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The product, named Postalloy® FrogTuff, is offered as a flux-cored wire as well as a flux-coated electrode. Under severe impact, such as hammering or pounding from continuous rail traffic, the fully austenitic weld deposit quickly becomes tougher and harder very quickly. It will not spall or mushroom.The flux-coated electrode operates on either AC or DC reverse polarity. The arc is smooth and stable with low spatter loss. Slag removal is easy. Postalloy® FrogTuff has a tensile strength of 125,000 psi, a yield strength of 80,000 psi and a 34% elongation. The hardness as deposited is 15-22 Rc and work hardens up to 55 Rc. The company has also introduced a self-shielded flux cored wire version of the product named Postalloy® FrogTuff-FCO. Postalloy® FrogTuff-FCO is a high alloy austenitic manganese welding wire for joining and build-up. It produces high-strength, crack-resistant deposits that are tough, ductile and work-harden rapidly. The high yield strength reduces mushrooming from impact. Slag release is very easy…..with visibly less fumes and smoke than other manganese wires. Postalloy® FrogTuff-FCO has a tensile strength of 135,000 psi, a yield strength of 90,000 psi and a 30% elongation. The hardness as deposited is 20 Rc and work hardens up to 50-55 Rc. Postalloy RailTuff is a build-up electrode that provides wear resistance far superior to low and medium alloy carbon steels. Deposits are extremely tough and have a high resistance to impact and deformation. Not subject to spalling or roll-over. Hardness of 32-38 Rc.Postalloy RailTuff-FCO is a strong low alloy build-up wire. Weld deposits are exceptionally sound and dense and heavy build-ups are possible without danger of cracking. Hardness of 30-35 Rc.