Home / Standards / GB/T 4699.4-2008 GB/T 4699.4-2008 Active Ferrochromium and silicochromium - Determination of carbon content - Infrared absorption method and gravimetric method 铬铁和硅铬合金 碳含量的测定 红外线吸收法和重量法 Standard Type GBT ICS 77.100 CCS H11 Status 现行 Issue Date 2008-05-13 Implementation 2008-11-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A