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AWS E8018-B1

Description and Applications

HE8018-B1 is a iron powder low hydrogen type electrodes for welding 0.50% Cr-0.50% Mo steels to be used at high temperature around 500℃.  It is suitable for welding of high-pressure boiler, chemical and refinery industries.  It has high deposition rate, with excellent X-ray performance and mechanical properties, too.

 
Guideline in Usage
1.

Electrode should be re-dried at 350 400℃ for 60 minutes.

2. Preheated and interpass temperature should be controlled at 100 ~ 200℃ during welding.  Stress relieved heat treatment at 605~635℃ for one hour.
3. Keep the arc as short as possible.
 
 
Typical Chemical Composition of Weld Metal(%)
C Si Mn P S Mo Cr
0.08 0.35 0.86 0.019 0.008 0.47 0.49
 
Typical Mechanical Properties of Weld Metal
Yield Strength
N/mm2
Tensile Strength
N/mm2
Elongation
Post heat Treatment
514 617 25 620℃ × 1 hr.
 
Size & Recommended Current RangeAC )
Diameter (mm)
2.6 3.2 4.0 4.8 5.0 6.0
Length (mm) 
300 350 350
400
350 450 450
Current (Amp) F 60~90 90~140 150~200 190~230 190~240 240~300
V,OH 50~80 80~120 120~150 140~180 140~190