ASTM B19-20

Standard Specification for Cartridge Brass Sheet, Strip, Plate, Bar, and Disks

ABSTRACT
This specification establishes the requirements UNS C26000 brass sheets, strips, plates, bars, and disks (blanks) that are used for the manufacture of ammunition parts like cartridge cups and disks. Each product should be manufactured by hot working, cold working, and annealing processes to produce a uniform wrought structure having the temper specified for the finished product. This specification also contains information on the prescribed tensile strength and elongation for a given thickness of annealed and as-hot rolled materials, as well as the required tensile strengths for particular rolled temper designations.
SCOPE
1.1 This specification establishes the requirements for sheet, strip, plate, bar, and disks for the manufacture of ammunition component parts thereof from alloy UNS C26000.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units, which are provided for information only and are not considered standard.  
1.2.1 Exception—Values given in inch-pound units are the standard except for grain size, which is stated in SI units.  
1.3 The following safety caveat pertains only to the test method described in Section 10 of this specification.  
1.4  This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. (Warning—Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location.)  
1.5 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.

General Information

• Status: Published
• Publication Date: 31-Mar-2020
• ICS: 77.150.30 - Copper products
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.01 - Plate, Sheet, and Strip

Relations

• Replaces: ASTM B19-15 - Standard Specification for Cartridge Brass Sheet, Strip, Plate, Bar, and Disks
• Effective Date: 01-Apr-2020
• Refers: ASTM E8/E8M-24 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Jan-2024
• Refers: ASTM B846-19a - Standard Terminology for Copper and Copper Alloys
• Effective Date: 01-Aug-2019
• Refers: ASTM B846-19 - Standard Terminology for Copper and Copper Alloys
• Effective Date: 01-Jan-2019
• Refers: ASTM B601-18a - Standard Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast
• Effective Date: 01-Oct-2018
• Refers: ASTM B858-06(2018) - Standard Test Method for Ammonia Vapor Test for Determining Susceptibility to Stress Corrosion Cracking in Copper Alloys
• Effective Date: 01-Mar-2018
• Refers: ASTM B601-18 - Standard Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast
• Effective Date: 01-Mar-2018
• Refers: ASTM B601-16 - Standard Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast
• Effective Date: 01-Oct-2016
• Refers: ASTM E8/E8M-16 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 15-Jul-2016
• Refers: ASTM E8/E8M-15 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Feb-2015
• Refers: ASTM E8/E8M-13 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Jun-2013
• Refers: ASTM E112-12 - Standard Test Methods for Determining Average Grain Size
• Effective Date: 15-Nov-2012
• Refers: ASTM B154-12e1 - Standard Test Method for Mercurous Nitrate Test for Copper Alloys
• Effective Date: 01-Oct-2012
• Refers: ASTM B154-12 - Standard Test Method for Mercurous Nitrate Test for Copper Alloys
• Effective Date: 01-Oct-2012
• Refers: ASTM B601-12 - Standard Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast
• Effective Date: 01-Oct-2012

Overview

ASTM B19-20: Standard Specification for Cartridge Brass Sheet, Strip, Plate, Bar, and Disks establishes globally recognized requirements for the manufacture and supply of wrought cartridge brass (UNS C26000) forms, including sheet, strip, plate, bar, and disks (blanks). This specification is essential for producers and purchasers involved in the production of ammunition components such as cartridge cups and disks. The standard promotes consistency in quality by outlining material composition, mechanical properties, dimensions, and testing methods, ensuring that materials meet performance and safety expectations in demanding applications.

