30GSL
gears, rollers, cage, ring gears, levers, flanges, pulleys, sector, columns, running wheels and other parts.
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 | 97.37–98.05 | 0.6–0.8 | 1.1–1.4 | < 0.04 | 0.25–0.35 | < 0.04 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Castings | GOST 977-88 | < 100 | 589 | 343 | 14 | 25 | 294 | Normalization of 870-890 ° C, 570-600 ° C and Holidays | ||
| Castings | GOST 977-88 | 638 | 392 | 14 | 30 | 491 | Tempering 920-950 ° C, 570-650 ° C and Holidays |
Brinell hardness number
Casting and technological parameters
| linear shrinkage, % |
|---|
| 2.2–2.3 |
Technological Properties
| Weldability | Flake Susceptibility | Propensity to temper brittleness |
|---|---|---|
| Difficult to weld | not sensitive | not inclined |
Heat Treatment Modes
| Treatment |
|---|
| Normalization 870 - 890 ° C, Vacation 570 - 600 ° C |
| Hardening 920 - 950 ° C, Vacation 570 - 650 ° C |
Analogues
| USA | Germany |
|---|---|
| H13300 | 1.1173 (30Mn5) |
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 |
Description of the casting and technological parameters
| Parameter | Units of measurement | Description |
|---|---|---|
| linear shrinkage | % | The difference between model dimensions and the model casting |
Designation of types of weldability
| Parameter | Units of measurement | Description |
|---|---|---|
| no limits | Welding is performed without heating and without subsequent heat treatment | |
| Boundedly welded | Welding is possible with heating up to 100–120 °C and subsequent heat treatment | |
| Difficult to weld | For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing | |
| Not applicable for welded structures |