查看样本合金摘要数据表（PDF）自1952年以来，合金摘要一直是世界各地使用的金属和合金材料性能数据的主要参考。以图表、图表和表格为特色，这些表格给出了有关成分或特性、物理和机械性能、热处理和可加工性的事实和数字。Carpenter 21-55N阀门钢是一种奥氏体含氮铬镍锰合金，为排气阀应用提供了高温强度和耐腐蚀性的完美结合。它被广泛用作内燃机两片式气门的缸盖材料。它还在汽车发动机中发现一体式阀门的使用越来越多。

View Sample Alloy Digest Data Sheet (PDF)Since 1952, Alloy Digest has been the leading reference for materials property data on metals and alloys used throughout the world. Featuring graphs, charts and tables, these sheets give facts and figures on composition or characterization, physical and mechanical properties, heat treatment, and machinability.Carpenter 21-55N Valve Steel is an austenitic nitrogen-bearing chromium-nickel-manganese alloy which offers an excellent combination of high temperature strength and corrosion resistance for exhaust valve applications. It is widely used as the head material in two-piece valves for internal combustion engines. It is also finding increasing use for one-piece valves in automobile engines.