17-4PH stainless steel
Introduction to the Material: The 17-4PH stainless steel (SUS 630) produced via MIM technology is a precipitation-hardening stainless steel. It offers a good combination of mechanical properties, corrosion resistance, and excellent polishability. As one of the most widely used materials in the MIM industry, it is extensively applied in consumer electronics, medical devices, connectors, and other sectors.
Element composition:
|
C |
Cr |
Ni |
Cu |
Mo |
Nb |
Si |
Mn |
Fe |
|
≤0.07 |
15~17.5 |
3~5 |
3~5 |
0.15~0.25 |
0.15~0.45 |
≤1 |
≤1 |
Bal. |
Physical properties:
|
Properties |
Unit |
After sintered |
After heat treatment |
|
Density ρ |
g/cm3 |
>7.60 |
>7.60 |
|
Hardness HV |
kgf/mm² |
285 |
400 |
|
Tensile strength Rm |
MPa |
900 |
≥1200 |
|
Yield strength Rp0.2 |
MPa |
675 |
≥1100 |
|
Elongation A10 |
% |
5 |
8 |
Metallography（×500）
Left: As-sintered; Right: Heat-treated
