R807 Heat-resistant Steel Electrode

R807 Heat-resistant Steel Electrode

R807
GB：E11MoVNi-15
AWS：
Current：Used for welding Cr11MoV heat-resistant steel structures below 565��, such as speed blades of high pressure steam turbines, etc.

R807

According with GB E11MoVNi-15


Introduction: R807 is a kind of Cr11MoNiV heat-resistant steel electrode with low-hydrogen natrium type coating. DCRP (Diresct Current Reversed Polarity). All-position welding. The weldments should be given preheating and postweld heat treatment according to their structural features


Uses: Used for welding Cr11MoV heat-resistant steel structures below 565℃, such as speed blades of high pressure steam turbines, etc.


Chemical Composition of Deposited Metal (%)
Chemical Composition
C
Mn
Si
S
P
Ni
Mo
Cr
V
Guarantee Value
≤0.15
0.5~1.0
≤0.50
≤0.030
≤0.035
0.6~0.9
0.60~0.90
9.50~11.50
0.2~0.4

Mechanical Properties of Deposited Metal
Test Item
Rm(MPa)
A(%)
Guarantee Value
≥730
≥15
General Result
≥750
≥18

Reference Current (DC+)
Electrode Diameter(mm)
φ2.5
φ3.2
φ4.0
φ5.0
Welding Current (A)
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.The stains on the weldments, such as rust, oil stains, moisture, etc., must be cleared away before welding.

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