3 Dec
1999
3 Dec
'99
10:35 a.m.
>> You're right. I meant to add that the
solder that I'm using is a very
>> low temperature solder with silver in it. 500 or 600 degrees would be too
>> cold for standard solder. I love this silver stuff, it expensive but it
>
>Eh? Silver solder is certainly very nice, flows well, bonds to a lot of
>metals,
>etc., but isn't it usually _higher_ melting point? Conventional solder
I don't know what the exact MP of this stuff is
but my iron (Weller EC
3000) is set to less than 600d and it melts and flows well at that
temperature. I don't know if the temperature control is accurate or not
though. This is 2% silver.
What is the rest of the solder? Tin, lead, something else?
"Silver solder" is an extremely vague term, covering everything from
special low melting point Indium-Silver alloys to 2% Silver/tin/lead
solders to brazing, depending on the context it is used in.
The indium-rich solders are *really* neat stuff, if you ever get a
chance to work with them. Melting temperatures down to near room temperature
are available, as well as entire series of solder alloys with graduated
melting temperatures for building up intricate assemblies. And many indium
solders will even wet and stick to *glass*.
Expensive stuff, as well!
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
3 Dec
3 Dec
12:57 p.m.
At 04:35 PM 12/3/99 -0500, someone asked:
It says Sn62 so 62% tin. I was told that it's 2% silver. I assume the
reaminer is lead. I checked Kester's website and they don't list the
stuff. I've send them a message asking for the composition and melting point.
I don't
know what the exact MP of this stuff is but my iron (Weller EC
3000) is set to less than 600d and it melts and flows well at that
temperature. I don't know if the temperature control is accurate or not
though. This is 2% silver.
What is the rest of the solder? Tin, lead, something else?
"Silver solder" is an extremely vague term, covering everything from
special low melting point Indium-Silver alloys to 2% Silver/tin/lead
solders to brazing, depending on the context it is used in.
I have some 4% silver stuff too. I think 2% and 4% are what's normally
used for electronics work.
The indium-rich solders are *really* neat stuff, if you ever get a
chance to work with them. Melting temperatures down to near room temperature
are available, as well as entire series of solder alloys with graduated
melting temperatures for building up intricate assemblies. And many indium
solders will even wet and stick to *glass*.
I just missed get a 2 pound can of 97% Indium solder paste in a scrap
place last week for $2. A friend of mine saw it first and grabbed it.
Grrrr. He said the Indium paste was great for working outside. You could
twist the wires together, drip them in the Indium paste then heat the joint
with a match to solder it.
Expensive stuff, as well!
I'm sure!
Joe
1:05 p.m.
At 04:35 PM 12/3/99 -0500, Tim asked:
What is the rest of the solder? Tin, lead, something else?
I just got an answer from Kester. Here's what they said:
"Electronic Silver Solder is a trade mark name. The alloy is Sn62Pb36Ag02
(2% Silver). The melting range is 179 - 189 deg C (354 - 372 deg F).
The rosin flux inside the wire is Kester 44. Information regarding Kester
44 cored flux can be found on www.kester.com"
As you can see, it melts at well under 500d F. BTW one the things that
I love about this stuff is that it leaves very little flux residue.
Joe
8993
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8993
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