18G2AF steel is used: for the production of welded structures for various purposes, for load-bearing elements of welded structures operating at variable loads at temperatures up to -60 °C.

Note

Steel low alloy manganese vanadium with nitrogen. The degree of deoxidation — PS.
Steel 18Г2АФпс provides strength grade sheet, universal broadband rental and roll-formed profiles of the CP 440 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 19903-74, GOST 19282-73, GOST 19903-90, TU 14-1-4632-93
Bars and shapes	В22	GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 9234-74, GOST 11474-76, TU 14-1-1762-76
Welding and cutting metals. Soldering, riveting	В05	OST 36-58-81
Sheets and strips	В33	TU 14-1-4431-88
Bars and shapes	В32	TU 14-136-367-2008

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	N	As	Al	V	Ti
TU 14-1-1762-76	0.14-0.22	≤0.04	≤0.035	1.3-1.7	≤0.3	0.4-0.7	≤0.3	Rest	≤0.3	0.015-0.03	-	-	0.08-0.18	-
GOST 19282-73	0.14-0.22	≤0.04	≤0.035	1.3-1.7	≤0.3	≤0.17	≤0.3	Rest	≤0.3	0.015-0.03	≤0.08	≤0.05	0.08-0.15	≤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%.
According to TU 14-1-1762-76 chemical analysis of steel grade 86G2AF is presented.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	d₄
Steel hot-rolled sheet in the delivery condition
≤4	≥450	≥600	-	≥19
Normalization at 920-950 °C
12	≥500	≥650	≥24	-
Leaves. Quenching from 940 °C to + Vacation at 650 °C
20	≥540	≥660	≥18	-
Normalization at 920-950 °C
20	≥455	≥610	≥26	-
The plates and universal broadband in the state of delivery GOST 19282-73
5-50	≥440	≥590	≥19	-
Normalization at 920-950 °C
8	≥530	≥670	≥26	-
Steel hot rolled as supplied on the other 14-1-1762-76
6-9	≤440	≤686	≥20	-
Channel and beam No. 11-13. Normalization at 920-950 °C
-	≥455	≥580	≥25	-

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
d₄	Elongation after rupture

Technological properties

Name	The value
Weldability	without restrictions

Steel 18G2AF (18Г2АФпс)

Designation

Description