Principal Design Features
A general purpose structural engineering material for use at high temperatures where strength, stability, and durability are important. The alloy also has very good corrosion resistance. When considering this alloy, also investigate Alloy 690, which doubles the chromium content, to improve stress corrosion cracking capabilities.
Heaters, heat exchangers, chemical process equipment, heat treat furnace components and fixtures and gas turbine components.
Conventional machining techniques used for iron based alloys may be used. This alloy does work-harden during machining and has higher strength and “gumminess” not typical of steels. Heavy duty machining equipment and tooling should be used to minimize chatter or work-hardening of the alloy ahead of the cutting.
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