W707 low temperature steel electrode ,W707 low temperature steel electrode manufacturer. - Hi-Sea Group 
W707 low temperature steel electrode

W707 low temperature steel electrode

W707
GB:
AWS:
Current:Used for welding low temperature steel structures under -70��, such as 09Mn2V, 09MnTiCuRe, etc.

W707


Introduction: W707 is a kind of low temperature steel electrode with low-hydrogen natrium type coating. DCRP (Direct Current Reversed Polarity). All-position welding. The weld metal still has excellent impact toughness under -70℃.


Uses: Used for welding low temperature steel structures under -70℃, such as 09Mn2V, 09MnTiCuRe, etc.


Chemical Composition of Deposited Metal (%)
Chemical Composition
C
Mn
Si
S
P
Cu
Guarantee Value
≤0.10
≈2.0
≈0.2
≤0.035
≤0.035
≈0.7

Mechanical Properties of Deposited Metal
Test Item
Rm(MPa)
ReL或Rp0.2(Mpa)
A(%)
KV2(J)
Guarantee Value
≥490
≥18
≥27(-70℃)

Diffusible Hydrogen Content in Deposited Metal: ≤6.0ml/100g(Glycerine Hydrogen Test)

X-ray Radiographic Inspection: ⅠDegree

Reference Current (DC+)
Electrode Diameter(mm)
φ2.0
φ2.5
φ3.2
φ4.0
φ5.0
Welding Current (A)
40~70
60~90
90~120
140~180
170~210

Instructions:
1.The electrodes must be baked under about 350℃ for an hour before welding, and used as soon as baking is completed.
2.When welding, middle and little criteria had better be adopted, as well as multi-layer and multi-pass welding, and the layer temperature should be controlled below 200℃.

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