Home / Standards / GB/T 5687.2-2007 GB/T 5687.2-2007 Abolished Ferrochromium , silicochromium and nitrogen - bearing ferrochromium - Determination of silicon content - The perchloric acid dehydration gravimetric method 铬铁、硅铬合金和氮化铬铁 硅含量的测定 高氯酸脱水重量法 Standard Type GBT ICS 77.100 CCS H11 Status 废止 Issue Date 2007-09-11 Implementation 2008-02-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A