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New Loop Abrasion Test for Metals

A task group of ASTM Subcommittee G02.30 on Abrasive Wear has developed an evaluation of the relative abrasion resistance of metals. G 174, Standard Test Method for Measuring Abrasion Resistance of Materials by Abrasive Loop Contact, ranks rigid engineering materials for abrasion resistance by rubbing with fixed abrasive media.

“G 174 uses a continuous loop of commercially available 30 µm aluminum oxide finishing tape to abrade a fixed specimen,” says task group chairman Ken Budinski, technical director, Bud Labs, Rochester, N.Y. “G02 has two other ‘dry’ abrasion test standards, ASTM G 65 [Standard Test Method for Measuring Abrasion Using the Dry Sand/Rubber Wheel Apparatus], and G 81 [Standard Test Method for Jaw Crusher Gouging Abrasion Test],” he says. “The G 174 loop abrasion test uses a more aggressive abrasive (aluminum oxide) – an abrasive that is more than twice as hard as the silica abradant used in the G 65 test. This new test allows faster, lower cost and more discriminating screening of surfaces that may be resistant to silica abrasion.”

The G 174 test does not simulate gouging abrasion, and the subcommittee recommends G 81 to simulate these kinds of applications, Budinski says.

The subcommittee invites stakeholders to participate as they apply the loop abrasion test to proposed standards for ceramics, cemented carbides, and thin film coatings.

For further technical information, contact Ken Budinski, Bud Labs, Rochester, N.Y. (phone: 585/225-6529; fax: 585/865-8596). ASTM Committee G02 on Wear and Erosion meets Dec. 10-11 at the Hyatt Regency in Phoenix, Ariz. For meeting or membership information, contact Diane Rehiel, manager, Technical Committee Operations, ASTM International (phone: 610/832-9717). //

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