14Cr17Ni2
Stainless Steel14Cr17Ni2
High Cr-Ni martensitic, strength & toughness. (GB/T 20878; equiv ASTM 431 / EN 1.4057 / JIS SUS431). Nominal values—confirm mill certificate.
Chemical Composition (%)
| C | 0.2 |
|---|---|
| CR | 15 |
| NI | 1.25 |
Mechanical Properties
Tensile:≥850 MPa;Yield:≥635 MPa
Chinese Standard
T 20878 14Cr17Ni2
Equivalent Standards
ASTM 431
Applications
高铬镍马氏体，强韧。,Bar
Available Forms
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.
Uses
Annealing/quench from 980–1050 °C (oil or air) then temper 150–650 °C; lower temper gives higher hardness, higher temper improves toughness.
Heat Treatment
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.
Precautions
EN 1.4057 / JIS SUS431
Comments 0