Key Topics

• Material Specification: Defines the chemical composition for UNS C26000 cartridge brass, specifying copper, zinc, and trace element boundaries to ensure material purity and suitability for ammunition manufacturing.
• Product Forms and Tempers: Covers multiple wrought forms, including brass sheet, strip, plate, bar, and disks, with temper designations for hot rolled, cold rolled, and annealed materials. These temper grades align with specific mechanical and grain size requirements for varied applications.
• Mechanical Properties: Establishes minimum tensile strength and elongation for different tempers and thicknesses; crucial for ensuring the performance and reliability of ammunition parts under stress.
• Dimensional Tolerances: Prescribes exact tolerances for thickness, diameter, and permissible variations in product dimensions, vital for manufacturing consistency and downstream processing.
• Sampling and Testing: Provides comprehensive instructions for sampling, chemical analysis, grain size determination, tensile testing, and residual stress evaluation, ensuring products conform to the specification.
• Workmanship and Finish: Stipulates quality standards for surface cleanliness and absence of defects in finished products.
• Product Marking and Traceability: Includes requirements for identification marking, certification, and test reports, supporting traceability and compliance with procurement contracts.

Applications

ASTM B19-20 is primarily applied in industries engaged in the manufacture of ammunition components, specifically:

• Cartridge Cups and Disks: The standard is vital for producing cartridge brass cups and disks, which are later drawn or formed into ammunition casings.
• Primer Cups and Anvils: Specifies grain size and temper requirements for brass used in primer components, ensuring safety and functionality.
• Defense and Security Sectors: Adopted by defense agencies and ammunition manufacturers to meet rigorous procurement and performance criteria.
• Material Certification and Sourcing: Used by materials labs and quality control professionals to validate compliance in supplied brass products for critical applications.

By adhering to ASTM B19-20, manufacturers ensure compatibility with existing equipment, interoperability of ammunition components, and compliance with government and military procurement processes.

Related Standards

Utilizing ASTM B19-20 typically involves reference to several related standards for copper and copper alloys, supporting comprehensive material evaluation:

• ASTM B248 - General requirements for wrought copper and copper-alloy plate, sheet, strip, and rolled bar.
• ASTM B601 - Classification for temper designations for copper and copper alloys.
• ASTM E8/E8M - Methods for tension testing of metallic materials.
• ASTM E112 - Test methods for determining average grain size.
• Fed. Std. No. 185/SAE AMS-STD-185A - Identification marking of copper and copper base alloy mill products.
• MIL-STD-129 - Marking for shipment and storage.
• ASTM B154/B858 - Test methods for determining susceptibility to stress corrosion cracking.

By integrating these related standards, organizations can establish a robust quality assurance program for copper alloy products in ammunition and related high-performance applications.

Keywords: ASTM B19-20, cartridge brass, UNS C26000, brass sheet, brass strip, brass plate, brass bar, brass disks, ammunition manufacturing, copper alloy standards, mechanical properties, grain size, temper, dimensional tolerances, material certification.

Standards Content (Sample)

