Pure nickel electrode NOTES1 Welding electrodes shall be about 150 ℃ baking 1h. 2 For withstand stresses and shocks and other important casting structure, the electrode should not be used. 3 small thin-walled castings parts of the defects Nickel Alloy Welding Electrodes can be little stiffness without preheating welding, and general weldment to be preheated to 400 ℃, insulation slow cooling after welding, the welding at a possible cutting. Description: Z238 is a low-carbon steel core, strong graphite type coating iron rod, because a certain amount of ductile agent, so that the deposited metal graphite in the cooling process spherical precipitates, both AC and DC . Uses: Used for welding ductile iron.