scope:

This specification establishes the requirements for welded tube of copper and various copper alloys up to 31⁄8 in., inclusive, in diameter, for use in surface condensers, evaporators, heat exchangers, and general engineering applications. The following coppers or copper alloys are involved:²

Copper or Copper Alloy UNS No.2 Previously Used Designation Type of Metal

C10800^A ... oxygen-free, low phosphorus

C12200^A ... DHP phosphorized, high residual phosphorus

C19400 ... copper-iron alloy

C23000 ... red brass

C44300 ... arsenical admiralty

C44400 ... antimonial admiralty

C44500 ... phosphorized admiralty

C68700 ... arsenical aluminum brass

C70400 ... 95-5

copper-nickel C70600 ... 90-10

copper-nickel C70620 ... 90-10

copper-nickel (Modified for Welding)

C71000 ... 80-20 copper-nickel

C71500 ... 70-30 copper-nickel

C71520 ... 70-30 copper-nickel (Modified for Welding)

C71640 ... copper-nickel-iron-manganese

C72200 ... ...

^A Copper UNS Nos. C10800 and C12200 are classified in Classification B224.

The values stated in either inch-pound or SI units are to be regarded separately 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.

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 use. (Warning-Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location.

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.

A Summary of Changes section appears at the end of this standard

New designation established in accordance with Practice E527. In the new UNS system, the designations for copper alloys are simply expansions of the present standard designations by a prefix "C" and a suffix "00."