12Г2АФ steel is used: for the production of hot rolled sheet metal for the manufacture of metal in the construction of industrial buildings; structures and body parts General engineering; RAM trucks.

Note

Steel low alloy manganese vanadium with nitrogen. The degree of deoxidation — SP.

Standards

Name	Code	Standards
Sheets and strips	В33	TU 14-1-2177-77, TU 14-1-3227-81
Sheets and strips	В23	TU 14-1-2445-78, TU 14-1-4632-93

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	N	Al	V
TU 14-1-2177-77	0.11-0.16	≤0.04	≤0.04	1.1-1.5	≤0.35	≤0.15	-	Rest	-	-	0.08-0.15
TU 14-1-3227-81	0.11-0.16	≤0.04	≤0.04	1.1-1.5	≤0.35	≤0.15	≤0.3	Rest	≤0.02	≤0.02	0.08-0.15

Fe is the basis.
According to TU 14-1-3227-81, deviations in chemical composition are allowed: for manganese + 0.030%, for chromium + 0.020%, for vanadium + 0.020%. The aluminum content is indicated as residual.

Mechanical properties

Section, mm	σ_U, MPa	d₁₀	HB, MPa
Sheets hot rolled normalizemime in the state of delivery on the other 14-1-3227-81 (in the delivery condition specified by the category of quality of hire)
6.0; 6.35	470-608	≥18	≤170
6.0; 6.35	470-627	≥18	≤175

Description mechanical marks

Name	Description
σ_U	Limit short-term strength
d₁₀	Elongation after rupture
HB	Brinell hardness number

Technological properties

Name	The value
Particularities of production of goods	The leaves on the other 14-1-3227-81 are delivered normalized and etched Leaves in the delivery condition shall be tested in bending by 180° on the transverse samples with the thickness of the mandrel equal to the thickness of the sheet. The bending point should be no cracks, tears and bundles.

Steel 12Г2АФ

Designation

Description