范围:本文件规定了通过高温还原萃取法测定金属粉末总氧含量的方法。 经同意，该方法也适用于测定烧结金属材料的总氧含量。 本方法适用于在试验条件下不挥发的所有金属、合金、碳化物及其混合物粉末。样品可以是粉末状或致密状。 对提供的粉末进行分析，但如果粉末含有润滑剂或粘合剂，则该方法不适用。如果存在此类物质，则仅当可首先通过不影响粉末含氧量的方法将其完全去除时，才可使用该方法。 本文件应结合ISO 4491-1阅读。交叉引用:ISO 4491-1购买本文件时可获得的所有现行修订均包含在购买本文件中。

Scope: This document specifies a method for the determination of the total oxygen content of metallic powders by reduction-extraction at high temperature. By agreement, this method is also applicable to the determination of the total oxygen content of sintered metal materials. The method is applicable to all powders of metals, alloys, carbides, and mixtures thereof which are non-volatile under the test conditions. The sample can be in powder or compact form. The analysis is carried out on the powder as supplied, but the method is not applicable if the powder contains a lubricant or binder. If such substances are present, the method may be used only if they can first be completely removed by a method not affecting the oxygen content of the powder. This document is to be read in conjunction with ISO 4491-1.Cross References:ISO 4491-1All current amendments available at time of purchase are included with the purchase of this document.