequent heat treatment difficult to weld — to obtain high-quality welded joints, additional operations are required: heating to 200-300 degrees. during welding, heat treatment after welding - annealing

Mechanical properties

HRСе	HB	KCU	y	d5	sT	sв
MPa	kJ/m2	%	%	MPa	MPa
Rockwell hardness	Brinell hardness	Impact strength	Relative narrowing	Elongation at break	Yield strength	Short-term strength limit

Ku	s0.2	t-1	s-1
Relative machinability factor	Proof of yield strength with 0.2% tolerance when loaded to plastic strain value	Torsional endurance limit (symmetrical cycle)	Endurance limit under compression-tension (symmetrical cycle)

N	number of deformation/stress cycles sustained by an object under load before fatigue failure/crack appears

Mechanical properties of steel St0

Mechanical properties of steel St0 according to GOST 380-94 regulations is sold in the form of hot-rolled steel with a cross-section of up to 20 mm, from 20 mm to 40 mm, over 40 mm to 100 mm, and also over 100 mm. Tensile strength 300-470 MPa. Relative elongation after rupture is 23 – 26%.

Mechanical properties of St3ps steel according to the regulations of GOST 16523-89 and GOST 19903-2006 in the form of hot-rolled sheets. The cross-section is made from 1.5 mm inclusive to 100 mm inclusive. The elongation rates after rupture are 15%, 18%, 20 and 23%. Below is the data in tabular form:

ND	Heat treatment mode	Section, mm	σв, N/mm2	δ, %	Bend
			no less
GOST 535-2005	Hot rolled	Up to 20	300	18
		Over 20 to 40	300	18
		Over 40	300	15
GOST 14637-89	Hot rolled	Up to 20	300	23	d=2.5a
		St. 20 to 40	300	23	d=3.5a
		St. 40 to 160	300	20	d=3.5a
GOST 380-71 (not supplied)	Hot rolled products	Up to 20	300	23
		St. 20 to 40	300	22
		St. 40	300	20
GOST 16523-70 (Transverse samples) (not supplied)	Hot rolled sheets	Up to 2.0	300	-11
		St. 2.0 to 3.9	300	-13
	Cold rolled sheets	Up to 2.0	300	-14
		St. 2.0 to 3.9	300	-16

Steel St0 – State Enterprise Stalmash

reference Information

Characteristics of the material: steel St0.

Steel grade: St0

Steel classification: Structural carbon steel of ordinary quality

Application of steel St0: For minor aspects of structures and non-critical parts: decking, fittings, lining, washers, railings, casings, cladding and others.

Mechanical properties at T=20oC steel St0.

Assortment	Size	Eg.	sв	sT	d5	y	KCU	Thermal change
—	mm	—	MPa	MPa	%	%	kJ/m 2	—
Rolled hot rolled products.	up to 20	300	23
Rolled hot rolled products.	20 — 40	300	22

Technological properties of steel St0.

Weldability:	no limits.
Flock Sensitivity:	not sensitive.
Tendency to temper brittleness:	not inclined.

Foreign analogues of steel St0 Attention! Both exact and closest analogues are indicated.

USA

Germany

Japan

France

England

European Union

Italy

Belgium

Spain

China

Sweden

Bulgaria

Hungary

Poland

Romania

Czech

Austria

—

DIN,WNr

JIS

AFNOR

B.S.

EN

UNI

NBN

UNE

G.B.

SS

BDS

MSZ

PN

STAS

CSN

ONORM

Fe310-0

S185

St33

St33-1

St33-2

Fe310-0

HR15

S185

Q195-F

Q195-Z

Designations:

Mechanical properties :
sв	— Short-term strength limit, [MPa]
sT	— Proportional limit (yield strength for permanent deformation), [MPa]
d5	— Elongation at break, [%]
y	— Relative narrowing, [%]
KCU	— Impact strength, [kJ/m2]
HB	— Brinell hardness, [MPa]

Weldability:
no limits	— welding is performed without heating and without subsequent heat treatment
limited weldability	— welding is possible when heated to 100-120 degrees. and subsequent heat treatment
difficult to weld	— to obtain high-quality welded joints, additional operations are required: heating to 200-300 degrees. during welding, heat treatment after welding - annealing

yaruse.ru

Structural carbon steel of ordinary quality St0 - characteristics, properties, analogues

This page shows the technical, mechanical and other properties, as well as the characteristics of steel grade St0.

Classification of material and application of grade St0

Brand: St0 Material classification: Structural carbon steel of ordinary quality Application: for minor aspects of structures and non-essential parts: decking, fittings, lining, washers, railings, casings, cladding and others.

Chemical composition of material St0 as a percentage

C	S	P
up to 0.23	up to 0.06	up to 0.07

Mechanical properties St0 at a temperature of 20oC

Assortment	Size	Eg.	sв	sT	d5	y	KCU	Thermal change
—	mm	—	MPa	MPa	%	%	kJ/m2	—
Rolled goods, GOST 535-2005	300	15-18
Thick sheet, GOST 14637-89	300	20-23
Wire rod, GOST 30136-95	420-470	58-68

Technological properties St0

Weldability:	no limits.
Flock Sensitivity:	not sensitive.
Tendency to temper brittleness:	not inclined.

