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ASTM B131-12

Historical Revision

Standard Specification for Copper Alloy Bullet Jacket Cups

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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 ICaliber 0.30.

1.1.2 Type IICaliber 0.45.

1.1.3 Type IIICaliber 0.50.

1.1.4 Type IVAs specified in the contract or order.

1.1.5 Class INot annealed.

1.1.6 Class IIAnnealed.

1.2 UnitsValues 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.


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.


For the purposes 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.

PropertyRounded Unit for Observed or Calculated Value
Chemical compositionNearest unit in the last right-hand significant digit used in expressing the limiting value
Grain sizeNearest multiple of 0.005 mm

SDO ASTM: ASTM International
Document Number B131
Publication Date April 1, 2012
Language en - English
Page Count 5
Revision Level 12
Supercedes
Committee B05.01
Publish Date Document Id Type View
Oct. 1, 2022 B0131-22 Revision
April 1, 2017 B0131-17 Revision
April 1, 2012 B0131-12 Revision
Oct. 1, 2007 B0131-07 Revision
April 10, 2002 B0131-96 Revision
April 10, 2002 B0131-02 Revision