Description and Applications
HJ250B is a low hydrogen type electrode for build-up or surfacing.
For hard facing structures applied in gouging abrasions by heavy impacts such as crusher hammers and jaws. Its weld metal has excellent toughness and high work hardening property due to austenitic structure by rapid cooling during welding.

Guideline in Usage

1. Electrodes should be re-dried at 300350℃ for 60 minutes before used.
2. Preheating and Post heating should never be done.
3. The recommended currents for welding are mentioned below.
Typical Chemical Composition of Weld Metal(%)
C Si Mn P S Ni Cr
0.400 0.300 13.50 0.018 0.002 0.500 0.100
Typical Hardness of Weld Metal (Vickers Hardness)
As Welded After Work Hardening
220 400
Size & Recommended Current RangeAC
Diameter (mm)
3.2 4.0 5.0
Length (mm) 
350 400 450
Current (Amp) F 70110 100150 140~190