Explanation of symbols, abbreviations, parameters

Mechanical properties :
sв	— Short-term strength limit, [MPa]
sT	— Proportional limit (yield strength for permanent deformation), [MPa]
d5	— Elongation at break, [%]
y	— Relative narrowing, [%]
KCU	— Impact strength, [kJ/m2]
HB	— Brinell hardness, [MPa]

Physical properties:
T	— Temperature at which these properties were obtained, [Deg]
E	— Modulus of elasticity of the first kind, [MPa]
a	— Coefficient of thermal (linear) expansion (range 20o— T), [1/degree]
l	— Thermal conductivity coefficient (heat capacity of the material), [W/(m deg)]
r	— Material density, [kg/m3]
C	— Specific heat capacity of the material (range 20o—T), [J/(kg deg)]
R	— Electrical resistivity, [Ohm m]

Weldability:
no limits	— welding is performed without heating and without subsequent heat treatment
limited weldability	— welding is possible when heated to 100-120 degrees. and subsequent heat treatment
difficult to weld	— to obtain high-quality welded joints, additional operations are required: heating to 200-300 degrees. during welding, heat treatment after welding - annealing

Other brands in this category:

Please note that this information about the St0 brand is provided for informational purposes. The parameters, properties and composition of the actual St0 grade material may differ from the values ​​given on this page. More detailed information about the St0 grade can be found on the information resource Brand of steel and alloys. You can check with our managers for information about the availability, delivery times and cost of materials. If you find inaccuracies in the description of materials or errors found, please inform the site administrators using the feedback form. Thanks in advance for your cooperation!

c-met.ru

Steel grade St0 technical specifications, explanation

Purpose of steel St0

St0 steel is used for minor structural elements and non-critical parts: decking, fittings, lining, washers, railings, casings, cladding and others.

Substitute, analogues

No data

Chemical composition of steel St0, % (GOST 380-71)

C	P, no more	S
0,23	0,07	0,06

Mechanical properties

GOST	Delivery status	Section, mm	σв, MPa	δ5, δ4, %
			no less
380-71	Hot rolled products	Up to 20 Over 20 Up to 40 Over 40	300	23 22 20
16523-70 (Transverse samples)	Hot rolled sheets Cold rolled sheets	Up to 2.0 incl. St. 2.0 to 3.9 incl. Up to 2.0 incl. St. 2.0 to 3.9 incl.	300	(11) (13) (14) (16)

At σв = 305 MPa, endurance limit σ-1 = 167 MPa

Technical characteristics of steel St0

Forging temperature, °C: beginning 1300, end 700. Weldability - weldable without restrictions; welding methods: RDS, ADS under submerged arc and gas shield, ESW and KTS. Machinability by cutting - in the hot-rolled state at HB 103-107 and σв = 460 MPa Kνb. st = 1.65 and Kνtv. spl = 2.1. Tendency to temper brittleness - not prone. Flock sensitivity - not sensitive.

Corrosion resistance

Wednesday	Test temperature, °C	Corrosion rate, mm/year
Sea water	20	0,105

Type of delivery

Long products, including shaped steel: GOST 380-71, GOST 2590-71, GOST 2591-71, GOST 19771-74, GOST 19772-74, GOST 8278-75, GOST 8281-80, GOST 8283-77, GOST 8509 -86, GOST 8910-86, GOST 8239-72, GOST 8240-72. Thick sheet GOST 19903-74.

Thin sheet GOST 19903-74. Tape GOST 503-81, GOST 6009-74. Strip GOST 103-76, GOST 82-70. Wire GOST 3282-74, GOST 17305-71.

enginiger.ru

Steel 3kp - decoding of steel grade, GOST, material characteristics

Steel grade - St3kp

Standard - GOST 380

Substitute - St3ps

Letters St

denote carbon steels of ordinary quality, number
3
- indicates the conventional number of the steel grade,
kp
- degree of deoxidation of steel (boiling).

Carbon steel of ordinary quality St3kp is used for minor and lightly loaded elements of welded and non-welded structures operating in the temperature range from -40 to 400°C.

Mass fraction of basic chemical elements, %
C - carbon	Mn - manganese	Si - silicon
0,14-0,22	0,30-0,60	No more than 0.05

Temperature of critical points, °C
Ac1	Ac3	Ar1	Ar3
735	850	680	835

Technological properties
Forging	Forging temperature, °C: beginning 1300, end 750. Cooling in air.
Weldability	Weldable without restrictions. Welding methods: manual arc welding, automatic arc welding, electroslag welding, resistance welding. For thicknesses greater than 36 mm, heating and mandatory subsequent heat treatment are recommended.
Machinability	In the hot-rolled state at HB 124 and σв = 400 MPa: Kv carbide = 1.8 Kv high-speed steel = 1.6
Flokensensibility.	Not sensitive
Tendency to temper brittleness	Not inclined

tekhnar.ru