Steel 76C (М76Ц)

Designation

Name	The value
Designation GOST Cyrillic	76Ц
Designation GOST Latin	76Ts
Transliteration	76Ts
By chemical elements	76Zn

Name	The value
Designation GOST Cyrillic	М76Ц
Designation GOST Latin	M76Ts
Transliteration	M76Ts
By chemical elements	Mo76Zn

Description

76C steel is used: for the manufacture of railway rails R65 and R75 types; types of rails RP50, RP65 and РП75 broad gauge for the tracks of industrial railway transport for railway tracks and turnouts of industrial enterprises.

Note

М76Ц — steel open-hearth rail with Zirconia.

Standards

Name	Code	Standards
Rails. Lining. Lining. Crutches	В42	GOST 8161-75, GOST 16210-77, GOST 18267-82, GOST 24182-80, GOST Р 51045-97

Chemical composition

Standard	C	S	P	Mn	Si	Fe	Zr
GOST 24182-80	0.71-0.82	≤0.045	≤0.035	0.75-1.05	0.18-0.4	Rest	0.001-0.05
GOST Р 51045-97	0.71-0.84	≤0.045	≤0.035	0.75-1.25	0.18-0.55	Rest	0.001-0.01

Fe is the basis.
According to GOST 24182-80, the zirconium content in the range from 0.001% to 0.01% in steel is determined from the calculation of its input of not less than 80 grams per ton of liquid steel.
In rails made of Kerch ores, the content of phosphorus is not more than 0.040%, sulfur is not more than 0.050%, arsenic is not more than 0.15%.
The rails of group I must be made of calm open-hearth steel, deoxidized in the ladle by complex deoxidizers without the use of aluminum or other deoxidizers, which form harmful non-metallic inclusions in steel.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²	HB, MPa
Mechanical properties of steel for rails type R65 and R75 GOST 24182-80 on delivery
	-	≥900	≥4	-	-	-
Rails type R65 and R75 GOST 18267-82. Bulk quenching in oil + Furnace vacation
	≥794	≥1176	≥6	≥25	≥245	341-388
Types of rails RP50, RP65 and РП75 according to GOST R 51045-97 on delivery
	-	≥780	≥3	-	-	-
	-	≥1080	≥5	-	≥147	311-420

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
KCU	Toughness
HB	Brinell hardness number