FCAW
KFW-307

Shielding Gas: 100%CO₂ / Ar+20%CO₂
Weld metal is 20%Cr-9%Ni-6%Mn. It has good crack resistance.

▎Classification

AWS E307T1-1/4
JIS Z3323TS307-FB0
EN ISO 17633-AC1 M12 M21 Z
GB T17853E307T1

▎Applications and Features

  • Weld metal is 20%Cr-9%Ni-6%Mn.
  • It has good crack resistance.
  • This wire’s relatively high manganese content helps reduce the chance of weld metal cracking in dissimilar metal welding.

▎Welding Instruction

  • Use Ar blend with 1~2%O2 for high current, spray transfer welding.
  • Use Ar blend with 1~2%CO2 for low current, short-circuit transfer welding.
  • For other instructions, please refer to Appendix D.
  • For extra information, please refer to Appendix F

▎Applications

This wire’s relatively high manganese content helps reduce the chance of weld metal cracking in dissimilar metal welding

▎Typical Chemical Composition of Weld Metal (wt %)

CSi
Mn
PSCrNi
0.110.656.110.070.0118.858.91

▎Typical Mechanical Properties of Weld Metal

Tensile Strength
N/mm²
Yield Strength
N/mm²
Elongation
%
62041038

▎Size and Suggested Operating Range (DC+)

Diameter(mm) /
Operating range
0.80.91.01.21.41.6
Ar+1~2%CO2
60-140A
15-21V
80-160A
16-22V
100-210A
17-22V
Ar+1~2%O2
170-260A
24-30V
180-280A
24-30V
200-300A
24-30V
210-320A
24-32V
220-330A
24-32V

▎Certification