Hardness test consists in deforming the surface of the specimen with a suitable indenter, followed by a measurement of the resulting imprint, which varies in size depending on the material. The most common methods of hardness testing are Vickers, Rockwell and Brinell tests.
Measurement of hardness in welding is particularly important since it allows to assess whether the material is over-hardened in places exposed to high temperatures. This test is performed on appropriately prepared metallographic specimens so that precise imprints measurements can be executed in the designated joint zones.
Hardness test is performed in compliance with:
- PN-EN ISO 6506-1
- PN-EN ISO 6507-1
- PN-EN ISO 6508-1
- PN-EN ISO 9015-1