Nihonweld NHF-670 description: NHF-670 is a high-efficiency electrode for hardfacing workpieces of steel, cast steel or high Mn-steel, subject to simultaneous wear by impact, compression and abrasion. Due to its recovery, this electrode is ideally suited for for economic one-layer applications. Typical applications are crane wheels, rollers, chain links, sprocket wheels, gliding surfaces, screw conveyors, beaters, edge runners, guide wheels, baffle plates etc.