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

Steel St0

Content

• Purpose
• Type of delivery
• Chemical composition
• Critical point temperature
• Mechanical properties
• Technological properties Forging
• Weldability
• Machinability
• Rest

Corrosion resistance

Literature

Purpose

Purpose of steel St0: Minor non-calculated elements of welded and non-welded structures and non-critical parts: decking, fittings, linings, washers, railings, casings, cladding, etc.

Type of delivery

Steel St0 is supplied as:

• Long products according to GOST 535-2005
• Sheet according to GOST 14637-89

Chemical composition

Table 1 - Mass fraction of steel elements St0, %, according to GOST 380-2005

C	Si	Mn	S	P	Cr	Ni	Cu	As	N
≤0,23	—	—	≤0,06	≤0,07	≤0,30	≤0,30	≤0,30	≤0,08	≤0,01

Critical point temperature

Table 2 - Temperature of critical points of steel St0, °C

Ac1	Ac3	Ar1	Ar3
735	854	682	835

Mechanical properties

Table 3 - Mechanical properties of St0 steel at room temperature

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)

Table 4 — Fatigue limit of steel St0

Fatigue limit of steel St0, N/mm2		Steel condition
σ-1	τ-1
167	—	At σв = 305 N/mm2

Technological properties

Forging

Table 5 - Forging steel St0

Type of semi-finished product	Forging temperature range, °C
	Start	end
Ingot	1280	750
Blank	1300	700

Weldability

St0 steel can be welded without restrictions.

Methods for welding steel St0:

• 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

Machinability

Steel St0 is processed by cutting in the hot-rolled state at HB 103-107 and σв = 460 MPa. Kv = 2.10 (carbide) Kv = 1.65 (high speed steel)

Rest

The tendency of St0 steel to temper brittleness is not.

Flake sensitivity is not sensitive.

Corrosion resistance

Table 6 - Corrosion resistance of steel St0

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

Literature

1. Brand of steels and alloys / A.S. Zubchenko, M.M. Koloskov, Yu.V. Kashirsky and others. Under the general editorship. A.S. Zubchenko - M.: Mechanical Engineering, 2003. 784 p.
2. Brand of steels and alloys / M.M. Koloskov, E.T. Dolbenko, Yu.V. Kashirsky and others. Under the general editorship. A.S. Zubchenko - M.: Mechanical Engineering, 2001. 672 p.
3. Brand of steels and alloys / V.G. Sorokin, A.V. Volosnikova, S.A. Vyatkin and others; Under general ed. V.G. Sorokina. - M.: Mechanical Engineering, 1989. - 640 p.
4. GOST 380-2005 Carbon steel of ordinary quality. Stamps
5. GOST 14637-89 Rolled thick sheets of carbon steel of ordinary quality. Specifications

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

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

Characteristics of steel St0

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Metex → Catalog → Brand of steels and cast irons → Structural carbon steel of ordinary quality → Characteristics of steel St0 Structural carbon steel of ordinary quality Mechanical properties: Read also:  How to properly connect steel pipes with flanges? 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 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 Structural carbon steel of ordinary quality Material characteristics 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. Chemical composition in % of the material St0. C S P up to 0.23 up to 0.06 up to 0.07 Mechanical properties at T=20oC of the material St0. Assortment Size Eg. sв sT d5 y KCU Thermal change — mm — MPa MPa % % kJ/m2 — Rolled hot rolled products. up to 20 300 23 Rolled hot rolled products. 20-40 300 22 Technological properties of material St0. Weldability: no limits. Flock Sensitivity: not sensitive. Tendency to temper brittleness: not inclined. 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 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 A500S fittings . Sale and supply of fittings , price list Armature A400 (f6-40) - price in region - Severstal, NSMMZ, MMK, ZSMK, Armature A3 , A500S (f6-40) - transit supplies of fittings from the manufacturing plant. Factory prices ! Any directions!	ORDER rolled metal: by phone (383) 286-58-95 by email [email protected] To buy rolled metal, you can also fill out an online application. Security Service Login Password metal calculator pipe calculator CALCULATION OF RAILWAY TARIFF
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