本推荐规程涵盖了测量或评估烧结硬质合金五种性能或特征的方法，这些性能或特征对烧结硬质合金刀具的性能有重要影响。这些特性包括:硬度、比重、表观孔隙率、结构和粒度。这些问题在下面的单独标题下讨论。

This recommended practice covers methods for measuring or evaluating five properties or characteristics of sintered carbide which contribute significantly to the performance of sintered carbide tools. These properties are: hardness, specific gravity, apparent porosity, structure, and grain size. They are covered under separate headings below.