CHT711

Flux Cored Wire for High Tensile Steels

CHT711 shows excellent welding performance and higher efficiency in welding. Vertical down welding could be applied. It is widely used in structures fabricated by equivalent mild steels and 490MPa grade high tensile strength steels, such as ships, pressure vessels, machineries, petrochemical industry equipments, bridges and so on.

More Information

Type of Flux: Rutile
Welding Position: F, H, HF, OH, V, VD
Type of Current: DCEP

Chemical Composition of Deposited Metal (%)

 

-
Standard
Typical
C
≤0.18
0.055
MN
≤1.75
1.35
Si
≤0.90
0.40
S
≤0.03
0.009
P
≤0.03
0.018

 

Mechanical Properties of Deposited Metal (AW)

 

-
Standard
Typical
Yield Strength
ReH (MPa)
≥400
440
Tensile Strength
Rm (MPa)
≥480
535
Elongation
A4 (%)
≥22
32
Impact Value (J)
-20• •
≥27
110
Shield Gas
CO2
purity≥99.98%

 

The standard of mechanical properties conforms to shipping institutions and the certificate of inspection would follow it unless the purchaser has special requirement.

X-ray radiographic inspection: Grade • •

Diffusible hydrogen in deposited metal: ≤10ml/100g (mercury process)

Recommended Current (DC+)

 

Diameter (mm)
Current (A)
F
HF
V, OH
H
VD
1.0
90-220
90-200
90-180
90-200
90-200
1.2
120-300
120-280
120-260
120-280
200-280
1.4
150-380
150-320
150-270
150-320
220-300
1.6
180-430
180-380
180-280
180-330
250-300

 

Approvals

 

Institute
Grade
CCS
3YSMH10
LR
3YS, H10
3YM, H10
ABS
3YSAH10
GL
3YH10S
BV
SA3YMH10
DNV
• •YMS(H10)
NK
KSW53G(C) H10
KSW53G(C) H10
BKI
3YH10S
KR
3YSMG(C1)H10
CWB
E491T-9-H8

 

Notice:

  1. The flow rate of shield gas should within 20L-25L/min in welding.
  2. The wire extention should be 15mm-25mm.
  3. The surfaces to be welded must be cleaned away impurities of oil contamination, rust, moisture and so on.
  4. The welding conditions mentioned above for reference only and it is better to do a welding procedure qualification according to project before put it into formal welding.