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CHF103/CHW-S2
Flux/Wire Combination for Submerged Arc Welding
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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
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Mn
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Si
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S
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P
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Cr
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Ni
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Cu
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CHW-S2 (EM12)
(Standard)
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≤0.10
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0.80-1.10
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≤0.07
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≤0.030
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≤0.030
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≤0.20
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≤0.30
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≤0.20
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CHW-S2 (EM12)
(Typical)
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0.070
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0.95
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0.03
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0.018
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0.011
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0.02
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0.02
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0.009
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Deposited Metal
(Typical)
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0.065
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1.00
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0.26
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0.010
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0.016
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0.02
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0.02
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0.12
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Mechanical Properties of Deposited Metal
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Yield Point
(бs,
MPa)
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Tensile Strength
(бb,
MPa)
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Elongation
(δ5,
%)
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Impact Value (J)
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0℃
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Standard
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≥330
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415-550
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≥22
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≥27
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Typical
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360
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470
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30
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100
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