20FA (20F)
For the manufacture of cold-resistant and corrosion-resistant seamless tubes for low pressure pipeline
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Structural steel | Alloyed structural steel |
Chemical composition
| Standard | Si, % | Mn, % | Cr, % | Cu, % | Ni, % | V, % | Al, % | P, % | C, % | S, % |
|---|---|---|---|---|---|---|---|---|---|---|
| TU 14-158-114-99 | 0.17–0.37 | 0.6–0.75 | < 0.4 | < 0.25 | < 0.25 | 0.02–0.05 | 0.03–0.05 | < 0.015 | 0.18–0.23 | < 0.02 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{Y}$$, $$MPa$$ | d5, % | Treatment |
|---|---|---|---|---|---|---|---|---|
| Pipes are hot deformed. | TU 14-158-114-99 | 502–627 | 338–470 | 25 |
Standards
| Standard | Description |
|---|---|
| TU 14-158-114-99 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Cu | % | Copper |
| Ni | % | Nickel |
| V | % | Vanadium |
| Al | % | Aluminium |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
Description of mechanical properties
| Parameter | Units of measurement | Description |
|---|---|---|
| d5 | % | Elongation at break |
| $$\sigma_{Y}$$ | $$MPa$$ | Yield strength |
| $$\sigma _{U}$$ | $$MPa$$ | Ultimate tensile strength |