ASTM B129-22

Standard Specification for Cartridge Brass Cartridge Case Cups

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STANDARD published on 1.5.2022

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The information about the standard:

Designation standards: ASTM B129-22
Publication date standards: 1.5.2022
SKU: NS-1058356
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Copper products

Annotation of standard text ASTM B129-22 :

This specification establishes the requirements for annealed cartridge brass cups produced of Copper Alloy UNS No. C26000 for processing into for Type I and II cartridge cases, which are for small arms cartridge case cups and for artillery cartridge case cups, respectively. The material of manufacture shall be annealed plate, sheet, strip, or disks of wrought Alloy UNS No. 26000 processed to produce even-topped cups. The material shall be blanked and cupped to meet the cup dimensions specified, and subsequently annealed. The annealed cups shall be pickled, washed, and dried. The chemical and the grain size requirements are specified.

Keywords:
cartridge brass annealed cups, cartridge case cups, UNS No. C26000,, ICS Number Code 77.150.30 (Copper products)

Additional information

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:	?
Under 0.060 mm	Nearest multiple of 0.005 mm
0.060 mm and over	Nearest 0.01 mm

1. Scope

1.1?This specification establishes the requirements for annealed cartridge brass cups produced of Copper Alloy UNS No. C26000 for processing into cartridge cases of the following types:

1.1.1?Type I, for small arms cartridge case cups, and

1.1.2?Type II, for artillery cartridge case cups.

1.2?UnitsThe values stated in inch-pound units are to be regarded as standard, except for grain size, which is given in SI units. The values given 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.

2. Referenced Documents

B601-18a	Standard Classification for Temper Designations for Copper and Copper Alloys´Wrought and Cast (Includes all amendments and changes 10/24/2018).
B846-19a	Standard Terminology for Copper and Copper Alloys (Includes all amendments and changes 8/8/2019).
E3-11(2017)	Standard Guide for Preparation of Metallographic Specimens
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E255-23	Standard Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
E112-13(2021)	Standard Test Methods for Determining Average Grain Size
E478-08(2017)	Standard Test Methods for Chemical Analysis of Copper Alloys

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