ASTM B85/B85M-18
(Specification)Standard Specification for Aluminum-Alloy Die Castings
Standard Specification for Aluminum-Alloy Die Castings
ABSTRACT
This specification covers aluminum-alloy die castings of all compositions. Unless otherwise specified, only aluminum alloy conforming to the requirements of Specification B 179 or producer's foundry scrap shall be used in the remelting furnace from which molten metal is taken for pouring directly into castings. Additions of small amounts of modifiers and grain refining elements or alloys are permitted. Pure materials, recycled materials, and master alloys and material not conforming to Specification B 179 may be used to make alloys conforming to this specification, provided chemical analysis can be taken and adjusted to conform to the chemical requirements prior to pouring any castings. The castings shall be supplied such that they can be laid out and machined to the final dimensions specified on the blueprints or drawings.
SCOPE
1.1 This specification covers aluminum-alloy die castings designated as shown in Table 1. (A) When single units are shown, they indicate the maximum amounts permitted.(B) Analysis shall be made for the elements for which limits are shown in this table.(C) 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 from analysis shall be rounded to the nearest unit in the last right-hand place of figures used in expressing the specified limit in accordance with the rounding-off method of Practice E29.(D) In case of discrepancy between the values listed in Table 1 and those listed in the âDesignations and Composition Limits for Aluminum Alloys in the Form of Castings and Ingot (known as the “Pink Sheets”), the composition limits registered with the Aluminum Association and published in the “Pink Sheets” shall be considered the controlling composition.(E) “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 registration or 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.(F) The sum of those “Others” metallic elements 0.010 % or more each, expressed to the second decimal before determining the sum(G) Alloys 360.0, 380.0, 413.0, C443.0 and 518.0 are suitable for the production of die casting by either the hot-chamber or the cold-chamber process. Die castings of alloys A360.0, A380.0, 383.0, 384.0, and A413.0 may be made only in cold-chamber machines.(H) With respect to mechanical properties, alloys A380.0, 383.0 and 384.0 are substantially interchangeable.(I) The Aluminum Association ruling on the number of decimal places to which Mg percent is expressed is exempted for some long standing alloys. See A2.2.6.(J) For a cross reference of current and former alloy designations see the Aluminum Association’s “Designations and Chemical Composition Limits for Aluminum Alloys in the Form of Castings and Ingot (‘The Pink Sheets’)”.(K) A360.1, A380.1, and A413.1 ingot is used to produce 360.0 and A360.0; 380.0 and A380.0; 413.0 and A413.0 castings, respectively.
1.2 This specification is for aluminum-alloy die 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/H35.1(M).
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 U...
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Designation: B85/B85M −18
Standard Specification for
1
Aluminum-Alloy Die Castings
This standard is issued under the fixed designation B85/B85M; 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* 2. Referenced Documents
2.1 The following documents of the issue in effect on date
1.1 This specification covers aluminum-alloy die castings
of order acceptance form a part of this specification to the
designated as shown in Table 1.
extent referenced herein:
1.2 This specification is for aluminum-alloy die castings
2
2.2 ASTM Standards:
used in general purpose applications. It may not address the
B179 Specification for Aluminum Alloys in Ingot and Mol-
mechanical properties, integrity testing, and verification re-
ten Forms for Castings from All Casting Processes
quired for highly loaded or safety critical applications.
B275 PracticeforCodificationofCertainZinc,TinandLead
1.3 Alloy and temper designations are in accordance with
Die Castings
ANSI H35.1/H35.1(M).
B557 Test Methods for Tension Testing Wrought and Cast
Aluminum- and Magnesium-Alloy Products
1.4 Unless the order specifies the “M” specification
B557M Test Methods for Tension Testing Wrought and Cast
designation, the material shall be furnished to the inch-pound
Aluminum- and Magnesium-Alloy Products (Metric)
units.
