UNI 5768-1966 不含铁金属材料化学分析方法.镁和锰含量为0.01-2.0%的镁合金中的锰的测定.以UNI 5767-66 P取代UNI 3726.测光法
Methods for chemical analysis of ferrous metal materials. Determination of manganese in magnesium alloys with magnesium and manganese content of 0.01-2.0%. Replace UNI 3726 with UNI 5767-66 P. Photometry