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Aluminum Fluxes

| The
joining of aluminum base metals has been an area of expertise
at Fusion since the development of the first open flame brazing
paste over two decades ago. Both brazing and soldering fluxes
have been developed to join the most popular aluminum base
metals. |
Corrosive
Fluxes:
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NDA
Most potent fluxing action (contains halides) in
the corrosive group. Affords the longest flux life for extended
heating cycles. Flux residues are completely water washable.
Pair with 1070, 1040, 1022, and A071 filler metals.
NPA
Similar to NDA with milder, more controlled fluxing,
which reduces base metal erosion and etching. Recommended
for thin walled parts; water washable. Pair with 1070, 1040,
1022, and A071 filler metals.
NTA
Similar to NDA with controlled fluxing and non-slumping
characteristics. Creamy and smooth appearance due to fine
mesh filler metals. Recommended for small diameter striping
operations; water washable. Pair with 1070, 1040, 1022 and
A071 filler metals.
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Non-Corrosive
Fluxes:
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TNC
Chloride-free flux that does not require post cleaning
of the joint area. Flux residue has no detrimental effect
of the joint service life; not water washable. Pair with
1070, 1040, 1022, and A071 filler metals.
BNC
Similar to TNC with higher temperature fluxing and
reduced (visible) post brazing residue; not water washable.
Pair with 1070 and 1040 filler metals.
KNC
For use with lower melt point aluminum base metals
like 6061 and 6262. Also suitable with 6063 and 3003 base
metals; not water washable. Pair with 1040, 1022, and A071
filler metals.
GNC
- Similar to TNC; specially
formulated to braze 5000 series aluminum and other magnesium-containing
alloys. Also suitable for commonly used alloys; not water
washable. Pair with 1070, 1040, 1022, and A071 filler
metals.
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Furnace
Brazing Fluxes:
| JNC
A non-corrosive formulation that contains a fast drying
binder, suitable for furnace brazing operations. Pair with
1070, 1040, A070, A071 filler metals.
FAB
Similar to JNC with reduced post-brazing residue.
Pair with fine mesh 1070, 1040, 1022, and A071 filler metals.
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Non-Corrosive
Flux: ASN
| ASN
A non-corrosive solder flux recommended for applications
such as aluminum heat exchangers, inlet/outlet tube assemblies,
condenser "piccolo" joints, and other assemblies
consisting of 6061 and 6262 base metals. The flux residue
left after soldering is non-corrosive, thus no flux removal
is required. Pair with solder metals 738, A031, A131,
845, and 892 |
Melting
Range for Popular Aluminum Base Metals
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Base
Metal
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Melting
Range
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1000
Series
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1190-1215°F
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643-657°C
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3003
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1190-1210°F
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643-654°C
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5005
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1170-1210°F
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632-654°C
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6061
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1080-1200°F
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582-649°C
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6063
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1140-1210°F
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616-654°C
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6262
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1078-1204°F
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582-652°C
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7072
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1195-1215°F
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646-657°C
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