ASTM B640 - 12a

    Standard Specification for Welded Copper Tube for Air Conditioning and Refrigeration Service

    Active Standard ASTM B640 | Developed by Subcommittee: B05.04

    Book of Standards Volume: 02.01


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    Abstract

    This specification establishes the requirements for welded copper for air conditioning and refrigeration service for use in connections, repairs, and alterations. The material of manufacture shall be sheet or strip of Copper Alloy UNS No. C10100, or C10200, or C12000, or C12200 of such purity and soundness as to be suitable for processing into welded tube to meet the properties prescribed. The product shall be manufactured by forming the material into a tubular shape on a suitable forming mill and welded using an automatic process. The product shall be cold worked to the finished size and wall thickness and subsequently annealed to meet the temper properties specified. The material shall conform to the chemical compositional requirements for the Copper UNS No. designation specified. Tensile strength test, expansion test, microscopical examination, hydrogen embrittlement susceptibility, flattening test, reverse bend test, electromagnetic test, and cleanness test shall be made to conform to specified requirements.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    Significance and Use

    1. Scope

    1.1 This specification establishes the requirements for welded copper tube for air conditioning and refrigeration service for use in connections, repairs, and alterations. The tube shall be made from one of the following coppers:

    Copper UNS No.

    Previously Used Designation

    Type of Copper

     

     

     

    C10100

    OFE

    Oxygen-free electronic

    C10200

    OF

    Oxygen-free without-residual oxidants

    C12000

    DLP

    Phosphorus-deoxidized, low-residual phosphorus

    C12200

    DHP

    Phosphorus-deoxidized, high-residual phosphorus

     


    Note 1Fittings used for soldered or brazed connections in air conditioning and refrigeration systems are described in ASME Standard B 16.22.
    Note 2The assembly of copper tubular systems by soldering is described in Practice B828.
    Note 3Solders for joining copper tubular systems by descirbed in Specification B32. The requirements for acceptable fluxes for these systems are described in Specification B813.

    1.2 Copper UNS No. C12200 shall be furnished, unless otherwise specified. The copper tube shall be supplied in annealed coils or drawn temper straight lengths.

    1.3 Units—Values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units which are provided for information only and are not considered standard.

    1.4 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.

    ASTM Standards

    B32 Specification for Solder Metal

    B153 Test Method for Expansion (Pin Test) of Copper and Copper-Alloy Pipe and Tubing

    B170 Specification for Oxygen-Free Electrolytic Copper--Refinery Shapes

    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

    B813 Specification for Liquid and Paste Fluxes for Soldering of Copper and Copper Alloy Tube

    B828 Practice for Making Capillary Joints by Soldering of Copper and Copper Alloy Tube and Fittings

    B846 Terminology for Copper and Copper Alloys

    B900 Practice for Packaging of Copper and Copper Alloy Mill Products for U.S. Government Agencies

    B968/B968M Test Method for Flattening of Copper and Copper-Alloy Pipe and Tube

    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)

    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

    E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

    ASME Standards

    B16.22 Wrought Copper and Copper Alloy Solder Joint Pressure Fittings


    UNSPSC Code

    UNSPSC Code 73161517(Air conditioning or ventilating or refrigeration equipment manufacture services); 40181500(Welded copper tubes)


    DOI: 10.1520/B0640-12A

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