该方法适用于0.25%（m/m）至35%（m/m的铬含量。规定原理、试剂、仪器、取样、程序、结果表达和测试报告。附件A提供了关于国际合作试验的更多信息，附件B以图形方式表示精度数据。

This document specifies a method for the determination of chromium in steel and iron by potentiometric or visual titration. The method is applicable to chromium contents between 0,25 % (mass fraction) and 35 % (mass fraction). If vanadium is present, the visual titration is applicable only to test portions containing less than 3 mg of vanadium. NOTE   The visual titration can be applicable to test portion containing between 3 mg and 6 mg of vanadium.