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。NIROSTA 4521是一种铁素体等级，相当于AISI 444型。它是一种低碳、高铬（约18%）合金，也含有2%的钼和少量的钛。添加钛是为了稳定，尤其是焊接管道。

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.NIROSTA 4521 is a ferritic grade equivalent to AISI type 444. It is a low-carbon, high-chromium (about 18%) alloy also with 2% Mo and minimal titanium. The titanium is added for stabilization, particularly for welded tubing.