Question

How much the AFS number for copper casting ?

Answer 1

Answer:

The American Foundry Society has officially withdrawn from the Advisory Committee of a copper alloy research project due to concerns over the reliability of the research. The project, Alternatives Analysis of Lead-Free Substitutes to Lead-Bearing Brass Components in the Potable Water Supply System, is being conducted by the UCLA Sustainable Technology & Policy Program, UCLA Fielding School of Public Health, under the direction of Dr. Peter Sinsheimer.

The 2011 Federal Safe Drinking Water Act requires that all cast copper components used in potable water applications to contain less than 0.25 percent lead. The research project focuses on the viability of safer alternatives to Lead-containing copper and brass components used in water applications. For the past several years, AFS and several member companies have served on the Advisory Committee for the project. However, AFS believes that the current direction of the research project may lack a sufficiently robust analysis and as a result promotes a single alloy as the best viable solution to meet the new legal requirements while discounting other equally viable alloy alternatives. Several AFS member foundries that produce copper water components previously withdrew from the project’s Advisory Committee over these same concerns. AFS continued its participation to provide the much needed third-party scientific analysis, metalcasting expertise and manufacturing perspective.

Nevertheless, recent reports indicate that the project’s conclusions may find in favor of a single commercial alloy. In AFS’s assessment, there is no one single answer to the no-lead issue. AFS concludes this in large part due to the fact that multiple no-lead alloys currently used in the marketplace meet and exceed government regulations. Any attempt to narrow the field of alloy choice could prove seriously harmful to the industry as a whole and cause the conversion of cast components to competitive manufacturing processes and materials. It may also disserve municipalities and other casting users by diminishing from the multiple viable alloy solutions to a single alloy solution.