Home / Standards / GB/T 4702.2-2008 GB/T 4702.2-2008 Abolished Chromium metal - Determination of silicon content - The perchloric acid gravimetric method 金属铬 硅含量的测定 高氯酸重量法 Standard Type GBT ICS 77.100 CCS H11 Status 废止 Issue Date 2008-05-13 Implementation 2008-11-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A