Specifications for hot isostatically-pressed powder metal components are available from the American Society for Testing and Materials (ASTM). The first, A 988, covers 16 grades of martensitic, austenitic, and austenitic-ferritic stainless steel flanges, fittings, valves, and parts for high temperature service. The second, A 989, covers five grades of alloy steel flanges, fittings, valves, and parts for high temperature service.