A4
for the production of rolled and forged blanks of square or circular cross-section designed for the production of axles of locomotives, electric trains, diesel and electric trains, cars and railway carriages underground railways.
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Steels for special purposes | Steel for rail transport |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Cu, % | V, % | P, % | C, % | S, % | Mo, % |
|---|---|---|---|---|---|---|---|---|---|---|
| GOST 31334 - 2007 | > 96.27 | < 0.5 | < 0.8 | < 1.2 | < 0.3 | < 0.1 | < 0.04 | < 0.4 | < 0.04 | < 0.35 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{Y}$$, $$MPa$$ | d5, % | Treatment |
|---|---|---|---|---|---|---|---|---|
| Axis | GOST 31334 - 2007 | 650–800 | 420 | 19 | Normalization |
Standards
| Standard | Description |
|---|---|
| GOST 31334 - 2007 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Cu | % | Copper |
| V | % | Vanadium |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
| Mo | % | Molybdenum |
Description of mechanical properties
| Parameter | Units of measurement | Description |
|---|---|---|
| d5 | % | Elongation at break |
| $$\sigma_{Y}$$ | $$MPa$$ | Yield strength |
| $$\sigma _{U}$$ | $$MPa$$ | Ultimate tensile strength |