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CHF103/CHW-S2
Flux/Wire Combination for Submerged Arc Welding |
AWS F6A4-EM12
GB/T F4A4-H08MnA |
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Description:
CHF103/CHW-S2
flux/wire
combination has good performance in welding. The weld metal shows a fine
appearance and the deposited metal has a satisfactory low temperature
toughness and high crack resistance. Both AC and DC can be applied, when DC,
the wire should be contacted straight polarity. It is suitable to weld
450MPa-500MPa grade structures, such as boilers, bridges, pressure vessels,
as well as LPG cylinders. Before welding, the base metal must clear away
impurities and the flux must be baked in a temperature of 300℃-350℃
for 1.5-2 hours.
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Chemical Composition (Typical, %)
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|
C |
Mn |
Si |
S |
P |
Cr |
Ni |
Cu |
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CHW-S2 (EM12)
(Standard) |
≤0.10 |
0.80-1.10 |
≤0.07 |
≤0.030 |
≤0.030 |
≤0.20 |
≤0.30 |
≤0.20 |
|
CHW-S2 (EM12)
(Typical) |
0.070 |
0.95 |
0.03 |
0.018 |
0.011 |
0.02 |
0.02 |
0.009 |
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Deposited Metal
(Typical) |
0.065 |
1.00 |
0.26 |
0.010 |
0.016 |
0.02 |
0.02 |
0.12 |
Mechanical Properties of Deposited Metal
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|
Yield Point
(бs,
MPa) |
Tensile Strength
(бb,
MPa) |
Elongation
(δ5,
%) |
Impact Value (J) |
|
0℃ |
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Standard |
≥330 |
415-550 |
≥22 |
≥27 |
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Typical
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360 |
470 |
30 |
100 |
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