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 21-12N是一种用于阀门的奥氏体铬镍不锈钢。它具有优异的高温强度和硬度，以及对燃烧产物的耐腐蚀性。这种合金含有0.15-0.25%的氮，以提高高温强度。广泛用作柴油机和汽油机两片式排气阀的阀盖材料。

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 21-12N is an austenitic chromium-nickel stainless steel for valves. It offers excellent high-temperature strength and hardness as well as corrosion resistance to combustion products. This alloy contains 0.15-0.25% nitrogen for increased high-temperature strength. It is widely used as the head material in two piece exhaust valves for both diesel and gasoline engines.