Z308 cast iron electrode Model GB / T: EZNi-1 is equivalent to AWS: EZNi-CI Description: pure nickel core wire, strong reduction of strong graphite cast iron electrode, welding, weldments may from time to warm-up, have a good crack resistance and processability, AC, DC, and process performance. High toughness, high abrasion resistance, rinse wear. Good weldability. The anti rock sanding tablets wear, extend equipment life 4-8 times. Usage: repair welding of thin cast iron pieces and machined surface, such as cylinder head, engine mounts, gear box, and machine tool guide gray iron castings. Nickel is expensive, not meet the requirements in the other electrode before selection. Deposited metal chemical composition /% C ≤ 2 Si ≤ 2.5 Mn ≤ 1 Fe ≤ 8 Ni ≥ 90 The product packaging is intact, the test results for pure iron core welding, I did not understand, please enlighten professionals.