W807 E5515-G low temperature steel weldig rods

W807 E5515-G low temperature steel weldig rods

W807
GB：E5515-G
AWS：
Current：Used for welding 1.5Ni steel structures under -80��.
Main Applications：

W807

According with GB E5515-G


Introduction: W807 is a kind of low temperature steel electrode containing Ni with low-hydrogen natrium type coating. DCRP (Direct Current Reversed Polarity). All-position welding. The weld metal still has excellent impact toughness under -80℃.


Uses: Used for welding 1.5Ni steel structures under -80℃.


Chemical Composition of Deposited Metal (%)
Chemical Composition
C
Mn
Si
S
P
Ni
Guarantee Value
≤0.07
1.1~1.4
≤0.50
≤0.035
≤0.035
1.20~1.60

Mechanical Properties of Deposited Metal
Test Item
Rm(MPa)
ReL或Rp0.2(Mpa)
A(%)
KV2(J)
Guarantee Value
≥540
≥440
≥22
≥27(-80℃)

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
90~130
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℃.
3.The stains on the weldments, such as rust, oil stains, moisture, etc., must be cleared away before welding.

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