40H9S2L
for parts operating under load for a long time at temperatures up to 700 degrees C (motor valves, fire bars, fasteners); martensitic steel grade
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, % | P, % | C, % | S, % |
|---|---|---|---|---|---|---|---|
| GOST 977-88 | 85.735–89.35 | 2–3 | 0.3–0.7 | 8–10 | < 0.035 | 0.35–0.5 | < 0.03 |
Information on suppliers
Technological Properties
| Weldability |
|---|
| Boundedly welded |
Heat Treatment Modes
| Treatment |
|---|
| Without heat treatment |
Analogues
| Germany | USA |
|---|---|
| G-X45CrSi9-3 | S65007 |
Standards
| Standard | Description |
|---|---|
| GOST 977-88 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
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 |