ASTM B919 Standard Specification for Welded Copper Heat Exchanger Tubes With Internal Enhancement

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ASTM B919 Standard Specification for Welded Copper Heat Exchanger Tubes With Internal Enhancement
This specification establishes the requirements for welded, internally enhanced copper tube, in straight lengths or coils, suitable for use in refrigeration and air conditioning products or other heat exchangers. The following types of welded tubes are: as-welded and welded tube, subsequently annealed. The material of manufacture shall be sheet or strip, of the required alloy, and may be either cold worked or annealed. The welded tube shall be manufactured from either cold rolled or annealed sheet or strip. The sheet or strip shall be formed into a tubular shape on a suitable forming mill. The material shall conform to the chemical requirements specified. The microstructure shall show complete recrystallization and shall have an average grain size within the limits specified. Nondestructive examination, electromagnetic test, cleanness requirements, and cuprous oxide requirement shall be made to conform to the specified requirements.
1. Scope
1.1 This specification establishes the requirements for welded, internally enhanced copper tube, in straight lengths or coils, suitable for use in refrigeration and air conditioning products or other heat exchangers. 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 The product shall be produced of the following coppers. Unless otherwise specified, tubes made from any one of these coppers may be supplied: Copper UNS No. Type of Metal C10200 Oxygen-free without residual deoxidants C12200 Phosphorized, high residual phosphorus (DHP) 1.4 The following pertains to the test method described in 18.4 of 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 and health practices and determine the applicability of regulatory requirements prior to use.
2. Referenced Documents
ASTM Standards B153 Test Method for Expansion (Pin Test) of Copper and Copper-Alloy Pipe and Tubing B577 Test Methods for Detection of Cuprous Oxide (Hydrogen Embrittlement Susceptibility) in Copper B601 Classification for Temper Designations for Copper and Copper Alloys--Wrought and Cast B846 Terminology for Copper and Copper Alloys E3 Guide for Preparation of Metallographic Specimens E8/E8M Test Methods for Tension Testing of Metallic Materials E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications E53 Test Method for Determination of Copper in Unalloyed Copper by Gravimetry E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods) E112 Test Methods for Determining Average Grain Size E243 Practice for Electromagnetic (Eddy-Current) Examination of Copper and Copper-Alloy Tubes E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition E2575 Test Method for Determination of Oxygen in Copper and Copper Alloys
Keywords
Deoxidized Copper - Heat Exchangers - Hvac Systems - Oxygen Free Copper - Phosphorus Deoxidized Copper - Refrigeration Systems - Welded Copper Alloy Tubes - Welded Tubes And Pipes
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