标准摘要
[中文适用范围]： 本文件规定了 ISO 4545-2 中规定的用于间接验证努氏硬度试验机的参考块的校准方法。 该方法仅适用于长对角线≥0.020mm的压痕。 [外文原描述]： ISO 4545-3:2017 specifies the method for the calibration of reference blocks to be used for the indirect verification of Knoop hardness testing machines as specified in ISO 4545‑2. The method is applicable only for indentations with long diagonals ≥0,020 mm.
英文名称Metallic materials — Knoop hardness test — Part 3: Calibration of reference blocks