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 May 2007
Tech News

Interlaboratory Study Program Assists Committee A05 with Precision and Bias Testing

ASTM International Subcommittee A05.07 on Methods of Testing completed an interlaboratory study, ILS #31, for ASTM A 90/A 90M, Standard Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings, in late 2006. The subcommittee, which is part of Committee A05 on Metallic-Coated Iron and Steel Products, received assistance in the study from ASTM’s Interlaboratory Study Program, which is managed by Phillip Godorov.

Participants in Interlaboratory Study #31 for A 90/A 90M, Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings, receive certificates for their contributions. Shown, from left, are: Herb Koch, Harris Steel Company; Richard Nester, Wheeling-Nisshin; Shannon Jackson, Stelco, Inc.; Rob Puccia, Mittal Steel USA; Matt McCosby, USS; Brandon Bokhart, Whirlpool Corporation; and Garly Sett, Dofasco, Inc. Also participating in the study, but not shown, are: Stan Griffin, Steel Dynamics; Chris Phipps, Worthington Industries; Scott Schuldt, Mittal Steel USA; Margaret Farabaugh, The Techs; Marshall Roman, USS Pro-Tec Coating; and Kerim Cetin, USS Double Eagle Steel Coating Company.

Herb Koch, A05.07 member and quality manager, Harris Steel Company, says that it was easy to coordinate the interlaboratory study through the ILS program. The committee approved the interlaboratory study and a study coordinator was determined. Committee members then worked with the ILS program staff to secure sufficient volunteer testing facilities. “Finally, we distributed samples and let the testers do what they routinely do,” says Koch, who also notes that the ILS program provided resources to pay for the shipping of the samples and assisted with the statistical number crunching. The subcommittee received results in a timely manner.

The Interlaboratory Study Program at ASTM International was started in 2005 with a goal of providing whatever assistance is necessary to committees developing precision and bias statements for ASTM test methods. //


Technical Information: Herbert Koch, Harris Steel Company, Chicago, Ill.
Phone: 708/656-5500

ASTM Staff: Philip Godorov, Manager, ILS program,
Phone: 610/832-9715

Kevin Shanahan, A05 staff manager
Phone: 610/832-9737

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