ASTM B824-17

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: B824 − 16 B824 − 17
Standard Specification for
General Requirements for Copper Alloy Castings
This standard is issued under the fixed designation B824; 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 general requirements common to ASTM copper alloy casting specifications B22/B22M, B61,
B62, B66, B67, B148, B176, B271/B271M, B369, B427, B505/B505M, B584, B763/B763M, B770, and B806. These
requirements apply to the casting specifications to the extent referenced therein.
1.1.1 In the event of conflict between this specification and a casting specification, the requirements of the casting specification
shall take precedence.
1.2 The chemical composition and other requirements not included in this specification shall be prescribed in the casting product
specifications.
1.3 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are
mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 No precise quantitative relationship can be stated between the properties of the metal in various locations of the same casting
or between the properties of castings and those of a test bar casting from the same metal. (See Appendix X1.)
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 The following documents, of the issue in effect on date of casting purchase, form, part of this specification to the extent
referenced herein:
2.2 ASTM Standards:
B22/B22M Specification for Bronze Castings for Bridges and Turntables
B61 Specification for Steam or Valve Bronze Castings
B62 Specification for Composition Bronze or Ounce Metal Castings
B66 Specification for Bronze Castings for Steam Locomotive Wearing Parts
B67 Specification for Car and Tender Journal Bearings, Lined
B148 Specification for Aluminum-Bronze Sand Castings
B176 Specification for Copper-Alloy Die Castings
B193 Test Method for Resistivity of Electrical Conductor Materials
B194 Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar
B208 Practice for Preparing Tension Test Specimens for Copper Alloy Sand, Permanent Mold, Centrifugal, and Continuous
Castings
B271/B271M Specification for Copper-Base Alloy Centrifugal Castings
B369 Specification for Copper-Nickel Alloy Castings
B427 Specification for Gear Bronze Alloy Castings
This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.05 on Castings
and Ingots for Remelting.
Current edition approved Oct. 15, 2016April 1, 2017. Published October 2016May 2017. Originally approved in 1992. Last previous edition approved in 20142016 as
B824 – 14.B824-16. DOI: 10.1520/B0824-16.10.1520/B0824-17.
For ASME Boiler and Pressure Vessel Code application, see related specification in Section II of that code.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. 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
B824 − 17
B505/B505M Specification for Copper Alloy Continuous Castings
B584 Specification for Copper Alloy Sand Castings for General Applications
B763/B763M Specification for Copper Alloy Sand Castings for Valve Applications
B770 Specification for Copper-Beryllium Alloy Sand Castings for General Applications
B806 Specification for Copper Alloy Permanent Mold Castings for General Applications
B846 Terminology for Copper and Copper Alloys
E8/E8M Test Methods for Tension Testing of Metallic Materials
E10 Test Method for Brinell Hardness of Metallic Materials
E18 Test Methods for Rockwell Hardness of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E54 Test Methods for Chemical Analysis of Special Brasses and Bronzes (Withdrawn 2002)
E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods) (Withdrawn 2010)
E76 Test Methods for Chemical Analysis of Nickel-Copper Alloys (Withdrawn 2003)
E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
E478 Test Methods for Chemical Analysis of Copper Alloys
E581 Test Methods for Chemical Analysis of Manganese-Copper Alloys
2.3 JIS Standard:
JIS H 1068:2005 Methods for Determination of Bismuth in Copper and Copper Alloys (Japanese Industrial Standards)
3. Terminology
3.1 For definitions of terms related to copper and copper alloys, refer to Terminology B846.
3.2 Definitions of Terms Specific to this Standard:
3.2.1 lot—a collection of like final product (same alloy, temper, dimensions, as applicable) produced under the same or identical
conditions from which samples were drawn for inspection or testing, or both.
4. Materials and Manufacture
4.1 Manufacture—Mechanical properties of Copper Alloy UNS Nos. C94700, C95300, C95400, C95410, C95500, C95520, and
C96800 can be changed by heat treatment. Suggested heat treatments are given in the casting specifications containing these alloys.
5. Chemical Composition
5.1 The casting material shall conform to the chemical requirements of the casting product specification involved.
5.2 These composition limits do not preclude the presence of other elements. Limits may be established and analysis required
for unnamed elements by agreement between the manufacturer and the purchaser.
6. Mechanical Property Requirements
6.1 When tension testing is required by the casting product specification, the results shall conform to the requirements of that
specification, when tested in accordance with Test Methods E8/E8M.
6.2 When Brinell Hardness testing is required by the casting product specification, the results shall conform to the requirements
of that specification, when tested in accordance with the Test Method E10.
6.3 When Rockwell Hardness testing is required by the casting product specification, the results shall conform to the
requirements of that specification, when tested in accordance with the Test Methods E18.
7. Other Requirements
7.1 Hydrostatic Test—When specified in the purchase order, a hydrostatic test shall be performed on the castings. The details
of the test and acceptance criteria shall be established by agreement between the manufacturer and the purchaser.
