KW-3
KF-990/KW-3

Basicity：1.2

KF-990+KW-3 is suitable for welding 490N/mm² grade steel.

Catalog Packaging

▎Classification

AWS A 5.17/A5.17MF7A(P)2-EM12K/F49A(P)3-EM12K
JIS Z3183 S502-H
EN ISO 14171-AS42 3 AB S2Si
GB T5293 F5A3-H08MnA

▎Applications and Features

  • KF-990+KW-3 is suitable for welding 490N/mm² grade steel.
  • KF-990 is an agglomerated aluminate-basic type flux, providing good bead appearance, high current resistance, and excellent slag detachability.
  • Ideal for flat butt welding and flat fillet welding in shipbuilding, machinery, steel structures, and bridges.

▎Welding Position

焊接姿勢
焊接姿勢
焊接姿勢
焊接姿勢

▎Welding Instruction

Please refer to Appendix E.

▎Application

Ideal for flat butt welding and flat fillet welding in shipbuilding, machinery, steel structures, and bridges.

▎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
-30		70
58
PWHT497405360
-30		68
50

KUANG TAI METAL INDUSTRIAL CO., LTD.

廣泰金屬工業股份有限公司

No.20, Gongye Rd., Erzhen, Guantian Dist.
Tainan City 72042, Taiwan
TEL：886-6-6987615  FAX：886-6-6987315

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