AWS EC1 Z208 cast iron electrode

AWS EC1 Z208 cast iron electrode

Z208
GB：EZC
AWS：EC1
Current：Used for repair welding on the flaws of gray cast iron.

Z208

According with GB EZC
Corresponding with AWS EC1


Introduction: Z208 is a kind of cast iron electrode with low-carbon steel core wire and strong graphitization type coating. The weld can become gray cast iron when cooled slowly. The crack-resistance is worse. AC/DC. The price is lower.


Uses: Used for repair welding on the flaws of gray cast iron.


Chemical Composition of Deposited Metal (%)
Chemical Composition
C
Mn
Si
S
P
Fe
Guarantee Value
2.00~4.00
≤0.75
2.50~6.50
≤0.100
≤0.150
Balance

Reference Current (AC, DC+)
Electrode Diameter(mm)
φ3.2
φ4.0
φ5.0
Welding Current (A)
90~120
130~180
190~220

Instructions:
1.The electrodes must be baked under about 150℃ for an hour before welding.
2.For some key casting structures receiving stress, impact, etc., this kind of electrodes are not suitable.
3.The flaws on the low rigidity surfaces of little thin section castings can be given repair welding without preheating. However, general weldments need to be preheated to 400℃ and given insulation work and slow cooling after welding so that the repaired places may be able to be given machine work.

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