Bearing in mind that it is a precipitation hardened steel, it should be applied after supersaturation and aging. In the delivery condition +A, the products show no martensitic structure, resulting in significantly less corrosion resistance.
Stainless Steel Alloy 630 Chemical Composition
Grade | C | Mn | Si | P | S | Cr | Ni | Cu | Nb+Ta | |
630 | min. max | - 0.07 | - 1 | - 1 | - 0.04 | - 0.030 | 15 17.5 | 3 5 | 3 5 | 0.15 0.45 |
Alloy 17-4PH is provided in the solution-annealed condition (Condition A). Mechanical properties may be improved by subsequent age hardening treatments. These aging treatments are commonly described as conditions H900, H1025, H1075, H1150, H1150M and H1150D.
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