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

From: John Chris Wren <jcwren_at_jcwren.com>
Date: Tue Apr 2 14:26:50 2002

        Cadmium?!? Say what? It's tin-antimony and tin-silver.
http://environment.copper.org/e_p_lead.htm The deal is they're cadmium-FREE
solders.
http://misspiggy.gsfc.nasa.gov/ctre/act/techdocs/solder/leadfree.htm

        --John

> -----Original Message-----
> From: owner-classiccmp_at_classiccmp.org
> [mailto:owner-classiccmp_at_classiccmp.org]On Behalf Of Carl Lowenstein
> Sent: Tuesday, April 02, 2002 13:37 PM
> To: classiccmp_at_classiccmp.org
> Subject: Re: Soldering and other skills (was Re: QL-Quality (Was: ZX-81
> Question))
>
>
> > From: "Allison" <ajp166_at_bellatlantic.net>
> > To: <classiccmp_at_classiccmp.org>
> > Subject: Re: Soldering and other skills (was Re: QL-Quality
> (Was: ZX-81 Question))
> > Date: Mon, 1 Apr 2002 08:40:54 -0500
> > Content-Transfer-Encoding: 7bit
> >
> > 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}.
>
> But the replacement for lead in plumber's solder is cadmium. And cadmium
> is a pretty hazardous material itself.
>
> carl
> --
> carl lowenstein marine physical lab u.c. san diego
> clowenstein_at_ucsd.edu
Received on Tue Apr 02 2002 - 14:26:50 BST

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