Standard Historical Last Updated: Oct 13, 2017
ASTM B372-12a

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

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 to the nearest unit in the last right-hand place of the figures of the specified limit in accordance with the rounding method of Practice E29.

Abstract

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.

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

Phos-
phorus

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.

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Details
Book of Standards Volume: 02.01
Developed by Subcommittee: B05.04
Pages: 7
DOI: 10.1520/B0372-12A
ICS Code: 77.150.30