7.2 Soundness—When specified in the purchase order, castings shall meet soundness requirements furnished or referenced by
the purchaser. In the absence of standards for soundness, the requirement shall be as agreed upon between the manufacturer and
the purchaser.
7.3 When Electrical Resistivity testing is required by the casting product specification, the results shall conform to the
requirements of that specification, when tested in accordance with the Test Method B193.
8. Dimensions, Mass, and Permissible Variations
8.1 The manufacturer shall be responsible for conforming to the dimensional requirements of the castings as related to the
drawing when the pattern equipment is produced by the manufacturer.
The last approved version of this historical standard is referenced on www.astm.org.
Available from Japanese Standards Association (JSA), Mita MT Bldg., 3-13-12 Mita, Minato-ku, Tokyo 108-0073, Japan, http://www.jsa.or.jp.
B824 − 17
8.2 When the pattern equipment is provided by the purchaser, the manufacturer shall be responsible for conforming to the
dimensional requirements of the castings, but with any mutually agreed to exceptions relating to the provided pattern equipment.
8.3 Where thick and thin sections of the casting adjoin, the manufacturer shall be permitted to add fillets of adequate size, where
not previously provided, subject to approval of the purchaser.
9. Workmanship, Finish, and Appearance
9.1 The surface of the casting shall be free of adhering sand, cracks, and hot tears. Other surface discontinuities shall meet visual
acceptance standards agreed upon between the manufacturer and the purchaser.
10. Sampling
10.1 Lot Size—A lot shall consist of: (1) all of the metal poured from a single furnace or crucible melt, or (2) all of the metal
poured from two or more furnaces into a single ladle, or (3) all of the metal poured from a continuous melting furnace between
charges, or (4) all of the metal poured from an individual melting furnace or group of melting furnaces having a uniform melting
stock, similar charges and the charge calculation shall be similar for all furnaces, operating during the course of one-half shift, not
to exceed 5 h.
10.2 Chemical Analysis:
10.2.1 The sample for chemical analysis shall be taken in accordance with Practice E255 for product in the final form from the
pieces selected in 10.1 and combined into one composite sample. The minimum weight of the composite sample shall be 150 g.
10.2.2 Instead of sampling as directed in 10.2.1, the manufacturer shall have the option of sampling at the time castings are
poured or from the semifinished product. When samples are taken during the course of manufacture, sampling of the finished
product by the manufacturer is not required. The number of samples taken for the determination of composition shall be as follows:
10.2.2.1 When samples are taken at the time the castings are poured, at least one sample shall be taken for each group of castings
poured from the same source of molten metal.
10.3 Tension-test bars used in meeting the requirements of 6.1 shall be separately cast for the sand, permanent mold, and
centrifugal casting processes. The results represent the properties of the metal going into castings poured from the same heat. The
mechanical properties may not be the same as the properties of the corresponding castings because of the solidification effects of
varying size, section, and design. Test bars for continuous castings are taken from the castings and therefore represent the
properties of the casting.
10.3.1 When the requirements of 6.1 have been complied with using separately cast test bars, additional tests may be performed
using test bars removed from the casting with test bar location and mechanical properties agreed upon between the manufacturer
and the purchaser. It should be noted that the minimum requirements, listed in applicable specifications, were obtained using data
from separately cast coupons. Test specimens machined from castings may not achieve these results.
11. Number of Tests and Retests
11.1 Tests:
11.1.1 A chemical analysis of each element with a specified limiting value shall be made on each lot. Chemical analysis for
residual elements is not required unless specified in the purchase order.
11.1.2 One tension test shall be performed on each lot.
11.1.3 Should the percent elongation of any tensile-test specimen be less than that specified and any part of the fracture is
outside the middle two-thirds of the gage length or in a punched or scribed mark within the reduced section, the specimen may
be discarded and replaced by another from the same lot.
11.1.4 If the result of any test fails to conform to the specified requirements, two retests shall be performed. If either retest fails
to meet the specified requirements, the lot shall be rejected.
11.1.5 Should any of the properties be less than that specified and there is a discontinuity in the cross-sectional area of the
fracture, the specimen may be discarded and replaced by another of the same lot.
11.2 Retests:
11.2.1 When requested by the manufacturer, a retest shall be permitted when test results obtained by the purchaser fail to
conform to the casting specification requirements.
11.2.2 Retesting shall be as prescribed in the casting specification for the initial test, except the number of test specimens shall
be twice that normally required for the test. Test results for all specimens shall comply with the casting specification requirements.
Failure to comply shall be cause for rejection.
11.2.3 Chemical Analysis—If one or more of the elements with specified limits fail to meet the compositional requirement of
the product specification when determined from the sample prepared in accordance with Practice E255, one retest cycle shall be
permitted with a second composite sample prepared in accordance with Practice E255.
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