TECHNOLOGY
NEW WELDING WIRE EXTENDS EQUIPMENT LIFE T
he 6070N alloy provides best-in-class resistance to erosion, abrasion and
corrosion, especially at extremely high temperatures. However, until March 2023, its use was restricted as it was only available as a stick electrode for manual metal arc (MMA) welding. Enrique Matey, Global Product Manager Welding Consumables, explains how a new flux-cored welding wire has opened up the alloy for much wider adoption. Industrial processing often requires
components to minimize wear despite a steady flow of highly abrasive and corrosive materials. Wear facing coatings made from extremely hard and tough materials keep components in service
for longer. One example is an alloy called DO*6070N, which is competitive with high-performance nano-alloys for the toughest environments and offers superior wear resistance. However, one factor has been holding
the alloy back from wide adoption. Until recently, 6070N was only available as a stick electrode for manual metal arc (MMA) welding. As a result, it was only used in niche applications. As its developer, we could foresee a
multitude of opportunities for customers to extend the life of critical components. That’s especially true in environments with extremely high temperatures, where the wear resistance of many materials drops away, leading to premature failure. The alloy maintains its performance at elevated
temperatures – its hardness is three times higher than other materials at 800°C.
The need for flux-cored welding wire Because of this capability, we have had a long-held ambition to produce DO*6070N as a flux-cored welding wire for MIG and TIG welding. These offer major advantages over MMA. From an economic point of view,
MIG welding has a higher deposition rate, therefore can cut the duration of repairs. In turn, this can reduce cost and / or enable faster return of critical equipment to service after a repair. This process is also compatible with automatic and robotic welding. EnDOTec DO*6070N also uses the material more efficiently. Being a Metal
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