Home / Standards / GB/T 24174-2009 GB/T 24174-2009 Abolished Steel - Determination of Bake-Hardening-Index (BH2) 钢 烘烤硬化值(BH2)的测定方法 Standard Type GBT ICS 77.040.10 CCS H22 Status 废止 Issue Date 2009-06-25 Implementation 2010-04-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A