17-4PH (UNS S17400) is an Age Hardened Martensitic Stainless Steel with excellent machinability and good corrosion resistance. The material can be hardened to different strength levels to accommodate the specified requirements of the designed component. vSM stocks multiple conditions of 17-4 bar including the H1150M and DH 1150 for NACE service.
| Carbon(C) | Manganese(Mn) | Phosphorus(P) | Sulfur(S) | Silicon(Si) | Nickel(Ni) | Cobalt(Co) |
| 0.07 Max | 1.00 Max | 0.040 Max | 0.030 Max | 1.00 Max | 3.0-5.0 | – |
| Chromium(Cr) | Molybdenum(Mo) | Niobium + Tantalum(Nb (Cb) + Ta) | Titanium(Ti) | Copper(Cu) | Aluminum(Al) | Iron (Fe) & Others |
| 15.0-17.5 | – | 0.15-0.45 Max | – | 3.00-5.00 | – | Fe– Balance |