ASTM B 552:2019

1.1 This specification establishes requirements for seamless and welded copper-nickel tubes from 0.250 to 2.125 in. (6.35 to 54.0 mm) in diameter for use in heat exchangers in water desalting plants. The following alloys are involved: Copper or Copper Alloy UNS No. Type of Metal C70600 90-10 copper-nickel C70620 90-10 copper-nickel (Modified for Welding) C71500 70-30 copper-nickel C71520 70-30 copper-nickel (Modified for Welding) C71640 copper-nickel-iron-manganese C72200 copper-nickel 1.2 Units- 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 The following safety hazard caveat pertains only to the test methods of Section 16 described in this specification: 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, health, and environmental practices and determine the applicability of regulatory limitations prior to its use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.