|
| |
 |
CHF101GX/CHW-S9
Flux/Wire Combination for Submerged Arc Welding |
AWS A5.23M
F8A2-EA4-A2 |
| |
|
|
Description:
CHF101GX/CHW-S9
flux/wire
combination has excellence welding performance. 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 used to weld
550-700MPa important high strength steel structures, especially for spiral
or longitudinal welded huge diameter pipe made by X65 & X70 steels. It could
be four wires welding at same time and the welding speed is 1.70m-2.00m per
minute. 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.
|
Chemical Composition (%)
|
|
|
C |
Mn |
Si |
S |
P |
Mo |
Cu |
|
Wire CHW-S9
(AWS A5.23 EA4) |
Standad |
0.05-0.17 |
1.2-1.7 |
≤0.20 |
≤0.025 |
≤0.025 |
0.45-0.65 |
0.35 |
|
Typical |
0.08 |
1.24 |
0.19 |
0.008 |
0.011 |
0.47 |
0.20 |
|
Deposited Metal |
Typical |
0.07 |
1.16 |
0.47 |
0.010 |
0.016 |
0.35 |
0.15 |
Mechanical Properties of Deposited Metal
|
|
Yield Point
ReL
(MPa) |
Tensile Strength
Rm (MPa) |
Elongation
A (%) |
Impact Value (J) |
|
-30℃ |
|
Standard |
≥470 |
550-750 |
≥20 |
≥27 |
|
Typical |
540 |
630 |
25 |
80 |
Mechanical Properties of
Deposited Metal of Welded Joint
(Base metal is X70 plate,
Typical)
|
Tensile Strength
(бb,
MPa) |
Impact Value (J) |
Cut Acreage |
Hardness (Hv) |
|
-20℃ |
(SA, %) |
Weld Metal |
HAZ |
|
650 |
150 |
80 |
240 |
230 |
|
