[modeleng] Re: New boiler test rules
- From: Harry Wade <hww@xxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Mon, 16 Jan 2006 15:12:48 -0600
At 08:25 PM 1/16/06 -0000, you wrote:
>As far as I know it can occur even when there is no heat applied, even in
>hot and cold water pipes as it is an electro-chemical action.
Clif, Al. etc
I've checked a couple of US mfgs (or distributors) of "phos-copper"
brazing alloys and none of those contain zinc. Copper, phosphoros, and
maybe even a bit of silver, but no zinc. However there are now a huge
number of suppliers world-wide and there's no telling what some them contain.
Regards,
Harry
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