B660 Practices for Packaging/Packing of Aluminum and
1.5 For acceptance criteria for inclusion of new aluminum
Magnesium Products
and aluminum alloys and their properties in this specification,
B666/B666M Practice for Identification Marking of Alumi-
see Annex A1 and Annex A2.
num and Magnesium Products
B881 Terminology Relating toAluminum- and Magnesium-
1.6 Units—The values stated in either SI units or inch-
Alloy Products
pound units are to be regarded separately as standard. The
B985 Practice for SamplingAluminum Ingots, Billets, Cast-
values stated in each system may not be exact equivalents;
ings and Finished or Semi-Finished Wrought Aluminum
therefore,eachsystemshallbeusedindependentlyoftheother.
Products for Compositional Analysis
Combining values from the two systems may result in non-
D3951 Practice for Commercial Packaging
conformance with the standard.
E8/E8M Test Methods for Tension Testing of Metallic Ma-
1.7 This standard does not purport to address all of the
terials
safety concerns, if any, associated with its use. It is the
E23 Test Methods for Notched Bar Impact Testing of Me-
responsibility of the user of this standard to establish appro-
tallic Materials
priate safety, health, and environmental practices and deter-
E29 Practice for Using Significant Digits in Test Data to
mine the applicability of regulatory limitations prior to use.
Determine Conformance with Specifications
1.8 This international standard was developed in accor- E34 Test Methods for Chemical Analysis of Aluminum and
3
Aluminum-Base Alloys (Withdrawn 2017)
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the E505 Reference Radiographs for Inspection of Aluminum
Development of International Standards, Guides and Recom- and Magnesium Die Castings
mendations issued by the World Trade Organization Technical E607 Test Method for Atomic Emission Spectrometric
Barriers to Trade (TBT) Committee. Analysis Aluminum Alloys by the Point to Plane Tech-
3
nique Nitrogen Atmosphere (Withdrawn 2011)
1 2
This specification is under the jurisdiction of ASTM Committee B07 on Light For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Metals and Alloys and is the direct responsibility of Subcommittee B07.01 on contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Aluminum Alloy Ingots and Castings. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved May 1, 2018. Published May 2018. Originally the ASTM website.
3
approved in 1931. Last previous edition approved in 2014 as B85/B85M – 14. DOI: The last approved version of this historical standard is referenced on
10.1520/B0085_B0085M-18. 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
1
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B85/B85M − 18
A,B,C,D
TABLE 1 Chemical Requirements
E
Others Al
J
Desig. Si Fe Cu Mn Mg Cr Ni Zn Ti Ag Be Pb Sn Zr FNs
F
Each Total Min.
G
360.0 9.0–10.0 2.0 0.6 0.35 0.40–0.6 . . . 0.50 0.50 . . . .
...
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: B85/B85M − 14 B85/B85M − 18
Standard Specification for
1
Aluminum-Alloy Die Castings
This standard is issued under the fixed designation B85/B85M; 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 covers aluminum-alloy die castings of all compositions. Thirteen of the most commonly die cast alloy
compositions are specified, designated as shown in Table 1.
1.2 This specification is not intended for aluminum-alloy die castings used in aerospace applications.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/H35.1(M). The equivalent 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 Units—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 non-conformance 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory requirementslimitations 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.
2. Referenced Documents
2.1 The following documents of the issue in effect on date of order acceptance form a part of this specification to the extent
referenced herein:
2
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
B666/B666M Practice for Identification Marking 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
D3951 Practice for Commercial Packaging
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, 2014May 1, 2018. Published October 2014May 2018. Originally approved in 1931. Last previous edition approved in 20132014 as
B85/B85M – 13.B85/B85M – 14. DOI: 10.1520/B0085_B0085M-14.10.1520/B0085_B0085M-18.
2
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 ----------------------
B85/B85M − 18
A,B,C
TABLE 1 Chemical Requirements
D E
Designation Others
AA No. (old)
F
UNS Si Fe Cu Mn Mg Cr Ni Zn Ti Sn Each TotalAluminum
(ANSI) ASTM
360.0 SG100B A03600 9.00-10.00 2.00 0.60 0.35 0.4- . . . 0.50 0.50 . . . 0.15 . . . 0
...
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