Nickel-copper-aluminum alloys, claw es A and B, are used for the same purposes with the class B preferred where improved cutting and machineability are required. For optimum tool life the annealed condition is recommended. Cold-drawn material is intended for automatic machining operations.

Nickel-copper-aluminum alloy sheet and strip in the annealed condition may be used in the manufacture of articles in which heading, bending, curling, drawing, forming, lock-seaming, welding, etc., operations are involved.

Cold-rolled strip of half-hard and full-hard temper are used where light deformations or liberal bending radii are involved, for applications such 88 springs.

Nickel-copper-aluminum alloy wire in the annealed condition is intended for severe forming, cold-heading, and roll-threading operations.

Nickel-copper-aluminum alloy wire, class A, spring-temper in the as-drawn condition is intended for coiling of helical springs which are to be age hardened after coiling in order to obtain maximum strength and hardness. Where helical springs are to be cold pressed, the cold pressing is to be done after coiling and aging.