Form This specification covers a corrosion-resistant nickel-copper alloy in the form of bars 0.093 to 4.000 inches (2.35 to 100.00 mm) in diameter or distance between parallel sides@ and forgings and forging stock of any size (see 8.5) Application These products have been used typically for fittings@ such as cones@ nipples@ and unions@ in fluid line assemblies using AMS4574 or AMS4575 tubing@ but usage is not limited to such applications