ASTM B372-17 - 1.10.2017
 
Significance and Use

15.1 For purposes of determining compliance with the specified limits for requirements of chemical composition, hardness, and electrical resistivity, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29.

 
1. Scope

1.1 This specification establishes the requirements for seamless copper and copper-alloy rectangular tube intended for use as transmission lines in electronic equipment. Five types of material are specified having the following nominal compositions:2

Copper or
Copper Alloy
UNS2 No.

 Previously
Used Designation

Nominal Composition, %

 Copper

 Zinc

Phosphorus

 

 

 

 

 

C10100

Copper, Type OFEA

99.99B

...

...

C10200

Copper, Type OFA

99.95B

...

...

C10300

Copper, Type OFXLPA

99.95B

...

0.003

C12000

Copper, Type DLPA

99.90B

...

0.008

C22000

Commercial
   bronze, 90 %

90

10

...

(A) Types OF, OFE, OFXLP, and DLP are described in Classification B224.
(B) Minimum copper percentage.

1.2 The 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.

1.3 The following safety hazard caveat pertains only to the test method(s) described in this specification.

1.3.1 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.

1.4 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

E18-22

Standard Test Methods for Rockwell Hardness of Metallic Materials

B846-19a

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

B577-19

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

B428-09(2018)

Standard Test Method for Angle of Twist in Rectangular and Square Copper and Copper Alloy Tube

B224-16(2022)

Standard Classification of Coppers

ANSI B46.1

Surface Roughness, Waviness, and Lay Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.

B193-20

Standard Test Method for Resistivity of Electrical Conductor Materials

E255-23

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

E62-89(1996)

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

E53-07

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

E29-22

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

B170-99(2020)

Standard Specification for Oxygen-Free Electrolytic Copper´Refinery Shapes

E478-08(2017)

Standard Test Methods for Chemical Analysis of Copper Alloys