Steel 15G2SF used: for the manufacture of welded steel structures; as a base layer in the production of two-layer corrosion-resistant sheet metal.

Note

Low alloy steel manganese-vanadium. The degree of deoxidation — SP.
Steel 15G2SF provides strength class long products, strip and shaped rolled KP 390 with a thickness up to 20 mm.
Steel 15G2SF provides strength grade sheet, universal broadband rental and roll-formed profiles KP 390 with plate thickness of 32 mm. without the use of additional hardening treatment.

Standards

Name	Code	Standards
Classification, nomenclature and General rules	В20	GOST 19281-89
Steel pipes and fittings to them	В62	GOST 20295-85, GOST 24950-81
Sheets and strips	В23	GOST 82-70, GOST 19282-73, TU 14-1-4502-88
Bars and shapes	В22	GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 9234-74, GOST 11474-76
Welding and cutting metals. Soldering, riveting	В05	OST 36-58-81
Sheets and strips	В33	TU 14-1-4688-89, TU 14-1-5241-93, TU 05764417-028-94, TU 14-1-4212-87, TU 14-1-4431-88
Bars and shapes	В32	TU 14-136-367-2008
Blanks. Of the workpiece. Slabs	В31	TU 14-229-289-90

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	N	As	Al	V	Ti
GOST 19282-73	0.12-0.18	≤0.04	≤0.035	1.3-1.7	≤0.3	0.4-0.7	≤0.3	Rest	≤0.3	≤0.008	≤0.08	≤0.05	0.05-0.1	≤0.03

Fe is the basis.
According to GOST 19282-73, it is allowed to modify steel with calcium and rare-earth elements from the calculation of the introduction of not more than 0.02% calcium and 0.05% rare-earth elements into the metal.
According to GOST 19281-89 and GOST 19282-73, it is allowed to add aluminum and titanium from the calculation of the mass fraction in the rolled aluminum - no more than 0.050%, titanium - no more than 0.030%.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %
Without heat treatment - as supplied
10-20	≥400	≥560	≥18
5-9	-	≥560	≥18
Rolled plates as supplied by TU 14-1-5241-93. Quenching + Tempering (samples transverse)
8-50	≥390	≥510	≥19
Bars and shapes of high-strength steel in the delivery state according to the GOST 19281-89 (specified strength class)
≤20	≥390	≥530	≥18
Plate and universal broadband rental in the state of delivery GOST 19282-73
5-32	≥390	≥550	≥18
Plate and universal broadband rental in the state of delivery GOST 19282-73. Hardening + Vacation
10-32	≥440	≥590	≥17

Description mechanical marks

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

Technological properties

Name	The value
Weldability	Without restrictions.

Steel 15G2SF

Designation

Description