Yup! I think it's banned everywhere in the developed world, but what
about the third world? (where is the second one?) Same with sealing
cans. It's a lot easier to plumb with an Sn40Pb60, as you can wipe the
joint with a moleskin, especially if the pipes are lead.
Brian
Bev Christian wrote:
> Brian,
> Still using lead in plumbing solder? This was banned in Canada after
> lead levels in drinking water were found to be high in drinking
> fountains in schools, especially in areas with soft water. In schools
> with old plumbing janitors are required to flush the lines before the
> children come to school. And, no, I do not remember what the actual
> levels found were.
> Bev
> RIM
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Brian Ellis
> Sent: December 15, 2006 4:32 AM
> To: [log in to unmask]
> Subject: Re: [TN] Need some help please - really quite urgent.
>
> http://www.lme.co.uk/lead_industryusage.asp
>
> World production: 6,701,600 tonnes per annum (2001)
> Europe: 28% = 1,876,450 tonnes
> Alloys = 1% = 18,765 tonnes
>
> Alloys include solder, brass and bronze, foil, terne metal, type metal,
> wire, and other undistributed consumption. (my note: also antifriction
> bearing metals)
> (http://minerals.usgs.gov/minerals/pubs/commodity/lead/lead_mcs06.pdf)
>
> http://www.paceworldwide.com/leadFree.asp states "The electronic
> industry uses less than 0.5% of lead in the production of PCB's and
> components" (probably very high estimate). This would offer ~9,000
> tonnes.
>
> http://www.avxcorp.com/docs/techinfo/leadfr.pdf states "Despite the fact
>
> that lead containing solders in electronic assemblies account for only
> 0.49% of world lead consumption". This figure is unsubstantiated, but
> confirms the previous one.
>
> I've not found any substantiated data, but it is probable that the
> 0.49-0.5% data relates to all solder, not just used in the electronics
> industry, as the total of alloys is 1%, according to the LME. Despite
> restrictions in many countries, lead solders are still used for plumbing
>
> and in the canning industry, as well as for high-melting-point solders,
> and for general metal joining. It is probable that Inge's 0.1% is too
> low across Europe (Denmark is a pioneer country for LF soldering). My
> best estimate would be 0.2 - 0.35% or 3,750 to 6,500 tonnes with
> extremes of 1,875 and 9,000 tonnes.
>
> Hope this helps!
>
> Brian
>
> John Burke wrote:
>> I have been written to by the Oko institute in connection with my
> exemption
>> request #15
>>
>>
>>
>> They basically want to know how much lead in solder is used in Europe
> in
>> conventional solder. (Don't they know??)
>>
>>
>>
>> I had a response from a leading member of the International Research
>> Association of the "other" material used in solder telling me to
> contact the
>> lead association for the data - hilarious.
>>
>>
>>
>> Anyway, I believe I have a number for the amount of solder used
> globally
>> from a creditable source, what I need now is a SWAG on the percentage
> of
>> electronics used (note used not made!) in Europe versus the rest of
> the
>> world so I can give the Oko institute the data they have requested.
>>
>>
>>
>> Help please, I have until Friday to come up with the data
>>
>>
>>
>>
>>
>>
>>
>> John Burke
>>
>>
>>
>> (408) 515 4992
>>
>>
>>
>>
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