Steel 63 (К63)

Designation

Name	The value
Designation GOST Cyrillic	63
Designation GOST Latin	63
Transliteration	63
By chemical elements	63

Name	The value
Designation GOST Cyrillic	К63
Designation GOST Latin	K63
Transliteration	K63
By chemical elements	Co63

Description

63 steel is used: for the manufacture of crane rails of special types of profiles KR70, KR80, KR100, KR120, KR140, used to the ways of cranes.

Note

К63 — steel rail of the Converter.

Standards

Name	Code	Standards
Bars and shapes	В22	GOST 4121-96

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	N	As
GOST 4121-96	0.53-0.73	≤0.05	≤0.05	0.6-1	≤0.3	0.15-0.35	≤0.3	Rest	≤0.3	≤0.008	≤0.08

Fe is the basis.
In accordance with GOST 4121-96, according to the manufacturer's agreement with the consumer, the carbon mass fraction should be in the range of 0.54-0.72%, the mass fraction of sulfur and phosphorus should not exceed 0.045% of each element.

Mechanical properties

s_T\|s_0,2, MPa	σ_U, MPa	d	HB, MPa
Rails special profiles types KR70, KR80, KR100, KR120, KR140 (specified hardness of HB surface of rail head)
≥370	≥730	≥6	≥212

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
d	Elongation after rupture
HB	Brinell hardness number