KT Group Members

Applications and Features

(1) KF 880 is fluoride basic agglomerated flux providing a low hydrogen weld metal.

(2) Good mechanical properties, deep penetration, good bead appearance and good slag removal.

 (3) Excellent toughness at -60℃ due to high basicity flux and Ni content.

(4) Ideal for welding carbon steel and 550N/mm² grade steel in ship-building, pressure vessel and offshore structure with single pass or multi-pass welding.

Welding Position

Welding Instruction

Please refer to Appendix E.

Typical Chemical Composition of Weld Metal (wt%)

C

Si

Mn

P

S

Ni

0.08

0.72

1.02

0.021

0.006

0.76

Typical Mechanical Properties of Weld Metal

Tensile Strength N/mm²

Yield Strength

N/mm²

Elongation

%

Charpy V-Notch

℃

J

587

508

29

-40

145

-60

105

Size and Suggested Operating Range (AC/DC+)

Diameter (mm)

2.5

3.2

4.0

4.8

Current

 (A)

F/H-fillet

250~350

300~450

400~600

500~700