Steel St3gsp (ВСт3Гсп)

Designation

Name	The value
Name	The value
Designation GOST Cyrillic	Ст3Гсп
Designation GOST Latin	Ct3Gcp
Transliteration	St3Gsp
By chemical elements	3Mn

Name	The value
Name	The value
Designation GOST Cyrillic	ВСт3Гсп
Designation GOST Latin	BCt3Gcp
Transliteration	VSt3Gsp
By chemical elements	3Mn

Description

Steel St3gsp usedfor producing h-beam, channels, angle steel, used in the manufacture of load-bearing elements of welded structures operating at variable loads at temperatures from -20 °C to +425 °C; the two-headed rails, t-type P5, is designed for ground and suspended tracks; steel moulded profile for mining equipment.

Note

The degree of deoxidation — SP.

Standards

Name	Code	Standards
Name	Code	Standards
Steel pipes and fittings to them	В62	GOST 3262-75, GOST 20295-85, GOST 24950-81, TU 14-3-1160-83, TU 14-3-1428-86, TU 14-159-339-2009
Tape	В24	GOST 3560-73, STP М309-74
Classification, nomenclature and General rules	В20	GOST 380-2005
Bars and shapes	В22	GOST 5422-73, GOST 5781-82, GOST 8239-89, GOST 8240-97, GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 8509-93, GOST 8510-86, GOST 9234-74, GOST 11474-76, GOST 19240-73, GOST 19425-74, GOST 535-2005, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006, OST 5.9086-85, OST 5.9087-84
Sheets and strips	В23	GOST 82-70, GOST 14637-89, GOST 14918-80, GOST 103-2006
Blanks. Of the workpiece. Slabs	В31	OST 3-1686-90, TU 14-1-4944-90
Sheets and strips	В33	TU 14-1-4431-88
Bars and shapes	В32	TU 14-2-849-89, TU 14-11-245-88, TU 14-136-367-2008

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	N	As
Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	N	As
GOST 380-2005	0.14-0.2	≤0.05	≤0.04	0.8-1.1	≤0.3	0.15-0.3	≤0.3	Rest	≤0.3	≤0.012	≤0.08

Fe is the basis.
The nitrogen content is indicated for steel smelted in electric furnaces. In open-hearth and converter steels, the content of N≤0.010%.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	KCU, kJ/m²
Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	KCU, kJ/m²
The hot rolled shapes in the state of delivery
20-40	≥245	390-570	≥24	≥880
Hot-rolled plate in the delivery condition
≤20	≥255	390-570	≥23	-
20-40	≥245	390-570	≥24	-
Sheet as supplied. Without heat treatment
4-20	≥255	390-570	≥23	-

Description mechanical marks

Name	Description
Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
KCU	Toughness