J421Fe16
Description:
J506Fe-1 is a low hydrogen potassium type iron electrode carbon steel electrode. AC and DC dual-use, can be all-position welding. As a result of adding more alloying elements, has good ductility and low temperature impact toughness, good welding process performance, stable arc, less spatter, easy slag removal, high deposition efficiency.
use:
For offshore oil platforms, offshore vessels and other carbon steel and low alloy steel welding.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Ni | Cr | Mo | V |
guarantee value | ≤0.15 | ≤1.60 | ≤0.90 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.20 | ≤0.30 | ≤0.08 |
Example value | 0.069 | 1.20 | 0.36 | 0.006 | 0.016 | 0.26 | 0.031 | 0.008 | 0.017 |
Deposited metal mechanical properties
Pilot projects | Rm (N / mm 2 ) | ReL (N / mm 2 ) | A (%) | KV 2 (J) |
-40 ℃ | -45 ° C |
guarantee value | ≥490 | ≥400 | ≥20 | ≥47 | ≥27 |
Example value | 535 | 440 | 33 | 190 | 184 |
X-ray inspection:
Ⅰ level
Reference current (AC, DC + )
Electrode diameter (mm) | φ2.5 | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 60 ~ 100 | 90 ~ 140 | 160 ~ 210 | 180 ~ 240 |
Precautions:
⒈ welding electrode to be baked by 350 ℃ 1h, with baking with the use.
⒉ weld before welding must be removed rust, oil, water and other impurities.
⒊ welding operation required to use a short arc to narrow the welding is appropriate.
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