1.4742
Stainless Steel1.4742
Highest-Cr ferritic, high-temp oxidation resistant. (EN 10088; equiv ASTM 446 / EN 1.4762). Nominal values—confirm mill certificate.
Chemical Composition (%)
| C | 0.2 |
|---|---|
| CR | 23 |
| N | 0.25 |
Mechanical Properties
Tensile:≥480 MPa;Yield:≥275 MPa
Chinese Standard
EN 10088 1.4742
Equivalent Standards
ASTM 446
Equivalent Grades
EN 1.4762
Applications
最高铬铁素体，耐高温氧化。,"Sheet
Available Forms
Bar"
Uses
Martensitic stainless steel combining moderate corrosion resistance with high strength and hardness after heat treatment. Used for cutlery, surgical instruments, turbine blades, valves, pumps, fasteners and bearings in mildly corrosive environments.
Heat Treatment
Annealing/quench from 980–1050 °C (oil or air) then temper 150–650 °C; lower temper gives higher hardness, higher temper improves toughness.
Precautions
Preheat and post-weld heat treat to avoid hydrogen cracking; soft anneal before heavy machining. Lower corrosion resistance than austenitic grades — not for strong chlorides.
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