J I S D4303

Description and Applications
H03 is a lime Titania type covered electrodes. It posses a smooth, quiet medium penetrating arc with minimal spatter loss. Good slag removal with a finely rippled bead contour. This quick freezing slag gives optimum performance in vertical-down welding. Excellent for welding complicated structure of thin and medium thick plates. It is suitable for welding of medium or thin plate for ships, vehicles, structures, and steel constructions
Guideline in Usage

Dry the electrodes at 70 120℃ for an hour before use.

2. Pay attention not to exceed for the range of proper currents and weaving motion. Welding with excessive current lowers X-ray performance. The width of weaving motion should be limited within 2.5 times electrode diameter when it is necessary.
Typical Chemical Composition of Weld Metal(%)
C Si Mn P S
0.07 0.12 0.46 0.019 0.011
Typical Mechanical Properties of Weld Metal
Yield Strength
Tensile Strength
Impact Value
J (-20℃)
402 459 30 72
Size & Recommended Current RangeAC
Diameter (mm)
2.6 3.2 4.0 5.0
Length (mm) 


400 450
Current (Amp) F 80100 100140 160220 200260
V,OH 7090 90130 140180 160200