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。这些图表和可加工性、图表和热处理图表和图表。347型（UNS S34700）和348型（UNS S34800）是含有铌和钽的奥氏体铬镍不锈钢。建议在焊接后省略退火操作的情况下使用这些等级。还建议在425至900摄氏度（800至1650华氏度）的温度下使用。348型用于需要限制钽含量的应用中，例如在放射性服务中遇到的应用。 这些类型在退火时基本上是非磁性的，在冷加工时会变得略微磁性。

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.Type 347 (UNS S34700) and type 348 (UNS S34800) are austenitic chromium-nickel stainless steels containing columbium and tantalum. These grades are recommended where it is preferred to omit the annealing operation after welding. They are also recommended for service at temperatures between 425 and 900 deg C (800 and 1650 deg F). Type 348 is used in applications that require a restricted tantalum content such as those encountered in radioactive service. These types are essentially non-magnetic when annealed and become slightly magnetic when cold worked.