[modeleng] Silver solderering leaded materials

I thought that leaded bronzes silver soldered together fine. Is it 
possible that it is something else that is common to the leaded steels 
that is actually preventing them from being silver soldered?

Yours,


Rich.

On Sun, 30 Oct 2005, Pendragon wrote:

> Tony
>
> The reason for my comments are as follows.  Some years ago I attempted =
> to
> braze some crossheads together, after ten pairs had failed I realised =
> the
> material contained lead.  The same thing hapenend more recently when I
> attempted to braze some hornblocks together.  When completed the brazed
> joint looks okay but does not have much mechanical strength and soon =
> fall
> apart.
> Don't know why this is but would like to find out.
> So frustrating is this problem that I now when come across material that
> will take silver solder that I mark it 'Braze friendly or BF'
>
> Regards IP
>
>
>
> "Life should NOT be a journey to the grave with the intention of =
> arriving
> safely in an attractive and well preserved body, but rather to skid in
> sideways, Champagne in one hand - strawberries in the other,=20
> body thoroughly used up, totally worn out and screaming WOO HOO - What a
> Ride!"=20
> =20
> "Never drive faster than your gaurdian angel can fly"
> =20
> Priest & Sons Model Engineers
> http://www.kinvermes.pwp.blueyonder.co.uk/p1.htm
>
>
> -----Original Message-----
> From: modeleng-bounce@xxxxxxxxxxxxx =
> [mailto:modeleng-bounce@xxxxxxxxxxxxx]
> On Behalf Of Tony Wells
> Sent: 29 October 2005 22:06
> To: modeleng@xxxxxxxxxxxxx
> Subject: [modeleng] Re: Free Cutting Steel
>
>
> An interesting comment IP! Lead is in ordinary solder and silver is =
> often=20
> found in lead ore (with lead being a by product of the silver refining), =
> so=20
> I would have thought that silver soldering material with traces of lead=20
> would not present any problems. I also thought that free machining EN1A=20
> steel only contained minute traces of lead, "just enough" as it were, =
> but=20
> would these be enough to cause it all not to work please? My reason for=20
> asking these questions is that I was going to silver solder some t/c =
> tips on
>
> to free machining steel tools, for my wood turning.
>
> Tony.
>
>
> ----- Original Message -----=20
> From: "Pendragon" <idpriest@xxxxxxxxxxxxxxxx>
> To: <modeleng@xxxxxxxxxxxxx>
> Sent: Saturday, October 29, 2005 9:49 PM
> Subject: [modeleng] Re: Free Cutting Steel
>
>
>> Gents,
>>
>> Material with lead in it cannot be silver soldered, not easily anyway, =
>
>> =3D don't know if its possible to weld though.
>>
>> Regards IP
>
>
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