This group of iron-chromium-nickel alloys has a corrosion resistance approaching that of the austenitic types and can be heat treated to high strength levels -approaching that of the hardenable martensitic types- through a special heat-treating cycle.
Type 17-4 PH is normally supplied from the mill in the solution-heat-treated condition (Condition A) when fabrication calls for machining, welding, or cold forming prior to hardening.
The precipitation-hardening types are magnetic in the hardened condition.
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