ASTM B26/B26M-14e1
(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. (A) Contains silver 0.40–1.0 %.(B) If iron exceeds 0.45 %, manganese content shall not be less than one half of the iron content.(C) Contains beryllium 0.003–0.007 %, boron 0.005 % max.(D) 710.0 formerly A712.0, 712.0 formerly D712.0, 851.0 formerly A850.0, 852.0 formerly B850.0.(E) ASTM alloy designations are recorded in Practice B275.(F) “Others” includes listed elements for which no specific limit is shown as well as unlisted metallic elements. The producer may analyze samples for trace elements not specified in the specification. However, such analysis is not required and may not cover all metallic “Others” elements. Should any analysis by the producer or the purchaser establish that an “Others” element exceeds the limit of “Each” or that the aggregate of several “Others” elements exceeds the limit of “Total,” the material shall be considered nonconforming.(G) Other Elements–Total shall be the sum of unspecified metallic elements 0.010 % or more, rounded to the second decimal before determining the sum.
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. Unified Numbering System alloy designations are in accordance with Practice E527.
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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:B26/B26M −14
Standard Specification for
1
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.
1
ε NOTE—Table 1 was updated in February 2015 to include footnotes E, F, and G.
3
1. Scope* 2.2 ASTM Standards:
2 B179 Specification for Aluminum Alloys in Ingot and Mol-
1.1 This specification covers aluminum-alloy sand castings
ten Forms for Castings from All Casting Processes
designated as shown in Table 1.
B275 PracticeforCodificationofCertainZinc,TinandLead
1.2 This specification is for aluminum-alloy sand castings
Die Castings
used in general purpose applications. It may not address the
B557 Test Methods for Tension Testing Wrought and Cast
mechanical properties, integrity testing, and verification re-
Aluminum- and Magnesium-Alloy Products
quired for highly loaded or safety critical applications.
B557M Test Methods for Tension Testing Wrought and Cast
1.3 Alloy and temper designations are in accordance with
Aluminum- and Magnesium-Alloy Products (Metric)
ANSI H35.1/H35.1M. Unified Numbering System alloy des-
B660 Practices for Packaging/Packing of Aluminum and
ignations are in accordance with Practice E527.
Magnesium Products
B881 Terminology Relating toAluminum- and Magnesium-
1.4 Unless the order specifies the “M” specification
Alloy Products
designation, the material shall be furnished to the inch-pound
B985 Practice for SamplingAluminum Ingots, Billets, Cast-
units.
ings and Finished or Semi-Finished Wrought Aluminum
1.5 For acceptance criteria for inclusion of new aluminum
Products for Compositional Analysis
and aluminum alloys and their properties in this specification,
B917/B917M Practice for Heat Treatment of Aluminum-
see Annex A1 and Annex A2.
Alloy Castings from All Processes
1.6 The values stated in either SI units or inch-pound units
D3951 Practice for Commercial Packaging
are to be regarded separately as standard. The values stated in
E29 Practice for Using Significant Digits in Test Data to
each system may not be exact equivalents; therefore, each
Determine Conformance with Specifications
system shall be used independently of the other. Combining
E34 Test Methods for Chemical Analysis of Aluminum and
values from the two systems may result in nonconformance
Aluminum-Base Alloys
with the standard.
E94 Guide for Radiographic Examination
1.7 This standard does not purport to address all of the E155 Reference Radiographs for Inspection of Aluminum
safety concerns, if any, associated with its use. It is the and Magnesium Castings
responsibility of the user of this standard to establish appro- E165 Practice for Liquid Penetrant Examination for General
priate safety and health practices and determine the applica- Industry
bility of regulatory limitations prior to use. E527 Practice for Numbering Metals and Alloys in the
Unified Numbering System (UNS)
2. Referenced Documents
E607 Test Method for Atomic Emission Spectrometric
2.1 The following documents of the issue in effect on date
Analysis Aluminum Alloys by the Point to Plane Tech-
4
of material purchase form a part of this specification to the
nique Nitrogen Atmosphere (Withdrawn 2011)
extent referenced herein:
E716 Practices for Sampling and Sample Preparation of
Aluminum and Aluminum Alloys for Determination of
1
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
3
Aluminum Alloy Ingots and Castings. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Oct. 1, 2014. Published October 2014. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1918. Last previous edition approved in 2012 as B26/B26M – 12. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/B0026_B0026M-14E01. the ASTM website.
2 4
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−14
Chemical Composition by Spectrochemical Analysis 4.2.2 Whether castings or test bars, or bo
...
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.
´1
Designation: B26/B26M − 14 B26/B26M − 14
Standard Specification for
1
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.
1
ε NOTE—Table 1 was updated in February 2015 to include footnotes E, F, and G.
1. Scope*
2
1.1 This specification 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. Unified Numbering System alloy designations
are in accordance with Practice E527.
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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2.1 The following documents of the issue in effect on date of material purchase form a part of this specification to the extent
referenced herein:
3
2.2 ASTM Standards:
B179 Specification for Aluminum Alloys in Ingot and Molten Forms for Castings from All Casting Processes
B275 Practice for Codification of Certain Zinc, Tin and Lead Die Castings
B557 Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products
B557M Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products (Metric)
B660 Practices for Packaging/Packing of Aluminum and Magnesium Products
B881 Terminology Relating to Aluminum- and Magnesium-Alloy Products
B985 Practice for Sampling Aluminum Ingots, Billets, Castings and Finished or Semi-Finished Wrought Aluminum Products for
Compositional Analysis
B917/B917M Practice for Heat Treatment of Aluminum-Alloy Castings from All Processes
D3951 Practice for Commercial Packaging
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E34 Test Methods for Chemical Analysis of Aluminum and Aluminum-Base Alloys
1
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 Aluminum
Alloy Ingots and Castings.
Current edition approved Oct. 1, 2014. Published October 2014. Originally approved in 1918. Last previous edition approved in 2012 as B26/B26M – 12. DOI:
10.1520/B0026_B0026M-14.10.1520/B0026_B0026M-14E01.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SB-26/SB-26M in Section II of that Code.
3
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’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
1
---------------------- Page: 1 ----------------------
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B26/B26M − 14
TABLE 1 Chemical Composition Limits
NOTE 1—When single units are shown, these indicate the maximum amounts permitted.
NOTE 2—Analysis shall be made for the elements for which limits are shown in this table.
NOTE 3—The following applies to all specified limits in this table: For purposes of determining conformance to these limits, an observed value or a
calculated value obtained fro
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