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Steel 50KHG

Designation

Name	The value
Designation GOST Cyrillic	50ХГ
Designation GOST Latin	50XG
Transliteration	50HG
By chemical elements	50CrMn

Description

50KHG steel is used: for the production of automobile and tractor carriage springs, springs of rolling stock of railway transport.

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 14-1-1271-75, 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
GOST 14959-79	0.46-0.54	≤0.035	≤0.035	0.7-1	0.9-1.2	0.17-0.37	≤0.25	Rest	≤0.2

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 850 °C + Vacation at 470 °C
	≥1175	≥1270	≥7	≥35

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

Technological properties

Name	The value
Weldability	does not apply to welded structures
Склонность к отпускной хрупкости	tend not
Flock-sensitive sensitivity	not sensitive