Значение и использование

For purposes of determining compliance with the specified limits for requirements of the properties listed in the following table, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29.

PropertyRounded Unit for Observed or
Calculated Value Chemical compositionnearest unit in the last righthand place
of figures Tensile strength and yield strengthnearest ksi (Nearest 5 MPa) Grain size: Up to 0.055 mm, incl,
Over 0.055 mmnearest multiple of 0.005 mm
to the nearst 0.010 mm Expansion: Nearest 1 %

Область применения

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

Copper or
Copper Alloy UNS No.²Previously Used
DesignationType 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.

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

WarningMercury has been designated by EPA and many state agencies as a hazardous material that can cause central nervous system, kidney, and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury-containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and EPA’s website (http://www.epa.gov/mercury/faq.htm) for additional information. Users should be aware that selling mercury or mercury-containing products, or both, in your state may be prohibited by state law. (Mercury is a definite health hazard in use and disposal. (See 12.1.1.))