R817 Heat-resistant Steel Electrode

R817 Heat-resistant Steel Electrode

R817
GB：E11MoVNiW-15
AWS：
Current：Used for welding Cr11MoNiVW steel structures below 580��, such as refractory steel superheaters, steam pipes, etc.

R817

According with GB E11MoVNiW-15


Introduction: R817 is a kind of Cr11MoNiVW 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 Cr11MoNiVW steel structures below 580℃, such as refractory steel superheaters, steam pipes, etc.


Chemical Composition of Deposited Metal (%)
Chemical Composition
C
Mn
Si
S
P
Ni
Mo
Cr
V
W
Guarantee Value
≤0.19
0.50~1.00
≤0.50
≤0.030
≤0.035
0.40~1.10
0.80~1.10
9.50~12.00
0.20~0.40
0.4~0.7

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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