ICS 77.140.80 CCS J 31 中华人民共和国国家标准 GB/T 5612 —2025 代替 GB/T 5612—2008 铸铁牌号表示方法 Designation of cast irons 2025 ⁃03⁃28 发布 2025 ⁃10⁃01 实施 国家市场监督管理总局 发 布 国家标准化管理委员会 GB/T 5612—2025 目 次 前言····································································································································Ⅲ 1 范围·································································································································1 2 规范性引用文件··················································································································1 3 术语和定义························································································································1 4 铸铁分类及代号··················································································································1 5 铸铁牌号表示方法···············································································································1 6 铸铁牌号表示示例···············································································································2 附录 A（资料性） 铸铁牌号与 ISO 铸铁牌号对照···········································································5 参考文献·······························································································································9 Ⅰ
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