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Steel 55S2GF

Designation

Name	The value
Designation GOST Cyrillic	55С2ГФ
Designation GOST Latin	55C2GF
Transliteration	55S2GF
By chemical elements	55С2MnV

Description

55S2GF steel is used: for the manufacture of springs critical purpose of the springs of the vehicles.

Note

Steel spring alloy quality.

Standards

Name	Code	Standards
Bars and shapes	В32	GOST 14959-79, TU 14-1-2118-77, TU 14-11-245-88, TU 14-136-367-2008
Steel wire medium and high carbon	В72	GOST 26366-84

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	V
GOST 14959-79	0.52-0.6	≤0.035	≤0.035	0.95-1.25	≤0.3	1.5-2	≤0.25	Rest	≤0.2	0.1-0.15

Fe is the basis.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %
Rolled steel. Steel categories: 3, 3A, 3B, 3C, 3D, 4, 4A, 4B. Quenching in oil from 870 °C to + vacation at 470 °C
	≥1375	≥1570	≥6	≥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
y	The relative narrowing