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ASTM B131-22

Standard Specification for Copper Alloy Bullet Jacket Cups

NORMA vydaná dňa 1.10.2022

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Informácie o norme:

Označenie normy: ASTM B131-22
Dátum vydania normy: 1.10.2022
Kód tovaru: NS-1086932
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM

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Anotácia textu normy ASTM B131-22 :

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.

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

Doplňujúce informácie

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 and for dimensional tolerances, 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

1. 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 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?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 that 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

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

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