Form

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

Application

These castings have been used typically for parts, such as turbine blades or vanes, requiring good strength and hot corrosion resistance up to 1800 °F (982 °C), but usage is not limited to such applications.

Classification

Castings conforming to this specification are classified as follows:

Type A - Castings supplied in the as cast condition

Type B - Castings supplied in the solution heat treated condition

Type C - Castings supplied in the solution treated and precipitation heat treated condition

Class 1 - Trace element limits conforming to AMS2280-1

Class 2 - Trace element limits conforming to AMS2280-2

Class 3 - Trace element limits do not apply

Castings shall be supplied in the Type A condition unless Type B or Type C is specified by purchaser.

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