硬质合金工具

[中文适用范围]： 本推荐实践涵盖了测量或评估烧结碳化物五种性能或特征的方法，这些性能或特征对烧结碳化物工具的性能有显着贡献。这些属性是：硬度@比重@表观孔隙率@结构@和晶粒尺寸。它们包含在下面单独的标题下。 [外文原描述]： 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.Cross Reference: ASTME18