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.
Designation:B19 −20
Standard Specification for
Cartridge Brass Sheet, Strip, Plate, Bar, and Disks
This standard is issued under the fixed designation B19; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 2. Referenced Documents
2.1 ASTM Standards:
1.1 Thisspecificationestablishestherequirementsforsheet,
B154 Test Method for Mercurous Nitrate Test for Copper
strip, plate, bar, and disks for the manufacture of ammunition
Alloys
component parts thereof from alloy UNS C26000.
B248 Specification for General Requirements for Wrought
1.2 The values stated in inch-pound units are to be regarded
Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled
as standard. The values given in parentheses are mathematical
Bar
conversions to SI units, which are provided for information
B601 ClassificationforTemperDesignationsforCopperand
only and are not considered standard.
Copper Alloys—Wrought and Cast
1.2.1 Exception—Values given in inch-pound units are the B846 Terminology for Copper and Copper Alloys
standard except for grain size, which is stated in SI units. B858 Test Method forAmmoniaVaporTest for Determining
Susceptibility to Stress Corrosion Cracking in Copper
1.3 The following safety caveat pertains only to the test
Alloys
method described in Section 10 of this specification.
B900 Practice for Packaging of Copper and Copper Alloy
1.4 This standard does not purport to address all of the Mill Products for U.S. Government Agencies
E3 Guide for Preparation of Metallographic Specimens
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- E8/E8M Test Methods for Tension Testing of Metallic Ma-
terials
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
use.(Warning—Mercury has been designated by many regu-
latory agencies as a hazardous substance that can cause E112 Test Methods for Determining Average Grain Size
E255 Practice for Sampling Copper and Copper Alloys for
serious medical issues. Mercury, or its vapor, has been
the Determination of Chemical Composition
demonstrated to be hazardous to health and corrosive to
E478 Test Methods for ChemicalAnalysis of CopperAlloys
materials. Use caution when handling mercury and mercury-
E527 Practice for Numbering Metals and Alloys in the
containing products. See the applicable product Safety Data
Unified Numbering System (UNS)
Sheet (SDS) for additional information. The potential exists
that selling mercury or mercury-containing products, or both,
2.2 Federal Standard:
is prohibited by local or national law. Users must determine
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
legality of sales in their location.)
2.3 Military Standards:
1.5 This international standard was developed in accor-
MIL-STD-105 Sampling Procedures and Tables for Inspec-
dance with internationally recognized principles on standard-
tion by Attributes
ization established in the Decision on Principles for the
MIL-STD-129 Marking for Shipment and Storage
Development of International Standards, Guides and Recom-
2.4 SAE Standard:
mendations issued by the World Trade Organization Technical
AMS-STD-185A Identification Marking of Copper and
Barriers to Trade (TBT) Committee.
Copper Base Alloy Mill Products
1 2
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper For referenced ASTM standards, visit the ASTM website, www.astm.org, or
andCopperAlloysandisthedirectresponsibilityofSubcommitteeB05.01onPlate, contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Sheet, and Strip. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved April 1, 2020. Published May 2020. Originally the ASTM website.
approved in 1919. Last previous edition approved in 2015 as B19-15. DOI: Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
10.1520/B0019-20. Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B19−20
TABLE 1 Chemical Requirements
3. Terminology
Composition, %
3.1 For definitions of terms related to copper and copper Copper Zinc Bismuth
Lead, max Iron, max
alloys, refer to Terminology B846.
68.5 to 71.5 0.07 0.05 remainder 0.0059 max
4. Ordering Information
4.1 Include the following specified choices when placing 6.1.1 These composition limits do not preclude the presence
orders for product under this specification, as applicable: ofotherelements.Byagreementbetweenthemanufacturerand
4.1.1 ASTM designation and year of issue (for example, purchaser, limits may be established and analysis required for
B19-XX); unnamed elements.
