ISO 18265:2013规定了将硬度值转换为其他硬度标尺中的等效值以及拉伸强度估算值的原则。它提供了有关转换表使用的一般信息。 附件A至G中的换算表适用于非合金钢和低合金钢、铸钢、淬火和回火用钢、冷加工用钢、高速钢、工具钢、硬质合金以及有色金属和合金。 附录H给出了硬度试验标准中试验程序变更的影响信息。 使用ISO 18265:2013获得的转换值仅直接适用于测试的精确材料。对于所有其他材料，它们仅提供一个指标。在所有情况下，转换后的值都不能替代通过正确的标准方法获得的值。特别是，抗拉强度估算值是ISO 18265:2013中最不可靠的换算值。

ISO 18265:2013 specifies the principles of the conversion of hardness values to equivalent values in other hardness scales and to estimates of tensile strength. It gives general information on the use of the conversion tables. The conversion tables in Annexes A to G apply to unalloyed and low alloy steels and cast steel, steels for quenching and tempering, steels for cold working, high speed steels, tool steels, hardmetals, and non-ferrous metals and alloys. Annex H gives information about the effects of changes of the test procedure in the standards specifying the hardness tests. Converted values obtained using ISO 18265:2013 are only directly applicable to the exact material tested. For all other materials, they provide an indicator only. In all cases, the converted values are not intended as replacements for values obtained by the correct standard method. In particular, tensile strength estimates are the least reliable converted values in ISO 18265:2013.