EFeMn-B                   

According with GB EDMn-B-16
Corresponding with AWS EFeMn-B

Introduction: EFeMn-B is a kind of high-manganese steel surfacing electrode with low-hydrogen potassium type coating. AC/DC (the open circuit voltage should be higher than 70V when using AC). In surfacing welding, weak current and stringer bead should be used, and it should be hammered or given water quenching immediately when it turns red to decrease crack tendency. The surfacing metal is austenitic high-manganese steel. It can be given work hardening, and it has toughness and wear-resistance.The different between D266 and D256 is that Mo is added to the weld metal to increase crack-resistance and wear-resistance.

Applications: Used for surfacing welding on abrasion parts from all kinds of crushers, high-manganese steel rails, buckets, bulldozers, etc..

Chemical Composition of Deposited Metal (%)

Hardness of Surfacing Layer: HB≥170

Reference Current (AC, DC+)

Instructions:
1.The electrodes must be baked under 300-350℃ for an hour before welding.
2.For surfacing welding on worn-out high-manganese steel work pieces, in advance, the worn-out parts should be cleared away, or given water toughening, or given backing weld with Cr-Mn steel electrodes (such as D277).
3.There is thick smoke in surfacing welding, so please keep ventilated then operate.