ASTM B447-12a(2021) - 1.1.2021
 
Significance and Use

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

Property

Rounded Unit for Observed or
Calculated Value

?

Chemical composition

Nearest unit in the last right-hand

Hardness

Significant

Electrical Resistivity

Digit used in expression the limiting value

Grain size up to 0.055 mm, incl

nearest multiple of 0.005 mm

Tensile strength

nearest ksi (5 MPa)

Expansion

Nearest 1%

 
1. Scope

1.1?This specification establishes the requirements for welded copper tube with a longitudinal seam free of filler metal produced from sheet or strip of the following coppers:

Copper UNS Nos.

Type of Copper

?

C10100

Oxygen-free electronic

C10200

Oxygen-free

C10300

Oxygen-free, extra low phosphorus

C10800

Oxygen-free, low phosphorus

C11000

Electrolytic tough pitch

C12000

Phosphorus deoxidized, low residual phosphorus

C12200

Phosphorus deoxidized, high residual phosphorus

C14200

Phosphorus deoxidized, arsenical

1.2?Unless otherwise specified in the contract or purchase order, product furnished of any listed copper, with the exception of copper C11000, shall be considered acceptable.

1.2.1?Copper C11000 welded tube shall not be used in applications where hydrogen embrittlement during heating is a concern.

1.3?UnitsThe values stated in inch-pound units are to be regarded as standard except for grain size, which is given in SI units. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4?The following hazard caveat pertains only to Section 13 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

 
2. Referenced Documents

E527-23

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

E112-13(2021)

Standard Test Methods for Determining Average Grain Size

E62-89(1996)

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

E243-18

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

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

E8/E8M-24

Standard Test Methods for Tension Testing of Metallic Materials

E3-11(2017)

Standard Guide for Preparation of Metallographic Specimens

B846-19a

Standard Terminology for Copper and Copper Alloys (Includes all amendments and changes 8/8/2019).

B601-18a

Standard Classification for Temper Designations for Copper and Copper Alloys´Wrought and Cast (Includes all amendments and changes 10/24/2018).

E255-23

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

B153-22

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

B170-99(2020)

Standard Specification for Oxygen-Free Electrolytic Copper´Refinery Shapes

B193-20

Standard Test Method for Resistivity of Electrical Conductor Materials

B577-19

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