Standard Specification for Cartridge Brass Cartridge Case Cups
Standard Specification for Cartridge Brass Cartridge Case Cups
ABSTRACT 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. 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 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 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 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.
ASTM B129-22: Standard Specification for Cartridge Brass Cartridge Case Cups is a key international standard established by ASTM International to define the requirements for the production of cartridge case cups made from Copper Alloy UNS No. C26000. This specification supports the manufacture of cups intended for further processing into cartridge cases for both small arms (Type I) and artillery applications (Type II). The standard sets detailed criteria covering material composition, manufacturing processes, grain size, inspection, and packaging to ensure consistent quality and performance for cartridge brass case cups.
Employing ASTM B129-22 helps manufacturers, defense contractors, and suppliers maintain strict quality control of brass cups used in various ammunition applications, promoting reliability and safety in the final products.
Material Specification
Types of Cup Products
Manufacturing and Processing
Inspection and Quality Control
Packaging and Marking
ASTM B129-22 is widely used in the defense and ammunition manufacturing sectors for the following practical applications:
Другие стандарты ASTM
Production of Ammunition Cups: Ensures consistent and reliable manufacture of brass cups for both small-caliber and artillery ammunition, laying the foundation for the proper functioning and structural integrity of finished cartridge cases.
Quality Assurance in Military Supply Chains: Provides a standardized basis for procurement specifications and inspection criteria, minimizing variability and defects in supplied ammunition components.
Material Standardization: Helps facilities control the chemical and metallurgical properties of cartridge brass, supporting performance consistency during further processing, such as deep drawing and forming.
Compliance and Contractual Reference: Used as an official specification referenced in government and defense contracts to ensure conformity with internationally recognized material and manufacturing standards.
Users of ASTM B129-22 may also need to reference related standards for copper alloys, material testing, and packaging, including:
Following ASTM B129-22 and related standards gives manufacturers and buyers confidence in the quality, traceability, and suitability of cartridge brass case cups for defense and commercial ammunition production, ensuring global interoperability and compliance.