12H21N5G2SAL
for producing castings for various industrial applications. Steel austenitic-ferritic class.
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Steels and alloys for castings | Steel for casting with special properties |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Ni, % | P, % | C, % | S, % | N, % |
|---|---|---|---|---|---|---|---|---|---|
| GOST 977-88 | 68.1–75.9 | < 1.5 | < 2 | 20–22 | 4–6 | < 0.04 | < 0.12 | < 0.04 | 0.1–0.2 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{Y}$$, $$MPa$$ | $$\psi$$, % | $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ | d5, % | Treatment |
|---|---|---|---|---|---|---|---|---|---|---|
| Castings | GOST 977-88 | 657 | 334 | 20 | 245 | 18 |
Standards
| Standard | Description |
|---|---|
| GOST 977-88 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Ni | % | Nickel |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
| N | % | Nitrogen |
Description of mechanical properties
| Parameter | Units of measurement | Description |
|---|---|---|
| d5 | % | Elongation at break |
| $$\sigma_{Y}$$ | $$MPa$$ | Yield strength |
| $$\sigma _{U}$$ | $$MPa$$ | Ultimate tensile strength |
| $$\psi$$ | % | Reduction in cross section on fracture |
| $$KCU\cdot 10^{3}$$ | $$\frac{J}{m^2}$$ | Impact toughness |