Hardness testing for welding joint integrity is vital for guaranteeing the structural integrity of the metal pieces being joined. It’s not always the same types of metal that are being welded together. The weld itself might be of the same material as the welded workpieces or might be of a different material (alloy) compared to the welded components. Because welding uses high heat, it can change the surrounding metal properties. At the joint of the two metals, there could be micro-cracks or delaminations that make the joint brittle. There’s no use having an ultra-strong joint if the surrounding metal is... Continue reading