Home / Standards / GB 4702.2-84 GB 4702.2-84 Chromium metal—Chemical analysis method—Determination of silicon content by perchloric acid dehydration gravimetric method 金属铬化学分析法 高氯酸脱水重量法测定硅量 Standard Type GB ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A