TIANJIN GOLDEN BRIDGE WELDING MATERIALS GROUP CO.,LTD.
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J421X
天津市金桥焊材集团股份有限公司
J421X is rutile-based carbon steel wire that is specially designed for downward welding. It has good welding usability that enables it to operate on AC/DC and perform all-position welding, the slag removal is easy and to have a nice bead appearance. Its characteristic of easy operation gives it easy striking and re-striking.
It is suitable for welding zinc-coated steel plates and carbon steel plates that are used in shipbuilding. It is especially suitable for performing downward welding and intermittent welding on the thin plates.
Chemical Composition (%)
Chemical Composition | C | Mn | Si | S | P | Ni | Cr | Mo | V |
| Guarantee Value | ≤0.20 | ≤1.20 | ≤1.00 | ≤0.035 | ≤0.040 | ≤0.30 | ≤0.20 | ≤0.30 | ≤0.08 |
| General Result | 0.078 | 0.39 | 0.18 | 0.018 | 0.023 | 0.020 | 0.032 | 0.008 | 0.007 |
Mechanical Properties of Deposited Metal
Test Item | Rm (N/mm2) | Rel (N/mm2) | A (%) | KV2(J) 0℃ |
| Guarantee Value | ≥430 | ≥330 | ≥16 | — |
| General Result | 485 | 390 | 27 | 76 |
Reference Current (AC/DC)
Diameter | Φ2.0 | Φ2.5 | Φ3.2 | Φ4.0 | Φ5.0 |
| Amperage | 40 ~ 70 | 50 ~ 90 | 90 ~ 130 | 150-210 | 170 ~ 230 |
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