J507MoW
Description:
J507Ni is low hydrogen sodium type low alloy steel electrodes, using DC reverse, you can all-position welding, with lower diffusion of hydrogen content and excellent low temperature impact toughness.
use:
For medium carbon steel, low temperature steel pressure vessel welding, such as 16MnDR and so on.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Ni |
guarantee value | ≤0.10 | ≤1.60 | ≤0.90 | ≤0.035 | ≤0.035 | 1.00 ~ 2.00 |
Example value | 0.071 | 1.05 | 0.50 | 0.006 | 0.014 | 1.30 |
Deposited metal mechanical properties (620 ℃ × 1h)
Pilot projects | Rm (N / mm 2 ) | ReL / Rp0.2 (N / mm 2 ) | A (%) | KV 2 (J) |
-40 ℃ |
.guarantee value | ≥490 | ≥400 | ≥20 | ≥27 |
Example value | 575 | 465 | 30 | 167 |
X-ray inspection requirements:
I level
Reference current (DC + )
Electrode diameter (mm) | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 90 ~ 120 | 120 ~ 180 | 160 ~ 210 |
Precautions:
⒈ electrode before going through about 350 ℃ baking 1h, with the use of take.
⒉ welding before welding parts must be removed rust, oil, water and other impurities.
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