ASTM B68M-99 - 10.9.1999
 
1. Scope

1.1 This specification establishes the requirements for bright annealed seamless copper tube suitable for use in refrigeration, oil lines, gasoline lines, etc., where tube with an interior surface essentially free from scale and dirt is required.

1.1.1 Tubes made from any of the following Copper UNS No. designations may be supplied, unless otherwise specified in the contract or purchase order:

Copper UNS No. 2 Type of Copper C10200 Oxygen-free without residual deoxidants C10300 Oxygen-free, extra low phosphorus C10800 Oxygen-free, low phosphorus C12000 Phosphorus Deoxidized, low residual phosphorus C12200 Phosphorus Deoxidized, high residual phosphorus

1.2 Values stated in SI units are the standard.

1.3 This specification is the companion to inch-pound Specification B68.

1.4 The following hazard statement pertains only to the test method described in Sections 20.5 and 21.2.6 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.

 
2. Referenced Documents

B68-02

Standard Specification for Seamless Copper Tube, Bright Annealed

B153-22

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

B251M-10

Standard Specification for General Requirements for Wrought Seamless Copper and Copper-Alloy Tube [Metric] (Withdrawn 2017)

B577-24

Standard Test Methods for Detection of Cuprous Oxide (Hydrogen Embrittlement Susceptibility) in Copper

B601-24

Standard Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast

E3-26

Standard Guide for Preparation of Metallographic Specimens

E527-23

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

E29-22

Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

E53-07

Standard Test Method for Determination of Copper in Unalloyed Copper by Gravimetry

E62-89(1996)

Standard Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods)

E112-25e1

Standard Test Methods for Determining Average Grain Size (Includes all amendments and changes 9/9/2026).

E243-24

Standard Practice for Electromagnetic (Eddy Current) Examination of Copper and Copper-Alloy Tubes

E255-23

Standard Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition

E8M-04

Standard Test Methods for Tension Testing of Metallic Materials [Metric] (Withdrawn 2008)