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Significance and Use
When properly performed and interpreted, the flattening test will provide information about the relative ductility of a tube and presence of surface defects. For welded tube products, the test will provide information on the integrity of the weld seam.
In certain product specifications which establish requirements for tubes of sizes greater than 4 in. [100 mm], the test may be allowed as a substitute to the expansion pin test in B153.
1.1 This test method establishes the requirements for the flattening test for copper and copper alloy pipe and tube of all sizes. The method addresses both inch-pound and metric considerations, and both seamless and welded product.
1.2 Units—Values stated in either inch-pound units or SI units are to be regarded as standard. Within the text, SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B153 Test Method for Expansion (Pin Test) of Copper and Copper-Alloy Pipe and Tubing
B846 Terminology for Copper and Copper Alloys
ICS Number Code 77.150.30 (Copper products)
UNSPSC Code 40171511(Commercial copper pipe); 40182000(Seamless copper tubes)
ASTM B968 / B968M-10, Standard Test Method for Flattening of Copper and Copper-Alloy Pipe and Tube, ASTM International, West Conshohocken, PA, 2010, www.astm.orgBack to Top