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Alloy 660 is a precipitation hardening alloy, which maintains superior strength at high temperatures up to 700?, surpassing austenitic stainless steels. With a higher nickel content, Alloy 660 also includes such elements as titanium and aluminum for hardening. Age hardening is used to precipitate ?' phase [Ni3 (Al, Ti)] making this an extraordinarily strong metal at high temperatures. Alloy 660 is an excellent choice when high-temperature strength is required such as jet engines, gas turbines and turbo charger components.Alloy 660 SpecificationsGradeUNSAlloy 660S66286Alloy 660 Chemical Composi