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Significance and Use
When properly performed and interpreted, the expansion pin test will provide information with regard to the capacity of a tube for expansion and to reveal surface defects. The expansion pin test may provide data for research and development, engineering design, quality control, and acceptance or rejections in specifications.
In certain product specifications which establish requirements for tubes of sizes greater than 4 in. (102 mm), the test described in B968/B968M may be allowed as a substitute.
1.1 This test method establishes the requirements for the expansion pin test for copper and copper-alloy pipe and tubing with an inside diameter of 0.125 in. (3.2 mm) and greater or an outside diameter up to and including 4 in. (102 mm).
Note 1—For tubes of sizes with an inside diameter less than 0.125 in. (3.2 mm), a substitute test method must be agreed upon between the manufacturer and purchaser.
Note 2—For tubes of sizes greater than 4 in. (102 mm) in outside diameter, refer to B968/B968M for a test method.
1.2 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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.
B846 Terminology for Copper and Copper Alloys
B968/B968M Test Method for Flattening of Copper and Copper-Alloy Pipe and Tube
ICS Number Code 23.040.15 (Non-ferrous metal pipes)
UNSPSC Code 40171511(Commercial copper pipe); 40180000(Tubes tubing and tube fittings)