Au80Sn20 is quite strong and brittle. Works for some applications. Often used 
for hermetic soldered lid seals, but they'll make it in very thin wire solder 
if you can afford it.

Wayne

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of David Hillman
Sent: Wednesday, April 01, 2015 10:39 AM
To: [log in to unmask]
Subject: Re: [TN] HIGH Temperature Solder

Hi Jeff - here are a couple of other choices:

10Sn88Pb2Ag



1Sn97.5Pb1.5Ag



97Pb3Ag


Nothing wrong with you 90Pb10Sn either. Make sure you select a flux core that 
has good thermal stability as your soldering temperatures are much hotter than 
what you deal with when using the Sn63Pb37 alloy. Also consider what the 
cleaning (or not cleaning) issues you may have to deal with.


Dave Hillman

Rockwell Collins

[log in to unmask]

On Wed, Apr 1, 2015 at 9:20 AM, McGlaughlin, Jeffrey A < 
[log in to unmask]> wrote:

> I need to spec a high temperature wire solder for hand soldering. I
> need to have a solidus of greater than 250 degrees C. Is 90Pb10Sn my
> best/only choice or is there something else I should look at?
>
> Jeffrey McGlaughlin, C.I.D.
> Engineering Designer
> Avionics Systems & Tech Refersh
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