4.1.2 Product form: sheet, strip, plate, bar, or disks (blanks);
6.2 For alloys in which zinc is listed as “remainder,” either
4.1.3 Temper (Section 7);
copper or zinc may be taken as the difference between the sum
4.1.4 Dimension: thickness, width, length;
of results of all other elements determined and 100 %. Copper,
4.1.5 How furnished: flat lengths, coils, or blanks;
when determined by difference, must conform to the require-
4.1.6 Quantity: total weight each temper, form, and size;
ments of Table 1.When all elements in Table 1 are determined,
and
the sum of the results shall be 99.7 % min.
4.1.7 When severe drawing or deep cupping is required.
7. Temper
4.2 The following options are available but may not be
included unless specified at the time of placing the order when
7.1 Product tempers, as defined in ClassificationB601, shall
required: be as follows:
4.2.1 Typeofedge(forexample,slit,sheared,sawed,andso
7.1.1 Hot Rolled Temper: M20,
forth), 7.1.2 Cold Rolled Tempers: H01, H02, H03, H04, H06,
4.2.2 Heat identification or traceability details,
H08, and H10.
4.2.3 Caliber or diameter of Type IV cups or disks (Section
7.1.3 Annealed Tempers: OS015, OS025, OS035, OS050,
11),
OS070, and OS100.
4.2.4 Residual Stress Test (Section 10),
7.1.4 The purchaser should confer with the manufacturer or
4.2.4.1 The pH value for the Ammonia Vapor Test if other
supplier for availability of product in a specific temper, form,
than 10,
and size.
4.2.5 Product Marking (Section 22),
8. Grain Size Requirements
4.2.6 On-site inspection (Section 18.1),
4.2.7 Certification (Section 20), and
8.1 Annealed sheet, strip, and bar furnished under this
4.2.8 Mill Test Report (Section 21).
specification shall conform to the requirements specified in
Table 2.
5. Materials and Manufacture
8.2 Acceptance or rejection based upon grain size shall
5.1 Materials:
depend only on the average grain size of a test specimen taken
5.1.1 The material of manufacture shall be a cast bar of
from each of two sample portions, and each specimen shall be
copper alloy UNS C26000 of such purity and soundness as to
within the limits prescribed in Table 2 when determined in
be suitable for processing into the products prescribed herein.
accordance with Test Methods E112.
5.1.2 When specified in the contract or purchase order that
8.3 Except for material ordered by the U.S. Government,
heat identification or traceability is required, the purchaser
annealed material to be used for the manufacture of cartridge
shall specify the details desired.
brasscupsanddisksshallconformtotherequirementsofTable
NOTE 1—Due to the discontinuous nature of the processing of castings
3.
into wrought products, it is not always practical to identify a specific
8.4 Annealed plate, bar, and disks ordered by the U.S.
casting analysis with a specific quantity of finished material.
Government shall meet the following requirements:
5.2 Manufacture:
8.4.1 Material up to 0.500 in. (12.70 mm) in thickness
5.2.1 The product shall be manufactured by such hot
inclusive, except material for 20 mm disks, shall be furnished
working, cold working, and annealing processes as to produce
to a grain size of 0.055 mm to 0.120 mm inclusive.
a uniform wrought structure in the finished product.
5.2.2 Theproductshallbehotorcoldworkedtothefinished
TABLE 2 Grain Size Requirements for Annealed Material
size, and subsequently annealed, when required, to meet the
Grain Size, mm
temper properties specified.
Temper Nominal
Min Max
5.3 Edges:
A
OS015 0.015 0.025
5.3.1 Slit edges shall be furnished unless otherwise speci-
OS025 0.025 0.015 0.035
fied in the contract or purchase order.
OS035 0.035 0.025 0.050
OS050 0.050 0.035 0.070
OS070 0.070 0.050 0.100
6. Chemical Composition
OS100 0.100 0.060 0.150
6.1 The product material shall conform to the chemical A
No minimum grain size required, but the material shall be fully recrystallized.
composition requirements prescribed in Table 1.
B19−20
TABLE 3 Grain Size Requirements for Material for Manufacture of TABLE 5 Tensile Strength Requirements for Rolled Tempers
Cartridge Brass Cups and Disks
NOTE 1—Plate is generally available in only the soft O60, quarter-hard
Grain Size, mm
H01, and half-hard H02 tempers. Required properties for other tempers
Type Temper Use
Min Max
shall be agreed upon between the manufacturer or supplier and the
purchaser at time of placing the order or contract.
I OS065 0.035 0.090 Strip for 0.30 and 0.45 caliber cups
