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Solder Aluminum?


#1
I have always been told to NEVER solder aluminum . . .  I don't
know why? Perhaps, others can fill in the details. 

solder will not stick to Aluminum. There is a special product
for this looks like a silver brazing rod. a regular welding shop
can usually supply this. For some reason this also seems to be a
flea market item around here TN, OH, FL. Use with a nuetral
flame. just follow the directions.


#2

solder will not stick to Aluminum. There is a special product
for this looks like a silver brazing rod. a regular welding shop
can usually supply this. For some reason this also seems to be a
flea market item around here TN, OH, FL. Use with a nuetral
flame. just follow the directions.

Also often available at large agricultural suppliers, welding
shops and chandeleries (boating supply houses). One product for
aluminum is called “aluminu”, is heavy like lead or tin solder
but it is NOT for copper. It is often demoed at ag shows sealing
a hole burned in an aluminum can using propane bottle tourches.
If on tried to twist the repair material out of the filled hole
with a pair of vice grips, the can tears way before the filler
fails. The boat supply houses (especially ones catering to blue
water sailors) often carry a pack of different rods for joining
all sorts of metals. Some of the rods are good for joining
dissimilar metals too, all using propane torches. All of these
are really a form of soldering, not welding. I have used the
aluminu for repairing irrigation pipe with good results. Now I
use my tig welder!

Hope this helps.

John

John

John and Cynthia/MidLife Crisis Enterprises
Maiden Metals/C. T. Designs/ Bloomin’ Wax Works. etc.

PO Bx 44, Philo
CA 95466
Ph 707-895-2635 FAX 707-895-9332

The playfulness of the Universe
is reflected in the dance of the stars!


#3

The Solder material for Aluminum is basicly Zinc, maybe 100%
Zinc. The flux is Amonium chloride, The old sal ammoniac used for
tin lead solders. There maybe a little to the proprietary
Aluminum solders, but there probably isn’t anything special. Jesse