Description / Abstract:
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.