II OS110 0.080 0.140 Strips for 0.50 caliber cups
Tensile Strength,
Temper Designation
A
III OS055 0.055 0.115 Disks 0.500 in. (12.7 mm) and under
ksi (MPa)
in thickness
Standard Former min max
IV OS115 0.075 0.150 Disks over 0.500 in. (12.7 mm) in
thickness H01 quarter hard 49 (340) 59 (405)
H02 half hard 57 (395) 67 (460)
H03 three-quarter hard 64 (440) 74 (510)
H04 hard 71 (490) 81 (560)
H06 extra hard 83 (570) 92 (635)
8.4.2 Material over 0.500 in. (12.70 mm) in thickness,
H08 spring 91 (625) 100 (690)
except material for 20 mm disks, shall be furnished to a grain
H10 extra spring 95 (655) 104 (715)
size of 0.070 mm to 0.150 mm inclusive.
A
1 ksi = 1000 psi.
8.4.3 Disks (blanks) of 20 mm and material for blanking
20 mmdisks(blanks)shallbefurnishedtoagrainsizeof0.070
mm to 0.130 mm inclusive.
10.1.1 When specified in the contract or purchase order, the
8.5 Material ordered as hot rolled shall be furnished to a
product shall be tested for residual stress according to the
grain size agreed upon between the manufacturer or supplier
requirements of Test Method B154 or Test Method B858, and
and the producer.
show no signs of cracking. (Warning—Mercury is a definite
8.6 Material to be used for the manufacture of primer cup
health hazard. With the Mercurous Nitrate Test, equipment for
and primer anvils shall conform to the grain size requirements
the detection and removal of mercury vapor produced in
of Table 4.
volatilization, and the use of protective gloves is recom-
mended.)
9. Mechanical Property Requirements
9.1 Tensile Strength Requirements: 11. Dimensions, Mass, and Permissible Variations
9.1.1 Product (Cold Rolled Tempers) furnished under this
11.1 The dimensions and tolerances for products described
specification shall conform to the tensile requirements pre-
by this specification, except as covered herein, shall be as
scribed in Table 5, when tested in accordance with Test
specified in the current edition of Specification B248, with
Methods E8/E8M.
particular reference to Section 6 and the dimensional tables of
9.1.2 Product (Annealed Tempers) furnished under this
that specification.
specification shall conform to the tensile requirements pre-
11.2 The diameter of the disks measured at the large end
scribed in Table 6, when tested in accordance with Test
shall not vary from that specified in the order by more than the
Methods E8/E8M.
amounts shown in Table 7.
9.1.3 Product (Hot Rolled Temper) furnished under this
specification shall conform to the tensile requirements pre-
11.3 Disks shall not vary in thickness by more than the
scribed in Table 6, when tested in accordance with Test
amounts shown in Table 8, except that disks for 20 mm
Methods E8/E8M.
cartridgecasesshallbenotlessthanthethicknessspecifiedand
shall not exceed the specified thickness by more than 0.008 in.
10. Performance Requirements
(0.20 mm) in the area 1 in. (25 mm) in diameter in the center
10.1 Residual Stress Test: of the disk.
TABLE 4 Dimensional Tolerances, Grain Size, and Temper of Brass for Primer Cup and Primer Anvils
Permissible Variation
in Thickness Standard Temper Nominal Grain Size, mm
Item Size Case, caliber Thickness, in. (mm)
Plus and Minus, Designations or Temper
in. (mm)
Cup 0.50 0.035 (0.899) 0.0008 (0.020) OS100 0.100 (OS100)
0.45 0.018 (0.458) or 0.001 (0.025) OS050 0.050 (OS050)
0.020 (0.508)
7.62 mm 0.027 (0.686) or 0.0008 (0.020) OS100 0.100 (OS100)
0.029 (0.737)
5.56 mm 0.027 (0.686) 0.0005 (0.0125) OS070 0.070 (OS070)
0.30 0.027 (0.686) 0.0008 (0.020) OS100 0.100 (OS100)
0.30 carbine 0.020 (0.508) 0.001 (0.025) OS070 0.070 (OS070)
Anvil 0.50 0.0485 (1.2315) 0.001 (0.025) OS025 0.025 (OS025)
0.45 0.038 (0.965) 0.001 (0.025) H01 ⁄4 hard (H01)
1 1
7.62 mm 0.038 (0.965) 0.001 (0.025) H01 or H02 ⁄4 or ⁄2 hard (H01 or H02)
1 1
5.56 mm 0.038 (0.965) 0.001 (0.025) H01 or H02 ⁄4 or ⁄2 hard (H01 or H02)
1 1
0.30 0.038 (0.965) 0.001 (0.025) H01 or H02 ⁄4 or ⁄2 hard (H01 or H02)
0.30 carbine 0.034 (0.864) 0.001 (0.025) H01 ⁄4 hard (H01)
B19−20
TABLE 6 Tension Test Requirements of Annealed and As-Hot Rolled Materials
NOTE 1—On annealed material under 0.020 in. (0.51 mm) in thickness, grain size only shall be specified.
Tensile Strength, min
Thickness, in. (mm) Elongation in 2 in. (50 mm), min,%
A
ksi (MPa)
annealed temper, OS025, 0.015–
0.035 mm nominal grain size
0.020 to 0.050 (0.508 to 1.27), incl 45 (310) 40
Over 0.050 to 0.100 (1.27 to 2.54), incl 45 (310) 42
Over 0.100 to 0.150 (2.54 to 3.81), incl 45 (310) 45
