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OK 74.79 is a high recovery, LMA electrode suitable for welding high tensile steels for structures. Very suitable for enclosed joint welding of rail and for cladding on rail when a hardness of about 250 HV is desired. The moisture content of the coating is very low, which makes OK 74.79 suitable when preheating cannot be applied. The risk of grain boundary cracking is very low when welding with OK 74.79.
Welding Invented
When our founder Oscar Kjellberg developed the world's first coated welding electrode in 1904, he launched a company whose innovation and uncompromising standards have helped create the history of welding itself. This legacy continues in the quality, performance, and continuous development of the covered electrodes we make today.
Factory Fresh Low Alloy Electrodes, Straight from the Pack
ESAB's VacPac™ packaging is hermetically sealed and vacuum-packed to protect low alloy electrodes from moisture pick up and re-absorption from the air. Electrodes can be used straight from the package without the need to re-bake them or you can store them temporarily in holding ovens and quivers. Get fresh, dry low alloy covered electrodes every time with ESAB.
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