ATI 15-7 PH (Semi-Austenitic) vs ATI 412 Dual-Phase Stainless Steel
Property comparison of ATI 15-7 PH (Semi-Austenitic) and ATI 412 Dual-Phase Stainless Steel, both stainless steel.
| Property | ATI 15-7 PH (Semi-Austenitic) | ATI 412 Dual-Phase Stainless Steel | Difference |
|---|---|---|---|
| Yield strength | 380 MPa | 414 MPa | +9% |
| Tensile strength | 860 MPa | 565 MPa | -34% |
| Elongation | 30 % | 24 % | -20% |
| Density | 7,800 kg/m³ | 7,750 kg/m³ | -1% |
Difference is ATI 412 Dual-Phase Stainless Steel relative to ATI 15-7 PH (Semi-Austenitic). Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- grade
- UNS S15700
- standard
- AMS 5520
- heat treatment
- Condition A (Solution Annealed)
- grade
- UNS S41003
- standard
- ASTM A240
- heat treatment
- Sub-critical Anneal
About precipitation-hardening stainless steels
PH grades reach high strength through aging at intermediate temperatures while keeping the corrosion resistance of austenitic or martensitic grades. 17-4 PH and 15-5 PH are the common bar and forging stocks for aerospace and pump shafts. Mechanical properties depend strongly on the aging condition (H900, H1025, H1150).
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