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Posted by Todd Rich on February 21, 2008, 1:14 pm
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Is there any problem using electrical solder on 304 or 316 stainless?
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Posted by Ernie Leimkuhler on February 21, 2008, 8:17 pm
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> Is there any problem using electrical solder on 304 or 316 stainless?
yes, getting it to bond.
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Posted by Todd Rich on February 21, 2008, 8:24 pm
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> > Is there any problem using electrical solder on 304 or 316 stainless?
> yes, getting it to bond.
Any suggestions? Making SCA coronets, and need to solder internally
threaded tubes to the inside. No access to TIG at the moment. Lower
temps mean less cleanup. Plus I'm looking a .100" OD tubing threaded to
2-56.
Good agressive flux?
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Posted by Martin H. Eastburn on February 21, 2008, 8:42 pm
Please log in for more thread options How about some Air conditioning brazing sticks. Lower temp and self fluxes.
Try on scrap.
Martin
Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/
Todd Rich wrote:
>
>>> Is there any problem using electrical solder on 304 or 316 stainless?
>
>> yes, getting it to bond.
>
> Any suggestions? Making SCA coronets, and need to solder internally
> threaded tubes to the inside. No access to TIG at the moment. Lower
> temps mean less cleanup. Plus I'm looking a .100" OD tubing threaded to
> 2-56.
>
> Good agressive flux?
>
>
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Posted by Ecnerwal on February 21, 2008, 9:13 pm
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> Any suggestions? Making SCA coronets, and need to solder internally
> threaded tubes to the inside. No access to TIG at the moment. Lower
> temps mean less cleanup. Plus I'm looking a .100" OD tubing threaded to
> 2-56.
>
> Good agressive flux?
Physically clean (abrasion, wire-brushing) and chemically clean (flux).
I'd actually suggest 95-5 tin antimony over electrical solder for this
job. One approach to the cleaning is to wire-brush (or scotch-brite)
with flux already in place, so the flux keeps the oxygen off the freshly
abraded area to some extent. The best low-temp soldering flux I've used
for stainless was Eutectic Castolin 157, but that was decades ago, and
products may have changed. It was a pink liquid, and was fairly nasty as
you'd expect a very aggressive flux to be. A web search says they still
make it.
Zinc chloride (generically "acid flux") is probably the most easily
available somewhat aggressive flux, and should work if you are careful.
When soldering, use a torch, and stay in the reducing region of the
flame - if you have an OA torch, use a long soft feather (rich mixture).
Good ventilation would be a smart move.
Clean up well afterwards, if you succeed. Anything nasty enough to
effectively flux stainless is not something you want to leave on the end
product.
Pewter would offer a much more period sort of product that would be also
be easier to work with, if you care about that at all.
--
Cats, coffee, chocolate...vices to live by
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