SMAW
LB-78VS
Stick electrode
| Features: | - Suitable for butt welding of pipes
- Excellent usability in vertical downward welding
- Good mechanical properties
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| Classification: | AWS A5.1 E7048 |
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| Redrying Conditions: | 350-400°Cx1h |
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| Identification color: | 1st Orange, 2nd Black |
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| Polarity: | AC, DCEP |
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Welding Positions:
Packaging data
| φ mm | Length mm | kg/pack | kg/carton | g/piece | carton mm |
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| 3.2 | 350 | 5 | 20 | 33 | 170W, 110H, 380L |
| 4.0 | 400 | 5 | 20 | 56 | 170W, 110H, 430L |
Composition (all-weld metal mass %)
| | Typical (AC) | Guarantya |
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| C | 0.06 | 0.15 |
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| Si | 0.56 | 0.90 |
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| Mn | 1.18 | 1.60 |
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| P | 0.012 | 0.035 |
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| S | 0.005 | 0.035 |
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| Ni | 0.01 | 0.30 |
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| Cr | 0.03 | 0.20 |
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| Mo | 0.01 | 0.30 |
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| V | <0.01 | 0.08 |
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| Othersb | 1.23 | 1.75 |
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Note: aSingle values are maximium.
bCombined Limit for Mn+Ni+Cr+Mo+V
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Welding parameters (A)
| φ mm | 1F, 1G, 2G | 3G uphill, 4G | 3G downhill |
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| 3.2 | 80-140 | 80-120 | 80-140 |
| 4.0 | 130-210 | 110-160 | 130-210 |
All-weld mechanical properties
| | Typical (AC) | Guaranty |
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| 0.2%YS (MPa) | 490 | 400min. |
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| TS (MPa) | 580 | 483min. |
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| EI on 4d (%) | 30 | 22min. |
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| IV -29°C (J) | 100 | 27min. |
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