ASTM-B131 Standard Specification for Copper Alloy Bullet Jacket Cups

ASTM-B131 - 2017 EDITION - CURRENT
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This specification covers bullet jacket preform cups made from UNS C22000 wrought copper alloy used for processing Types I-IV and Classes I-II bullet jackets. This standard contains information on chemical composition, grain size and testing requirements for the preform cups.

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Scope

1.1 This specification establishes the requirements for bullet jacket preform cups produced of Copper Alloy UNS No. C22000 for processing into bullet jackets of the following types and classes:

1.1.1 Type I—Caliber 0.30.

1.1.2 Type II—Caliber 0.45.

1.1.3 Type III—Caliber 0.50.

1.1.4 Type IV—As specified in the contract or order.

1.1.5 Class I—Not annealed.

1.1.6 Class II—Annealed.

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

1.3 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.

Significance and Use

15.1 For the purpose of determining compliance with the specified limits for requirements of the properties listed in the following table, 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 significant digit used in expressing the limiting value

 

 

Grain size

Nearest multiple of 0.005 mm

Keywords

bullet jackets; commercial bronze cups; UNS No. C22000;; ICS Number Code 77.150.30 (Copper products)

To find similar documents by ASTM Volume:

02.01 (Copper and Copper Alloys)

To find similar documents by classification:

77.150.30 (Copper products)

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Document Number

ASTM-B131-17

Revision Level

2017 EDITION

Status

Current

Modification Type

Revision

Publication Date

April 15, 2017

Document Type

Specification

Page Count

5 pages

Committee Number

B05.01