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CHF101/CHW-S12
Flux/Wire Combination for Submerged Arc Welding |
AWS A5.17 F7A4-EM12K
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Description:
CHF101/CHW-S12
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, ships 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 1-2 hours.
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Chemical Composition (%)
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C |
Mn |
Si |
S |
P |
Cr |
Ni |
Cu |
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CHW-S12 (EM12k) |
Standard |
0.05-0.15 |
0.80-1.25 |
0.10-0.35 |
≤0.030 |
≤0.030 |
— |
— |
≤0.35 |
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Typical |
0.080 |
1.06 |
0.22 |
0.014 |
0.016 |
0.025 |
0.026 |
0.010 |
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Deposited Metal (Typical) |
0.060 |
1.30 |
0.30 |
0.010 |
0.020 |
0.020 |
0.010 |
0.050 |
Mechanical Properties of Deposited Metal
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Yield Point
ReH
(MPa) |
Tensile Strength
Rm (MPa) |
Elongation
A5 (%) |
Impact Value (J) |
|
-20℃ |
-40℃ |
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Standard |
≥400 |
480-660 |
≥22 |
≥34 |
≥27 |
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Typical |
420 |
510 |
31 |
145 |
110 |
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Approvals |
LR |
ABS |
GL |
BV |
DNV |
NK |
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Grade |
3M, 3YM |
3YM |
3YM |
A3YM |
ⅢYM |
KAW53M |
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