Steel M75
Designation
| Name |
The value |
| Designation GOST Cyrillic |
М75 |
| Designation GOST Latin |
M75 |
| Transliteration |
M75 |
| The chemical elements |
Mo75 |
Description
M75 steel is used: for the production of grooved tram rails of types Тв60 Тв65 and high quality.
Standards
| Name |
Code |
Standards |
| Rails. Lining. Lining. Crutches |
В42 |
TU 14-2-751-87 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Si |
Fe |
| TU 14-2-751-87 |
0.67-0.8 |
≤0.04 |
≤0.04 |
0.7-1 |
0.13-0.28 |
The rest |
Fe is the basis.
According to TU 14-2-751-87 the chemical composition for steel M75 is given. In the mark designation the letter "M" indicates the method of steel smelting (open-hearth), and the figures - the average carbon content in hundredths of a percent.
Mechanical characteristics
| Section, mm |
σB, MPa |
| Tram rails grooved high-quality on the other 14-2-751-87 |
|
≥820 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| σB |
Limit short-term strength |
Technological properties
| Name |
The value |
| Macrostructure and contamination |
The macrostructure of the rails is guaranteed by the manufacturer. Not permitted residue shrinkage and delamination. |
