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Description and Applications |
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Welding
of mild steel for ships, machinery, structures, and
bridges, and carbon steels of less than 35 mm thickness
for boilers and pressure vessels. |
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Guideline in Usage
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1. |
If
coating flux absorbs excessive moisture, arc and
slag fluidity become unstable, spatters
increase, and undercuts and blowholes are apt to
occur. Damp electrodes should be re-dried at 70
∼ 120℃ for one hour. |
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2. |
Excessively high current and wide weaving
deteriorate X-ray quality. Use optimum current
and limit weaving width to within 2.5 times
electrode diameter. |
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Typical
Chemical Composition of Weld Metal（％） |
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C |
Si |
Mn |
P |
S |
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0.07 |
0.08 |
0.46 |
0.015 |
0.012 |
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Typical Mechanical Properties of Weld Metal |
Yield Strength
N/mm2 |
Tensile Strength
N/mm2 |
Elongation
％ |
Impact Value
J(0℃) |
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406 |
468 |
30 |
65 |
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Size & Recommended Current Range（AC
OR DC (±) ） |
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2.6 |
3.2 |
4.0 |
5.0 |
6.0 |
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300 |
350 |
400 |
450 |
450 |
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Current (Amp) |
F |
60~80 |
110~140 |
150~190 |
190~240 |
250~320 |
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V,OH |
50~70 |
80~110 |
120~160 |
150~200 |
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