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Description and Applications |
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H12 is a
high oxide type electrode. Slag detachability,
re-striking and bead appearance are good. For the
welding of thin plates and light steel frames. |
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Guideline in Usage |
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1. |
Electrodes
should be re-dried at 70 ～ 100℃ for 30～60
minutes before use. Excessive moisture
absorption lowers usability and may result in
some porosity. |
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2. |
For
vertical downward welding, keep an angle of
40°～80° between the base metal and the
electrode. |
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3. |
If slag
detachability is not good due to welding base
metals with narrow groove, please use lime
Titania type electrodes, ex. NK 32, G03 instead
of this electrode. |
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Typical
Chemical Composition of Weld Metal（％） |
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C |
Si |
Mn |
P |
S |
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0.08 |
0.38 |
0.39 |
0.015 |
0.010 |
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Typical Mechanical Properties of Weld Metal |
Yield Strength
N/mm2 |
Tensile Strength
N/mm2 |
Elongation
％ |
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390 |
465 |
28 |
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Size & Recommended Current Range（AC） |
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2.0 |
2.6 |
3.2 |
4.0 |
5.0 |
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300 |
350 |
350 |
400 |
450 |
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Current (Amp) |
F |
50～70 |
70～100 |
90～130 |
150～190 |
200～240 |
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V,OH |
45～60 |
60～90 |
80～100 |
140～170 |
－ |
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