20A
for the production of seamless hot gas pipes increased corrosion resistance and cold resistance
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Structural steel | Carbonaceous quality structural steel |
Chemical composition
| Standard | Si, % | Mn, % | Cr, % | Ni, % | P, % | C, % | S, % |
|---|---|---|---|---|---|---|---|
| GOST 21729 - 76 | 0.17–0.37 | 0.35–0.65 | < 0.25 | < 0.25 | < 0.035 | 0.17–0.24 | < 0.035 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | d5, % | Treatment |
|---|---|---|---|---|---|---|---|
| Trumpet | GOST 21729 - 76 | 392 | 22 |
Analogues
| Germany |
|---|
| 1.0307 (StE210.7) |
| 1.0319 (L210GA) |
Standards
| Standard | Description |
|---|---|
| GOST 21729 - 76 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Ni | % | Nickel |
| 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 |