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ASTM B372-22

Current Revision

Standard Specification for Seamless Copper and Copper-Alloy Rectangular Waveguide Tube

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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

...

1.2 Units—The 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 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.


This specification covers seamless copper and copper-alloy rectangular waveguide tube intended for use as transmission lines in electronic equipment. Four types of material are specified having the following nominal compositions: C10200, C10300, C12000, and C22000. The copper and copper-alloy tubes shall be finished by such cold-working and annealing operations as are necessary to meet the required properties. The material shall conform to the chemical requirements specified. The material shall conform to the Rockwell hardness requirements prescribed. The test specimens of copper UNS nos. C10200, C10300, and C12000 shall be free of cuprous oxide. It is to be expected that samples of Copper UNS Nos. C10200, C10300, and C12000 shall be capable of passing the embrittlement test. It is to be expected that samples of copper UNS nos. C10200, C10300, and C12000 will conform to the prescribed electrical resistivity requirements. Samples for chemical analysis shall be taken accordingly.


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.

SDO ASTM: ASTM International
Document Number B372
Publication Date May 1, 2022
Language en - English
Page Count 7
Revision Level 22
Supercedes
Committee B05.04
Publish Date Document Id Type View
May 1, 2022 B0372-22 Revision
Oct. 1, 2017 B0372-17 Revision
Oct. 1, 2012 B0372-12A Revision
April 1, 2012 B0372-12 Revision
April 1, 2011 B0372-11 Revision
Jan. 1, 1997 B0372-97 Revision
Oct. 1, 2003 B0372-97R03 Reaffirmation