Stainless Grade
17-4 PH
Precipitation-hardening stainless: very high strength with good corrosion resistance. Aerospace and high-performance parts.
Last verified: 2026-07-09
| TypeMetallurgical family — determines magnetism and how it's strengthened. | Precipitation-hardening |
|---|---|
| ConditionThe condition these typical values apply to. | H900 |
| Density(g/cm³) | 7.8 |
| Tensile(MPa)Typical ultimate tensile strength. | 1070 |
| Yield(MPa)Typical 0.2% offset yield strength. | 1000 |
| Elong.(%)Typical elongation at break. | 10 |
| HardnessTypical hardness (annealed unless noted). | ~40 HRC |
| Machinability | Fair |
| Magnetic | Yes |
- Typical uses: aerospace fittings, pump and valve shafts, high-strength corrosion-resistant components.
- Hardened by a simple low-temperature aging treatment (e.g. H900) with minimal distortion.
Other stainless steel grades
Sources
- AISI / ASM International — typical properties of stainless steels
- Manufacturer datasheets (annealed condition; 17-4 PH in H900)