KW-3
KF-990/KW-3

Basicity:1.2
Suitable for welding carbon steel and 490N/mm2 grade steel in ship-building, steel structures, bridges and pipes.

▎Classification

AWS A 5.17F7A2-EM12K/
F7P2-EM12K
JIS Z3183 S502-H
EN 14171-AS42 3 AB S2Si
GB T5293 F5A3-H08MnA

▎Applications and Features

  • General purpose flux designed to weld butt joints and both single and multiple pass fillets.
  • Good mechanical properties, deep penetration, good bead appearance, good slag removal and excellent X-ray quality welds.
  • Suitable for welding carbon steel and 490N/mm2 grade steel in ship-building, steel structures, bridges and pipes.

▎Welding Instruction

Please refer to Appendix E.

▎Application

Suitable for welding carbon steel and 490N/mm2 grade steel in ship-building, steel structures, bridges and pipes.

▎Typical Chemical Composition of Weld Metal (wt%)

CSi
Mn
PS
0.080.381.610.0150.010

▎Typical Mechanical Properties of Weld Metal

Heat treatment
condition
Tensile
N/mm2
Yield Strength
N/mm2
Elongation
%
Charpy V-Notch ℃
Charpy V-Notch J
As-welded580500290
-29
70
58
PWHT497405360
-29
68
50

▎Certification