Methods for chemical analysis of aluminium and aluminium alloys—Part 4:Determination of iron content
全国有色金属标准化技术委员会(SAC/TC 243)
〓〓GB/T 20975的本部分规定了邻二氮杂菲分光光度法和重铬酸钾滴定法测定铝及铝合金中铁含量。本部分适用于铝及铝合金中铁含量的仲裁测定。邻二氮杂菲分光光度法测定范围：0.001 0%～3.50%；重铬酸钾滴定法测定范围：＞3.50%～65.00%。
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