M73T (Steel 73T)
For the manufacture of rails Ostryakova types OR75, OR65, OR50, applied to the upper structure of railway track structures
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Steels for special purposes | Steel for rail transport |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Ti, % | P, % | C, % | S, % |
|---|---|---|---|---|---|---|---|
| GOST 9960 - 85 | 97.63–98.393 | 0.18–0.45 | 0.75–1.05 | 0.007–0.015 | < 0.035 | 0.67–0.78 | < 0.04 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | d5, % | Treatment |
|---|---|---|---|---|---|---|---|
| Steel | GOST 9960 - 85 | 900 | 5 |
Standards
| Standard | Description |
|---|---|
| GOST 9960 - 85 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Ti | % | Titan |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
Description of mechanical properties
| Parameter | Units of measurement | Description |
|---|---|---|
| d5 | % | Elongation at break |
| $$\sigma _{U}$$ | $$MPa$$ | Ultimate tensile strength |