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Description and Applications |
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Used for welding 0.50%
Cr-0.50% Mo or equivalent steels for piping,
boilers and heat-exchanger. Excellent
mechanical properties and crack resistance. |
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Guideline in Usage |
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1. |
Electrode should be re-dried
at 350
～
400℃ for 60 minutes. |
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2. |
Preheated and interposes temperature should be
controlled at 100 ～ 200℃ during welding. Stress
relieved heat treatment at 605 ~ 635℃ for one
hour. |
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3. |
Keep the arc as short as possible. |
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Typical
Chemical Composition of Weld Metal（％） |
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C |
Si |
Mn |
P |
S |
Mo |
Cr |
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0.07 |
0.33 |
0.67 |
0.021 |
0.007 |
0.55 |
0.48 |
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Typical Mechanical Properties of Weld Metal |
Yield Strength
N/mm2 |
Tensile Strength
N/mm2 |
Elongation
％ |
Post heat Treatment |
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514 |
624 |
26 |
620℃ × 1 hr. |
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Size & Recommended Current Range（AC
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2.6 |
3.2 |
4.0 |
4.8 |
5.0 |
6.0 |
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300 |
350 |
350
400 |
350 |
450 |
450 |
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Current (Amp) |
F |
60~90 |
90~140 |
150~180 |
180~220 |
180~230 |
240~300 |
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V,OH |
50~80 |
80~120 |
120~150 |
140~170 |
240~300 |
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