Steel 76ВТ (М76ВТ)

Designation

Name The value
Designation GOST Cyrillic 76ВТ
Designation GOST Latin 76BT
Transliteration 76VT
By chemical elements 76WTi
Name The value
Designation GOST Cyrillic М76ВТ
Designation GOST Latin M76BT
Transliteration M76VT
By chemical elements Mo76WTi

Description

76ВТ steel is used: for the manufacture of railway rails R65 and R75 types.

Note

М76ВТ — steel open-hearth rail with titanium and vanadium.

Standards

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

Chemical composition

Standard C S P Mn Si Fe V Ti
GOST 24182-80 0.71-0.82 ≤0.045 ≤0.035 0.75-1.05 0.18-0.4 Rest 0.01-0.02 0.005-0.025
Fe is the basis.
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 sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2 HB, MPa
The mechanical properties of rails type R65 and R75 GOST 18267-82. Bulk quenching in oil + Furnace vacation
≥794 ≥1176 ≥6 ≥25 ≥245 341-388
Mechanical properties of steel for rails type R65 and R75 GOST 24182-80 on delivery
- ≥900 ≥4 - - -

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σU Limit short-term strength
d5 Elongation after rupture
y The relative narrowing
KCU Toughness
HB Brinell hardness number