ISO 9015-2:2016规定了高硬度梯度金属材料焊接接头横截面的显微硬度试验。它包括符合ISO 6507-1的维氏硬度试验，通常试验载荷为0.98 N至小于49 N（HV 0.1至小于HV 5）。 注:测试可确保确定母材（如果母材和母材的材料不同）和焊缝金属的最高和/或最低硬度水平。 ISO 9015-2:2016不适用于载荷为49,03 N及以上的焊缝硬度测试，ISO 9015-1涵盖了这一点。 ISO 9015-2:2016不适用于电阻点焊、凸焊和缝焊的维氏硬度测试，ISO 14271涵盖了这一点。 ISO 9015的本部分不适用于非常窄焊缝的硬度测试，例如通常通过激光和电子束焊接产生的焊缝（见ISO 22826）。

ISO 9015-2:2016 specifies microhardness testing on transverse sections of welded joints of metallic materials with high hardness gradients. It covers Vickers hardness tests in accordance with ISO 6507？1, normally with test loads of 0,98 N to less than 49 N (HV 0,1 to less than HV 5). NOTE Testing ensures that the highest and/or the lowest level of hardness of both parent materials (in the case of dissimilar materials both parent materials) and weld metal is determined. ISO 9015-2:2016 is not applicable to hardness testing of welds with loads of 49,03 N and above, which is covered by ISO 9015？1. ISO 9015-2:2016 is not applicable to Vickers hardness testing of resistance spot, projection and seam welds, which is covered by ISO 14271. This part of ISO 9015 is not applicable to hardness testing of very narrow welds, e.g. those typically produced by laser and electron beam welding (see ISO 22826).