Welding For Cast Iron. However were only going to discuss the most common techniques employed for welding cast iron. WELDING OF CAST IRON Cast iron is an extremely versatile material used in thousands of industrial products.
Stick welding is a complex welding method. It is hard wear-resistant and relatively inexpensive. While we usually think of cast iron as being brittle having low ductility this is not true of all cast irons as we shall see shortly.
The best choice for MIG wire is specialty nickel wire but the most costly option is to use stainless steel MIG wire.
Cast Iron Melting Point Cast iron has a melting point of 1100 to 1300 Celcius 2112 2372 Fahrenheit due to the high carbon content. Flux cored wires nickel-iron and nickel-iron-manganese wires are also available for welding cast irons. These methods include gas welding arcstick welding MIG welding and TIG welding. Care must be taken not to oxidise the cast iron during acetylene welding as this causes silicon loss and the formation of white iron in the weld.