Precipitation hardening alloys of the 17-4 PH and 15-5 PH types achieve their strength by dissolving precipitates by solution annealing. An aging cycle then creates precipitates that strengthen the steel. They are usually characterized by extremely good corrosion resistance.
| Alloy | BÖHLER brand | WstNo. | UNS | ISO | AMS | ASTM | Others |
| 17-4 PH | N700 | 1.4542, 1.4548 | S17400 | X5CrNiCuNb16-4 | 5622, 5643 | A564, F899 | AISI: 630 |
| 15-5 PH | N701 | 1.4545 | S15500 | X5CrNiCu15-5 | 5659 | – | AISI: XM 12 |
| 13-8 Mo | N709 | 1.4534 | – | X3CrNiMoAl13-8-2 | 5629 | A564 | – |
| Alloy 455 | N713 | 1.4543 | S45500 | X3CrNiCuTiNb12-9 | Alloy 455, XM16 | ||
| Maraging 300 | V300 | 1.6354, ~1.2709 | K93160 | X2NiCoMo18-9-5 | 6514 | ||
| Maraging 250 | V250 | 1.6359, ~1.2706 | K92890 | X2NiCoMo18-8-5 | 6512 | ||
| Maraging 350 | V350 | 1.6356 | X2NiCoMoTi18-12 | 6515 | |||
| Alloy 465 | N765 | 1.4614 Custom 465 | S46500 | X1CrNiTiMo11-11, X2CrNiTi12-11 | 5936 | A564, F899 | |
| A286 | T200 | 1.4943, 1.4944, 1.4980, 1.2779, 1.3980 | S66286 | X4NiCrTi25-15, X5NiCrTi26-15 | 5731, 5732 | A660 | AISI: 660 |
| Alloy 718 (API) | L718API | 2.4668 | N07718 | NiCr19NbMo/NiCr19Fe19Nb5Mo2 | – | – | Nace MR0175 (150ksi) |
| Alloy 718 (AMS) | L718 AMS | 2.4668 | N07718 | NiCr19NbMo/NiCr19Fe19Nb5Mo3 | 5662, 5663 | B637 | – |