FEATURES&BENEFITS
• Good arc characteristics
• Low spatter level
• Quick and easy slag removal
• Low moisture reabsorption
• Low smoke level
• Low hydrogen less than 4 ml/100 g • Stable, easy to control arc
• Improves weld bead appearance, higher deposition
• Reduces clean-up time
• Prevents starting porosity
• Welder safety and comfort
• Resistant to hydrogen-induced cracking
TYPE OF CURRENT
Welding Positions:
AWS E8018-B2 H4R Low Alloy Electrodes Tianjin, China
Outstanding welding electrode for higher strength steels with tensile strengths greater than 80,000 pounds. The coating is specially formulated to resist moisture pick-up under conditions of high heat and humidity. The electrode offers resistance to moisture reabsorption which helps prevent hydrogen cracking and aids in elimination of starting porosity.
Fabrication and maintenance of boilers and associated piping.
Single and multiple pass, DCEP, AC, All Position Earthmoving equipment
• Boiler fabrication and maintenance
RECONDITIONING
STORAGE
TYPICAL WELD METAL CHEMISTRY* (Chem Pad)
TYPICAL MECHANICAL PROPERTIES* (SR)
• Maintaining a proper welding procedure - including pre-heat and interpass temperatures - may be critical depending on the type and thickness of steel being welded.
CONFORMANCES AND APPROVALS
• AWS A5.5, E8018-B2 H4R
• ASME SFA 5.5, F-4, A-3, E8018-B2
• ABS E8018-B2
ARC LENGTH
Very short arc
FLAT
Angle electrode 10°-15° from 90°
VERTICAL-UP
Use weaving techniques
VERTICAL-DOWN
Not recommended
OVERHEAD
Use slight weaving motion within the puddle
Direct Current Electrode Positive (DCEP) or AC
After opening, store in holding oven (220°F to 350°F) until used.
If exposed to atmosphere for extended periods, reconditioned for one (1) hour at 600°F.
STANDARD DIAMETERS AND PACKAGES
For a complete list of diameters and packaging, please contact Hobart Brothers at (800) 424-1543 or (937) 332-5188 for International Customer Service.
Electrode positive, work negative (DCEP) or AC
GENERAL
TYPICAL DEPOSITION DATA (at optimum)
TYPICAL DIFFUSIBLE HYDROGEN:
