1.7868
High-Temp Steel1.7868
DIN special steel grade 1.7868.
Chemical Composition (%)
| C | 0.05 |
|---|---|
| SI | 1.5 |
| MN | 2 |
| CR | 15 |
| NI | 10 |
| MO | 4 |
| N | 0.2 |
| P | 0.03 |
| S | 0.02 |
Mechanical Properties
Tensile:≥500 MPa;Yield:≥300 MPa;Elongation:≥18%
Equivalent Grades
DIN 1.7868
Applications
General engineering / special service
Available Forms
Bar,Plate
Uses
Heat- and creep-resistant steel for elevated-temperature service with stable strength and oxidation resistance. Used in furnace parts, exhaust manifolds, turbine components, boiler tubes and engine valves.
Heat Treatment
Normally used in the solution-annealed or precipitation-hardened condition; stabilise/age per the grade (e.g., 650–800 °C ageing). Avoid long exposure in the sigma/475 °C embrittlement ranges.
Precautions
Maintain the recommended heat-treatment envelope; prolonged time in embrittlement ranges reduces ductility. Use descaling/protective atmosphere to limit scaling.
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