Z508 comply GB EZNiCu-1 
 Rather AWS ENiCu-B 

 Description: Z508 is a nickel-copper alloy (Monel) welding core, strong reduction of graphite cast iron welding rod coating. Its process performance and cutting performance are close to Z308, but because of the larger shrinkage and crack resistance is poor. Welded joint strength is lower, so should not be used for parts of the welding force can be used to warm at room temperature or low temperature (up to about 300 ℃) of gray cast iron welding. AC and DC. 


 Uses: used in less demanding strength of the welding of gray cast. 


 Chemical Composition of Deposited Metal (%) Chemical Composition C Mn Si S Cu Ni Fe total amount of other elements 
 Guaranteed value ≤ 1.00 ≤ 2.50 ≤ 0.80 ≤ 0.025 24 ~ 35 60 ~ 70 ≤ 6 ≤ 1.00 


 Reference current (AC, DC +) electrode diameter (mm) φ2.5 φ3.2 φ4.0 φ5.0 
 Welding current (A) 50 ~ 100 70 ~ 120 110 ~ 170 140 ~ 190 


 Note: 
 1. Welding electrodes shall be subject to 150 ℃ or so before baking 1h. 
 2. Welding fortune to narrow bead suitable article, the length of each weld should not exceed 50mm, immediately after welding, welding with a small hammer to gently hammer to remove the welding zone stress and prevent cracking.