Welding Cast Iron Nickel Rod. So a quick spark test determined it was probably gray cast iron possibly white cast but either way I knew it was ideally a job for Nickel Electrodes as those are two of the harder kinds of cast to weld. Types of Rods to Weld Cast Iron Nickel Rods.
Id used 7018 on Cast with success before but since this wasnt my vise I didnt want to take a chance on it. Nickel rods are 99 percent machinable and better used for casting. Go with a nickel rod if youre arc welding.
Types of Rods to Weld Cast Iron Nickel Rods.
Most professional welders use nickel rods having 99 of the nickel which havent absorbed carbon from cast iron and give good results of welding. By using coated rods these cracks dont appear. Cast iron is most commonly welded using a pure nickel or ferro nickel rod. CAST IRON ELECTRODES Nickel 99 Nickel 55 Non-Nickel EST Alloys DESCRIPTION Washington Alloy Nickel 99 is recommended for all-position welding of thin cast iron sections where maximum machinability is required.