20/04/2018    www.weldability-sif.com    Weldability | Sif    sales@weldability-sif.com    0845 130 7757

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Welcome to the Weldability Sif Technical Knowledge Database. We answer many technical questions daily in assisting customers with selecting and using our products in their applications. You can search these questions using the box below, to find the answers you seek.





Displaying KnowledgeBase entry 1187:


A. Low Hydrogen electrodes.
Note, welding of EN26 in the hardened and tempered condition, as normally supplied, is not recommended and should be avoided if at all possible, as the mechanical properties will be altered within the weld heat affected zone. It is preferred that welding be carried out on EN26 while in the annealed condition, and that the work piece, immediately on cooling to hand warm, is then stress relieved at 640C - 660C prior to hardening and tempering. If welding in the hardened and tempered condition is really necessary, then the work piece, immediately on cooling to hand warm, should be if possible stress relieved at 15C below the original tempering temperature, if known.