Steel medium-carbon alloyed 35X18H24S2L (30H18N24С2L)
- Chemical sotav
| Fe | Iron | Rest |
| Si | Silicon | 2.0 — 3.0 |
| Mn | Manganese | <1.5 |
| Ni | Nickel | 23.0 — 25.0 |
| S | Sulfur | <0.03 |
| C | Carbon | 0.3 — 0.4 |
| P | Phosphorus | <0.035 |
| Cr | Chromium | 17.0 — 20.0 |
for parts operating at high temperatures in a heavily loaded state (furnace conveyors, screws, fasteners); austenitic steel. Production in Russia is conducted according to the technical requirements of GOST 4543−81 and GOST 977−87
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 | 49.735–57.7 | 2–3 | < 1.5 | 17–20 | 23–25 | < 0.035 | 0.3–0.4 | < 0.03 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{P}$$, $$MPa$$ | $$\epsilon_L$$, % | $$\psi$$, % | Treatment |
|---|---|---|---|---|---|---|---|---|---|
| Castings | GOST 977-88 | 549 | 294 | 20 | 25 | Hardening 1150 ° C, Cooling water |
Heat Treatment Modes
| Treatment |
|---|
| Quenching 1140 - 1160 ° 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 |