UAMA B74。20-2004（R2016）定义了一般工业用亚筛级金刚石和立方氮化硼粉末的特性。然而，也有一些特殊应用，如电子和聚晶金刚石/立方氮化硼（PCD/PCBN）行业，需要在微粉化剂和最终用户之间商定定制规格。本标准不试图解决这些特殊情况。

UAMA B74.20-2004 (R2016) defines the characterization of sub-sieve size diamond and CBN powders for general industrial use. However, there are special applications such as the electronics and polycrystalline diamond/CBN (PCD/PCBN) industries that require custom specifications to be agreed upon between the micronizer and the end user. This standard does not attempt to address these special situations.