WHAT STRENGTH CAN BE EXPECTED IN 12/14% MANGANESE WELD METAL?
Assuming reasonably good welding procedures the all-weld metal tensile strength of AWS EfeMn electrode is about 125,000 psi. In addition, the weld metal has high ductility. When tested to destruction, welds seldom break, but rather pull out the parent metal. • MAY OXY-ACETYLENE WELDING BE USED ON HIGH-MANGANESE STEEL? Generally, no. Under almost all circumstances there is no advantage over the electric arc. Oxy-acetylene can result in too high heat input into the high-manganese steel parent metal. • HOW ABOUT MACHINING MANGANAL? It does not lend itself to machining by usual machine shop methods. When a drill or cutting tool is applied it quickly work-hardens the area to the extent that machining becomes very difficult. It is, however, machined within limits, using special methods and tooling. • WHAT METHODS ARE EASILY USED TO WORK MANGANAL? It can be flame cut by oxy-acetylene torch, cut by abrasive cut-off machine and electric welded. Shearing, bending and rolling require heavy equipm
