Flux

MAXFLUX SAF -704

AWS: SFA

EN ISO CODE:

Maxflux SAF-704 is a fluoride-basic type flux suitable to weld with composite SAW wires. The flux is neutral in nature and is also suitable with all HF (Hard Facing) class wires. The deposited weld metal has low diffusible hydrogen content and crack resistant during hard surfacing.

Maxflux SAF-704 flux suited with composite SAW wires. With ECNi2 wire the weld metal gives excellent mechanical and charpy V notch impact properties (40-70J at - 51ºC). For hard surfacing application on steel mill rolls, the flux is suitable with Maxfil HF-20,Maxfil HF-30,Maxfil HF-45 &Maxfil HF-55wires depending upon the composition & hardness requirement. Recommended welding procedure shall be followed as in our product literature

Approvals

CHEMICAL COMPOSITION OF ALL WELD METAL (%)

WITH SAW WIRE

Elements

AUTOTHERME GRADE-HC

Typical

0.05-0.10

1.0-1.6

0.30-0.70

2.0-2.9

MAXFIL HF-20

Typical

0.08 MAX

0.50-1.20

0.60 MAX

1.2-2.0

2.0-3.0

0.40-0.80

0.06-0.15

MAXFIL HF-30

Typical

0.20 MAX

0.50-1.20

0.60 MAX

4.0-8.0

2.0-4.0

0.40-0.80

0.06-0.15

MAXFIL HF-45

Typical

0.10-0.30

0.80-1.60

0.80 MAX

11.0-14.0

3.0-4.5

0.40-0.80

0.06-0.15

MAXFIL HF-55

Typical

0.30-0.60

1.0-2.0

0.80 MAX

4.0-6.0

0.50-1.00

0.06-0.15

MECHANICAL PROPERTIES OF ALL WELD METAL

WITH SAW WIRE	UTS	0.2% YS	% EI	Hardness 3L
	(Mpa)	(Mpa)	(L=4d)	(HRC)
AUTOTHERME GRADE-HC	550-700	470-600	24.0-27.0	-
MAXFIL HF-20	-	-	-	23-28
MAXFIL HF-30	-	-	-	30-40
MAXFIL HF-45	-	-	-	42-48
MAXFIL HF-55	-	-	-	52-54