Over 0.150 (3.81) 45 (310) 50
annealed temper, OS070, 0.050–
0.100 mm nominal grain size
0.020 to 0.050 (0.508 to 1.27), incl 44 (305) 45
Over 0.050 to 0.100 (1.27 to 2.5
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B19 − 15 B19 − 20
Standard Specification for
Cartridge Brass Sheet, Strip, Plate, Bar, and Disks
This standard is issued under the fixed designation B19; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification establishes the requirements for sheet, strip, plate, bar, and disks for the manufacture of ammunition
component parts thereof from alloy UNS C26000.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units, which are provided for information only and are not considered standard.
1.2.1 Exception—Values given in inch-pound units are the standard except for grain size, which is stated in metricSI units.
1.3 The following safety caveat pertains only to the test method described in Section 10 of this specification.(Warning—
Mercury has been designated by many regulatory agencies as a hazardous material that can cause serious medical issues. Mercury,
or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Caution should be taken when handling
mercury and mercury containing products. See the applicable product Safety Data Sheet (SDS) for additional information. Users
should be aware that selling mercury and/or mercury containing products into your state or country may be prohibited by law.)
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use. (Warning—Mercury has been designated by many regulatory agencies as a
hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health
and corrosive to materials. Use caution when handling mercury and mercury-containing products. See the applicable product
Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or
both, is prohibited by local or national law. Users must determine legality of sales in their location.)
1.5 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
2.1 ASTM Standards:
B154 Test Method for Mercurous Nitrate Test for Copper Alloys
B248 Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar
B601 Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast
B846 Terminology for Copper and Copper Alloys
B858 Test Method for Ammonia Vapor Test for Determining Susceptibility to Stress Corrosion Cracking in Copper Alloys
B900 Practice for Packaging of Copper and Copper Alloy Mill Products for U.S. Government Agencies
E3 Guide for Preparation of Metallographic Specimens
E8/E8M Test Methods for Tension Testing of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E112 Test Methods for Determining Average Grain Size
E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
E478 Test Methods for Chemical Analysis of Copper Alloys
This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.01 on Plate,
Sheet, and Strip.
Current edition approved May 1, 2015April 1, 2020. Published June 2015May 2020. Originally approved in 1919. Last previous edition approved in 20102015 as
B19 – 10.B19-15. DOI: 10.1520/B0019-15.10.1520/B0019-20.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B19 − 20
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
2.2 Federal Standards:Standard:
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
Fed. Std. No. 185 Identification Marking of Copper and Copper-Base Alloy Mill Products
2.3 Military Standards:
MIL-STD-105 Sampling Procedures and Tables for Inspection by Attributes
MIL-STD-129 Marking for Shipment and Storage
2.4 SAE Standard:
AMS-STD-185A Identification Marking of Copper and Copper Base Alloy Mill Products
3. Terminology
3.1 For definitions of terms related to copper and copper alloys, refer to Terminology B846.
4. Ordering Information
4.1 Include the following specified choices when placing orders for product under this specification, as applicable:
4.1.1 ASTM designation and year of issue (for example, B19-XX),B19-XX);
4.1.2 Product form: sheet, strip, plate, bar, or disks (blanks),(blanks);
4.1.3 Temper (Section 7),);
4.1.4 Dimension: thickness, width, length,length;
4.1.5 How furnished: flat lengths, coils, or blanks,blanks;
4.1.6 Quantity: total weight each temper, form, and size,size; and
4.1.7 When severe drawing or deep cupping is required.
4.2 The following options are available but may not be included unless specified at the time of placing the order when required:
4.2.1 Type of edge (for example, slit, sheared, sawed, and so forth),
4.2.2 Heat identification or traceability details,
