The lead free solder movement - silver use MUST increase, but none of the demand figures that I have seen seem to have considered it.
NEMI Group Recommends Tin/Silver/Copper Alloy as Industry Standard for Lead-Free Solder Reflow in Board Assemblies
nemi.org
Silver* Lead Free Plumbing Solder
A unique patented alloy of tin, silver, copper, and bismuth.
Meets the requirements of the Safe Drinking Water Act for use on copper potable water lines.
oatey.com
Lead free solder - companies who supply
solderworld.com
NEMI backs lead-free solder alloy for standard
eet.com
Lead-Free Solder
Tin-lead solder is the most commonly used solder for electronic assembly. However, there are concerns about the use of lead due to its adverse effects on human health. Lead is linked to health hazards such as disorders of the nervous and reproductive systems and delayed neurological and physical development. Lead poisoning is particularly damaging to the neurological development of young children.
rayprasad.com
Remarks on Lead-Free Stained Glass Soldering
I'm no health professional, so I won't begin to describe the health risks associated with lead. All I'll say is that the risks are well known, very serious and totally avoidable. My stained glass work is exclusively lead-free........
My Favorite Solder: IA-423
After weeks of searching around (quite a while ago) I found one, not yet readily available through stained glass suppliers, that is made primarily for the electronics and automotive industries. It's called IA-423 from Johnson Manufacturing. It's a relatively recent eutectic alloy (93.6% Tin, 4.7% Silver, 1.7% Copper)
elvesofester.com
Legislation pages
lead-free.org
There now appears to be general agreement, certainly within UK industry, on the
acceptability of Sn-Ag-Cu as a replacement for Sn-Pb.
lead-free.org
AMES LABORATORY SIGNS INTERNATIONAL LICENSING AGREEMENT ON LEAD-FREE SOLDER
ameslab.gov
Safer Solder Swap Suggestion: Lead-free Solder
Special, non-lead alloys are available to eliminate the hazards of lead in the workplace. A 97/3, 97 % tin and 3% silver, alloy is available at electronic parts stores. Contact ORS for disposal of unwanted 65/35 lead solder.
acns.nwu.edu
DIRECTIVE OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL
on the restriction of the use of certain hazardous substances in electrical and electronic
equipment
lead-free.org
Lead-free Solders for Drinking Water Plumbing Systems
Reasons For The Ban
The basis for the public health concern is the maximum contaminant level (MCL) for lead in drinking water established by the U.S. Environmental Protection Agency (EPA).
Cost Considerations
The alternative solders cost somewhat more per pound than 50-50. Offsetting this higher material cost is the fact that 20 to 25% more joints can be made per pound of tin-antimony and tin-silver solders because they are lighter in weight (lower density) than 50-50. While the cost of tin-antimony solders is almost twice that of 50-50, and tin-silver solders are about four times as expensive, it should be appreciated that the average dwelling unit requires only one or two pounds of solder to install its potable water system. The increased cost of the alternative solder is thus completely insignificant in the cost of a home and the joints made with it are stronger, safer at elevated temperature and assuredly lead-free.
environment.copper.org
Lead-Free Solder Leads To "Greener" IC Packaging.(Company Business and Marketing)
Author/s: David Morrison
Issue: March 6, 2000
In an ongoing effort to replace toxic metals used in semiconductor manufacturing, STMicroelectronics, Lexington, Mass., has developed ball-gridarray (BGA) and microBGA packages that are lead-free. These packages incorporate solder balls formed from a combination of tin, silver, and copper, rather than the traditional tin-lead aloy. The "ecoBGA" is a product of the company's ECOPACK program--launched in 1998--to develop environmentally friendly manufacturing processes ahead of any legal mandates from regulatory agencies.
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