14H18N4G4L (10H18N4G4L)
Different Items (collectors of exhaust systems, furnace parts and fittings, etc.), operating at temperatures up to 400 ° C; austenitic steel — martensitic 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, % |
|---|---|---|---|---|---|---|---|---|
| GOST 977-88 | 68.795–75.8 | 0.2–1 | 4–5 | 16–20 | 4–5 | < 0.035 | < 0.14 | < 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Castings | GOST 977-88 | 441 | 245 | 25 | 35 | 981 | Hardening of 1020-1070 ° C, cooling water |
Heat Treatment Modes
| Treatment |
|---|
| Hardening 1020 - 1070 ° C, cooling in water |
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 |
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 |