4.2.3 Caliber or diameter of Type IV cups or disks (Section 11),
4.2.4 Residual Stress Test (Section 10),
4.2.4.1 The pH value for the Ammonia Vapor Test if other than 10,
4.2.5 Product Marking (Section 22),
4.2.6 On-site inspection (Section 18.1),
4.2.7 Certification (Section 20), and
4.2.8 Mill Test Report (Section 21).
5. Materials and Manufacture
5.1 Materials:
5.1.1 The material of manufacture shall be a cast bar of copper alloy UNS C26000 of such purity and soundness as to be suitable
for processing into the products prescribed herein.
5.1.2 When specified in the contract or purchase order,order that heat identification or traceability is required, the purchaser shall
specify the details desired.
NOTE 1—Due to the discontinuous nature of the processing of castings into wrought products, it is not always practical to identify a specific casting
analysis with a specific quantity of finished material.
5.2 Manufacture:
5.2.1 The product shall be manufactured by such hot working, cold working, and annealing processes as to produce a uniform
wrought structure in the finished product.
5.2.2 The product shall be hot or cold worked to the finished size, and subsequently annealed, when required, to meet the temper
properties specified.
5.3 Edges:
5.3.1 Slit edges shall be furnished unless otherwise specified in the contract or purchase order.
6. Chemical Composition
6.1 The product material shall conform to the chemical composition requirements prescribed in Table 1.
6.1.1 These composition limits do not preclude the presence of other elements. By agreement between the manufacturer and
purchaser, limits may be established and analysis required for unnamed elements.
Available from DLA Document Services, Building 4/D, 700 Robbins Ave., Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
B19 − 20
TABLE 1 Chemical Requirements
Composition, %
Copper Zinc Bismuth
Lead, max Iron, max
68.5 to 71.5 0.07 0.05 remainder 0.0059 max
6.2 For alloys in which zinc is listed as “remainder,” either copper or zinc may be taken as the difference between the sum of
results of all other elements determined and 100 %. Copper, when determined by difference, must conform to the requirements of
Table 1. When all elements in Table 1 are determined, the sum of the results shall be 99.7 % min.
7. Temper
7.1 Product tempers, as defined in Classification B601, shall be as follows:
7.1.1 Hot Rolled Temper: M20,
7.1.2 Cold Rolled Tempers: H01, H02, H03, H04, H06, H08, and H10.
7.1.3 Annealed Tempers: OS015, OS025, OS035, OS050, OS070, and OS100.
7.1.4 The purchaser should confer with the manufacturer or supplier for availability of product in a specific temper, form, and
size.
8. Grain Size Requirements
8.1 Annealed sheet, strip, and bar furnished under this specification shall conform to the requirements specified in Table 2.
8.2 Acceptance or rejection based upon grain size shall depend only on the average grain size of a test specimen taken from
each of two sample portions, and each specimen shall be within the limits prescribed in Table 2 when determined in accordance
with Test Methods E112.
8.3 Except for material ordered by the U.S. Government, annealed material to be used for the manufacture of cartridge brass
cups and disks shall conform to the requirements of Table 3.
8.4 Annealed plate, bar, and disks ordered by the U.S. Government shall meet the following requirements:
8.4.1 Material up to 0.500 in. (12.70 mm) in thickness inclusive, except material for 20 mm disks, shall be furnished to a grain
size of 0.055 mm to 0.120 mm inclusive.
8.4.2 Material over 0.500 in. (12.70 mm) in thickness, except material for 20-mm 20 mm disks, shall be furnished to a grain
size of 0.070 mm to 0.150 mm inclusive.
8.4.3 Disks (blanks) of 20 mm and material for blanking 20-mm20 mm disks (blanks) shall be furnished to a grain size of 0.070
mm to 0.130 mm inclusive.
8.5 Material ordered as-hot as hot rolled shall be furnished to a grain size as agreed upon between the manufacturer or supplier
and the producer.
8.6 Material to be used for the manufacture of primer cup and primer anvils shall conform to the grain size requirements of
Table 4.
9. Mechanical Property Requirements
9.1 Tensile Strength Requirements:
9.1.1 Product (Cold Rolled Tempers) furnished under this specification shall conform to the tensile requirements prescribed in
Table 5, when tested in accordance with Test Methods E8/E8M.
