DIN ISO 22826:2008-08

This standard specifies the requirements for hardness testing of transverse sections of narrow laser and electron beam welded joints in metallic materials. It covers Vickers and Knoop hardness tests in accordance with ISO 6507-1 and ISO 4545, respectively, with test forces of 0,098 N to less than 98 N (HV0.01 to less than HV 10) for the Vickers hardness test and test forces up to and including 9,8 N (less than HK 1) for the Knoop hardness test. This standard is applicable to welds made with and without filler wire. This standard may not be applicable to the testing of wider hybrid laser/arc welds.