ISO 9015的本部分规定了金属材料电弧焊接头横截面的硬度试验。信息技术 包括根据ISO 6507-1进行的维氏硬度试验，通常试验载荷为49,03 N或98,07 N（HV 5 或HV 10）。 然而，这些原则可适用于布氏硬度试验（适当的试验负荷为HB 2,5/15625 或符合ISO 6506-1的HB 1/2,5），以及符合ISO 6507-1和 ISO 9015-2。 注:应进行试验，以确保母材和母材的最高和最低硬度水平 确定焊缝金属。 ISO 9015的本部分不适用于奥氏体不锈钢的试验焊缝。

This part of ISO 9015 specifies hardness tests on transverse sections of arc welded joints of metallic materials. It covers Vickers hardness tests in accordance with ISO 6507-1, normally with test loads of 49,03 N or 98,07 N (HV 5 or HV 10). However, the principles may be applied to Brinell hardness testing (with appropriate testing loads of HB 2,5/15,625 or HB 1/2,5) in accordance with ISO 6506-1 and micro hardness testing in accordance with ISO 6507-1 and ISO 9015-2. NOTE Testing should be carried out to ensure that the highest and the lowest level of hardness of both parent metal and weld metal is determined. This part of ISO 9015 does not apply to test welds in austenitic stainless steels.