Form:

This specification covers a corrosion and heat-resistant, air-melted, nickel alloy in the form of investment castings.

Application:

These castings have been used typically for structural parts requiring high strength up to 1200 °F (649 °C) and oxidation and corrosion resistance up to 1800 °F (982 °C), but usage is not limited to such applications (See 8.4).

Classification:

Castings conforming to this specification are classified as follows:

Class 1 - Trace element limits conforming to AMS 2280, Class 1 (AMS 2280-1)

Class 2 - Trace element limits conforming to AMS 2280, Class 2 (AMS 2280-2)

Class 3 - Trace element limits do not apply

Castings shall conform to Class 3 unless Class 1 or Class 2 is specified by purchaser.