Gives requirements for chemical composition, mechanical properties and other characteristics for castings which may be supplied in the 'as cast', the 'proof machines' or the 'fully machined' condition in nickel-copper alloy (1% silicon), nickel-copper alloy (2.5% silicon) and nickel-copper alloy (4% silicon). Includes definitions, freedom from defects, identification and marking, inspection and sampling procedure and test methods.