本文件规定了测定合金钢中锰含量的电位滴定法或目视滴定法。 该方法适用于锰质量分数在2%到25%之间的情况。钒和铈干扰测定。如果样品中铈的质量分数小于0.01%，或样品中钒的质量分数小于0005%，则干扰可以忽略，否则需要进行理论校正。

This document specifies a potentiometric or visual titration method for the determination of manganese content in alloyed steels. The method is applicable to manganese mass fractions between 2 % and 25 %. Vanadium and cerium interfere with the determination. If the mass fraction of cerium in the sample is less than 0,01 %, or the mass fraction of vanadium in the sample is less than 0,005 %, the interference is negligible, otherwise theoretical corrections are necessary.