J427Ni
Description:
J421X titanium oxide type coating, vertical welding carbon steel electrode. AC and DC dual-use, can be all-position welding. Good operating performance, arc ignition and re-arc easy, stable arc; weld appearance, easy slag removal.
use:
Suitable for welding general marine carbon steel and galvanized steel, especially for sheet vertical down welding and intermittent welding.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Ni | Cr | Mo | V |
guarantee value | ≤0.20 | ≤1.20 | ≤1.00 | ≤0.035 | ≤0.040 | ≤0.20 | ≤0.30 | ≤0.30 | ≤0.08 |
Example value | 0.080 | 0.40 | 0.22 | 0.014 | 0.022 | 0.018 | 0.026 | 0.008 | 0.007 |
Deposited metal mechanical properties (620 ℃ × 1h)
Pilot projects | Rm (N / mm 2 ) | ReL (N / mm 2 ) | A (%) | KV 2 (J) |
0 ° C |
guarantee value | ≥430 | ≥330 | ≥16 | - |
Example value | 485 | 390 | 27 | 76 |
X-ray inspection:
Ⅱ level
Reference current (AC, DC)
Electrode diameter (mm) | φ2.5 | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 50 ~ 100 | 90 ~ 130 | 150 ~ 210 | 170 ~ 230 |
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