Z308 cast iron electrode 
 Model GB / T: EZNi-1 is equivalent to AWS: EZNi-CI 
 Description: welding pure nickel core, strong strong reduction of the iron graphite electrodes, welding, the weld pieces from time to preheat, good crack resistance and processability, AC, DC, process performance. High toughness, high wear resistance, and wear red rinse. Good solderability. Abrasive sanding against the rock, extend equipment life 4-8 times. 
 Uses: used thin pieces of cast iron welding and machining surfaces, such as cylinder heads, engine blocks, gear boxes and machine tool guide and other important gray cast iron. Nickel is expensive, the other electrode should be selected not meet the requirements. 
 Chemical Composition of Deposited Metal /% 
 C ≤ 2 Si ≤ 2.5 Mn ≤ 1 Fe ≤ 8 Ni ≥ 90