30HGSFL
gear, gears, and other parts of mechanical engineering.
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Steels and alloys for castings | Ordinary steel for castings |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | V, % | P, % | C, % | S, % |
|---|---|---|---|---|---|---|---|---|
| GOST 977-88 | 96.83–97.99 | 0.4–0.6 | 1–1.5 | 0.3–0.5 | 0.06–0.12 | < 0.05 | 0.25–0.35 | < 0.05 |
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 | 392 | 15 | 25 | 343 | Normalization of 900-930 ° C, 600-650 ° C and Holidays | ||
| Castings | GOST 977-88 | 785 | 589 | 14 | 25 | 441 | Tempering 900-920 ° C, 630-670 ° C and Holidays |
Heat Treatment Modes
| Treatment |
|---|
| Normalization 900 - 930 ° C, Vacation 600 - 650 ° C |
| Tempering 900 - 920 ° C, Vacation 630 - 670 ° C |
Standards
| Standard | Description |
|---|---|
| GOST 977-88 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| V | % | Vanadium |
| 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 |