Also, there are things like stainless steel, and aluminium that don't
like regular 60/40 solder-- however silver solder will solder to
stainless antenna rods (repair antenna whips, ect). and aluminium
is easy to solder to, but consider : 1) that aluminium oxide WON'T allow
solder to adhear to it, and that : 2) aluminium oxidizes almost
immedietly ! The way to solder to aluminium without special solders/
fluxes is to scrape the surface, and then immediatly apply hot iron and
solder. Then solder will adhear to it! As a side note, concerning
the oxidation of aluminium, consider that the silver powder in fireworks
is powdered aluminium! Have a friend , whose dad told of his experience
with it (powdered)-- was used to make aluminium based paint- he was told
by his boss to get rid of it-- threw it into an incinerator-- and,
KABKOOIE ! as info, Jim NN7K


Isaac Wingfield wrote:

Silver-bearing solder is for use with silver plated terminal strips
(such as Tektronix used to use); silver in the solder prevents the
silver on the terminals from being dissolved by the solder and ruined.

Isaac