9.1.2 Product (Annealed Tempers) furnished under this specification shall conform to the tensile requirements prescribed in
Table 6, when tested in accordance with Test Methods E8/E8M.
9.1.3 Product (Hot Rolled Temper) furnished under this specification shall conform to the tensile requirements prescribed in
Table 6, when tested in accordance with Test Methods E8/E8M.
TABLE 2 Grain Size Requirements for Annealed Material
Grain Size, mm
Temper Nominal
Min Max
A
OS015 0.015 0.025
OS025 0.025 0.015 0.035
OS035 0.035 0.025 0.050
OS050 0.050 0.035 0.070
OS070 0.070 0.050 0.100
OS100 0.100 0.060 0.150
A
No minimum grain size required, but the material shall be fully recrystallized.
B19 − 20
TABLE 3 Grain Size Requirements for Material for Manufacture of
Cartridge Brass Cups and Disks
Grain Size, mm
Type Temper Use
Min Max
I OS065 0.035 0.090 Strip for 0.30 and 0.45 caliber cups
II OS110 0.080 0.140 Strips for 0.50 caliber cups
III OS055 0.055 0.115 Disks 0.500 in. (12.7 mm) and under
in thickness
IV OS115 0.075 0.150 Disks over 0.500 in. (12.7 mm) in
thickness
10. Performance Requirements
10.1 Residual Stress Test:
10.1.1 When specified in the contract or purchase order, the product shall be tested for residual stress according to the
requirements of Test Method B154 or Test Method B858, and show no signs of cracking. (Warning—Mercury is a definite health
hazard. With the Mercurous Nitrate Test, equipment for the detection and removal of mercury vapor produced in volatilization, and
the use of protective gloves is recommended.)
11. Dimensions, Mass, and Permissible Variations
11.1 The dimensions and tolerances for products described by this specification, except as covered herein, shall be as specified
in the current edition of Specification B248, with particular reference to Section 6 and the dimensional tables of that specification.
11.2 The diameter of the disks measured at the large end shall not vary from that specified in the order by more than the amounts
shown in Table 7.
11.3 Disks shall not vary in thickness by more than the amounts shown in Table 8, except that disks for 20-mm 20 mm cartridge
cases shall be not less than the thickness specified and shall not exceed the specified thickness by more than 0.008 in. (0.20 mm)
in the area 1 in. (25 mm) in diameter in the center of the disk.
11.4 Material to be used for the manufacture of primer cup and primer anvil shall conform to the dimensional tolerances
requirements shown in Table 4.
11.5 Special dimensional tolerances shall be as agreed upon between the manufacturer or supplier and the purchaser.
11.6 Straightness shall be determined by placing the piece on a level surface so that the arc or departure from straightness is
horizontal. The maximum depth of arc shall be measured to the nearest ⁄32 in. (0.8 mm) by means of a straightedge straight edge
and a steel scale.
12. Workmanship, Finish, and Appearance
12.1 Cartridge brass shall be free of defects, and it shall be well cleaned and free of dirt.
12.2 In addition to the above requirement, cartridge brass disks shall be free of oxidation, pinholes, surface splits, dirt
inclusions, segregations, or any other defects. They shall be free of oil and grease, acid, dirt, grit of any kind, and shall be clean
and bright.
13. Sampling
13.1 The lot size, portion size, and selection of pieces for materials purchased shall be as follows:
13.1.1 Lot Size—20 000 lb (9070 kg) or fraction thereof.
13.1.2 Portion Size—Pieces from at least ten individual lengths of the finished product. If the lot consists of less than the number
of lengths indicated in the portion size, a piece shall be taken from each individual length.
13.2 For materials purchased by the U.S. Government, sampling shall be accomplished as follows:
13.2.1 The lot size, portion size, and selection of pieces shall conform to the sampling plan of Table 9 for chemical analysis,
for tension tests, for grain size determinations, and for the residual stress test.
13.2.2 Sampling for Visual and Dimensional Examination—If the weight of each piece is more than 150 lb (68 kg), every piece
shall be examined. If the weight of each piece is 150 lb or less, a representative specimen shall be visually examined to determine
compliance with the requirements of the contract for identification marking and workmanship, and shall be measured for
compliance with the dimensional requirements of this specification and the contract.
13.3 When material is furnished in rolls or on ree
...