ASTM B26/B26M-18e1
(Specification)Standard Specification for Aluminum-Alloy Sand Castings
Standard Specification for Aluminum-Alloy Sand Castings
ABSTRACT
This specification covers aluminum alloy sand castings except those that are for aerospace applications. The chemical compositions are determined in accordance with the specified suitable chemical and spectrochemical test methods. Addition of small amounts of modifiers and grain refining elements to the molten alloys from the remelting furnace is permitted before casting. Pure metals, recycled materials, and master alloys can also be used to make the alloys as long as the chemical composition can be analyzed and adjusted to conform to the requirements prior to pouring any casting. Castings should only be repaired using approved processes such as welding, impregnation, peening, blending, soldering, and so forth.
SCOPE
1.1 This specification2 covers aluminum-alloy sand castings designated as shown in Table 1.
1.2 This specification is for aluminum-alloy sand castings used in general purpose applications. It may not address the mechanical properties, integrity testing, and verification required for highly loaded or safety critical applications.
1.3 Alloy and temper designations are in accordance with ANSI H35.1/H35.1M.
1.4 Unless the order specifies the “M” specification designation, the material shall be furnished to the inch-pound units.
1.5 For acceptance criteria for inclusion of new aluminum and aluminum alloys and their properties in this specification, see Annex A1 and Annex A2.
1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.
1.7 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.
1.8 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
Relations
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.
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Designation: B26/B26M −18
Standard Specification for
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Aluminum-Alloy Sand Castings
This standard is issued under the fixed designation B26/B26M; 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.
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ε NOTE—Revised Footnote B of Table 4 editorially in August 2018.
1. Scope* mendations issued by the World Trade Organization Technical
2 Barriers to Trade (TBT) Committee.
1.1 This specification covers aluminum-alloy sand castings
designated as shown in Table 1.
2. Referenced Documents
1.2 This specification is for aluminum-alloy sand castings
2.1 The following documents of the issue in effect on date
used in general purpose applications. It may not address the
of material purchase form a part of this specification to the
mechanical properties, integrity testing, and verification re-
extent referenced herein:
quired for highly loaded or safety critical applications.
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2.2 ASTM Standards:
1.3 Alloy and temper designations are in accordance with
B179 Specification for Aluminum Alloys in Ingot and Mol-
ANSI H35.1/H35.1M.
ten Forms for Castings from All Casting Processes
1.4 Unless the order specifies the “M” specification
B275 PracticeforCodificationofCertainZinc,TinandLead
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designation, the material shall be furnished to the inch-pound
Die Castings (Withdrawn 2020)
units.
B557 Test Methods for Tension Testing Wrought and Cast
Aluminum- and Magnesium-Alloy Products
1.5 For acceptance criteria for inclusion of new aluminum
B557M Test Methods for Tension Testing Wrought and Cast
and aluminum alloys and their properties in this specification,
Aluminum- and Magnesium-Alloy Products (Metric)
see Annex A1 and Annex A2.
B660 Practices for Packaging/Packing of Aluminum and
1.6 The values stated in either SI units or inch-pound units
Magnesium Products
are to be regarded separately as standard. The values stated in
B666/B666M Practice for Identification Marking of Alumi-
each system may not be exact equivalents; therefore, each
num and Magnesium Products
system shall be used independently of the other. Combining
B881 Terminology Relating toAluminum- and Magnesium-
values from the two systems may result in nonconformance
Alloy Products
with the standard.
B917/B917M Practice for Heat Treatment of Aluminum-
1.7 This standard does not purport to address all of the
Alloy Castings From All Processes
safety concerns, if any, associated with its use. It is the
B985 Practice for SamplingAluminum Ingots, Billets, Cast-
responsibility of the user of this standard to establish appro-
ings and Finished or Semi-Finished Wrought Aluminum
priate safety, health, and environmental practices and deter-
Products for Compositional Analysis
mine the applicability of regulatory limitations prior to use.
D3951 Practice for Commercial Packaging
1.8 This international standard was developed in accor-
E29 Practice for Using Significant Digits in Test Data to
dance with internationally recognized principles on standard-
Determine Conformance with Specifications
ization established in the Decision on Principles for the
E34 Test Methods for Chemical Analysis of Aluminum and
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Development of International Standards, Guides and Recom-
Aluminum-Base Alloys (Withdrawn 2017)
E94/E94M Guide for Radiographic Examination Using In-
dustrial Radiographic Film
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This specification is under the jurisdiction of ASTM Committee B07 on Light
Metals and Alloys and is the direct responsibility of Subcommittee B07.01 on
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Aluminum Alloy Ingots and Castings. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 15, 2018. Published June 2018. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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approved in 1918. Last previous edition approved in 2014 as B26/B26M – 14 . Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/B0026_B0026M-18E01. the ASTM website.
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For ASME Boiler and Pressure Vessel Code applications see related Specifi- The last approved version of this historical standard is referenced on
cation SB-26/SB-26M in Section II of that Code. www.astm.org.
*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
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B26/B26M − 18
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