J421X
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 |
