On Wed, 28 Dec 2011 11:46:37 +0000, Tim Watts
wrote:

Frank Erskine wrote:

On Wed, 28 Dec 2011 08:51:49 +0000, wrote:

On Tue, 27 Dec 2011 23:28:46 +0000,
(D.M. Procida) wrote:

wrote:

Reflow the joints with some good honest 60/40 Lead based solder (still
legal for repairs) and a decent temperature controlled soldering iron.

Is there any problem mixing lead and lead-free solder?

Daniele


Depends on the alloy. Some of the Lead-free solders currently
available contain high quantities of Zinc. While they flow and melt
like 60/40, they are prone to corrosion.

Other mixes don't perform well at low temperatures (especially high
Tin alloys) or under vibration. Probably OK for most domestic
applications, not good at all for aerospace.

Just curious - what type of solder (if any) IS used in the aerospace
industry these days?

I think I've got enough tin/lead (grade K) to see me out anyway :-)


Leaded I would imagine, seeing as the automotive industry is exempted from
the lead free requirement, so moreso the aerospace industry.

Yes, and for products involved in the safety of the realm.

Regards
JonH