Soldering and other skills (was Re: QL-Quality (Was: ZX-81 Question))

From: Allison <ajp166_at_bellatlantic.net>
Date: Mon Apr 1 07:40:54 2002

From: Chad Fernandez <fernande_at_internet1.net>
>How much lead does solder dor electronics contain? I thought only
>solder for pipes contained lead?

The best alloy is 63/37 63%lead 37% tin. Common variety is 60/40.

The lead is not a hazard by inhalation though some of the fluxes can be.
It is a contact hazard over time as it can be transfered from the skin to
lips
and injested. Solution, wash hands after using.

Solder for pipes, by mandate has been below 5% lead for years, it
used to be mostly lead {90/10}.

>>>It's true. The mercury was used to stiffen the brims. Chronic hat
wearers
>>>also had problems.

Lead is bad as it's water soluable if the PH is right. Mercury is nastier
as
it has a low boiling temperature and combines with Oxygen readily.

Allison
Received on Mon Apr 01 2002 - 07:40:54 BST