20GSL
body parts of water turbines, operating at temperatures up to 450 degrees.
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Steels and alloys for castings | Ordinary steel for castings |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | P, % | C, % | S, % |
|---|---|---|---|---|---|---|
| GOST 977-88 | 97.62–98.24 | 0.6–0.8 | 1–1.3 | < 0.03 | 0.16–0.22 | < 0.03 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{P}$$, $$MPa$$ | $$\epsilon_L$$, % | $$\psi$$, % | $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ | Treatment |
|---|---|---|---|---|---|---|---|---|---|---|
| Heat treatment castings., К30 | GOST 977-88 | 540 | 294 | 18 | 30 | 294 | Normalized and tempered |
Heat Treatment Modes
| Treatment |
|---|
| Normalization 870 - 890 ° C, Vacation 570 - 600 ° C |
Analogues
| Germany | European Union | USA |
|---|---|---|
| 1.1133 | 1.1133 | 1022 |
| 1.1120 (GS-20Mn5) | 20Mn5 | 1518 |
| 1.1133 (20Mn5) | G10220 | |
| 1.1138 (G21Mn5) | G15180 | |
| G15220 | ||
| H15220 |
Standards
| Standard | Description |
|---|---|
| GOST 977-88 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
Description of mechanical properties
| Parameter | Units of measurement | Description |
|---|---|---|
| $$\sigma _{U}$$ | $$MPa$$ | Ultimate tensile strength |
| $$\sigma_{P}$$ | $$MPa$$ | Proportionality limit |
| $$\epsilon_L$$ | % | Elongation at break (longitudinal) |
| $$\psi$$ | % | Reduction in cross section on fracture |
| $$KCU\cdot 10^{3}$$ | $$\frac{J}{m^2}$$ | Impact toughness |