Z508 cast iron welding rods

Z508 cast iron welding rods

GB：EZNiCu-1
AWS：ENiCu-B
Current：Used for repair welding on gray cast iron pieces not requiring strength too much.
Main Applications：

Introduction: Z508 is a kind of cast iron electrode with Ni-Cu alloy (Monel) core wire and strong reducibility graphite type coating. Both the welding performance and the machinability are quite similar with those of Z308. However, due to the higher shrinkage rate, the crack-resistance is worse. The welded joint has lower strength, so it is not suitable for welding force-bearing parts. It can be used for welding gray cast iron under normal temperature or preheated a little (to about 300℃). AC/DC.


Uses: Used for repair welding on gray cast iron pieces not requiring strength too much.


Chemical Composition of Deposited Metal (%)
Chemical Composition
C
Mn
Si
S
Cu
Ni
Fe
Total Quantity of Other Elements
Guarantee 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

Instructions:
1.The electrodes must be baked under about 150℃ for an hour before welding.
2.When welding, stringer bead is suitable in the manipulation of electrodes. Every time, the weld length is suitable when lower than 50mm. The welded places should be hammered lightly immediately after welding so as to eliminate the stress in the welded areas and avoid cracks.

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