ASTM-B743 Standard Specification for Seamless Copper Tube in Coils

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This standard specification establishes the requirements for seamless copper tube coils, suitable for use in refrigeration and air conditioning or other uses, such as oil lines and gasoline lines. The material of manufacture shall be cast billet, bar, tube and so forth of Copper Alloys No. C10200, C10300, C10800, C12000, or C12200. The tube shall be manufactured by such hot and cold working processes needed to produce a homogeneous, uniform wrought structure. The tube shall be cold drawn to the prescribed finish size and wall thickness. When the cold-drawn temper is required, the final drawing operation shall conform to the specified temper properties. When the annealed temper is required, the tube shall be annealed after the final cold draw to the specified temper properties. The product shall conform to the prescribed electrical mass resistivity, tensile strength, yield strength, Rockwell hardness, and expansion. Each tube shall be subjected to an eddy-current test. Particular coppers shall be tested to meet the cuprous oxide, embrittlement, and cleanness requirements.




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1.1 This specification establishes the requirements for seamless copper tube in coils, suitable for use in refrigeration and air conditioning or other uses, such as oil lines and gasoline lines.

1.2 UnitsThe 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 tube shall be produced of the following coppers. Unless otherwise specified, tubes made from any one of these coppers may be supplied:

Copper Alloy
Previously Used
Type of Copper
C10200OF Oxygen-free without residual deoxidantsA
C10300...Oxygen-free, extra low phosphorusA
C10800...Oxygen-free, low phosphorusA
C12000DLPPhosphorized, low residual phosphorus
C12200DHPPhosphorized, high residual phosphorus

A See Classification B224.

1.4 The following safety hazards caveat pertains to the test method portion, Section 17, 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 limitations prior to use.


coils; copper tubes; seamless; UNS No. C10200; UNS No. C10300; UNS No. C10800; UNS No. C12000; UNS No. C12200; Coiled copper tube; Seamless Cu/Cu alloy tube--specifications; UNS C10200--pipe/tube (seamless/welded); UNS C10300 (oxygen-free extra low phosphorus copper (OFXLP)); UNS C10300--pipe/tube (seamless/welded); UNS C10800--pipe/tube (seamless/welded); UNS C12000--pipe/tube (seamless/welded); UNS C12200--pipe/tube (seamless/welded); ICS Number Code 77.150.30 (Copper products)

To find similar documents by ASTM Volume:

02.01 (Copper and Copper Alloys)

To find similar documents by classification:

77.150.30 (Copper products)

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Publication Date

June 15, 2012

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Page Count

6 pages

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