ASTM B618/B618M-11a
(Specification)Standard Specification for Aluminum-Alloy Investment Castings
Standard Specification for Aluminum-Alloy Investment Castings
ABSTRACT
This specification covers aluminum-alloy investment castings. Unless otherwise specified, only aluminum alloy conforming to the requirements shall be used in the remelting furnace from which molten metal is taken for pouring directly into castings. The castings shall conform to the chemical composition requirements specified. The determination of chemical composition shall be made in accordance with suitable chemical (test methods E 34), or spectrochemical (test methods E 607 and E 1251) methods. Unless otherwise specified, only aluminum alloy conforming to the requirements shall be used in the remelting furnace from which molten metal is taken for pouring directly into castings. Foundry control shall consist of examination of castings by radiographic or other approved methods for determining internal discontinuities until the gating, pouring, and other foundry practices have been established to produce castings meeting the required quality standards. The tensile properties shall be determined in accordance with test methods B 557 and B 557M. Heat treatment of castings shall be performed in accordance with practice B 917/B 917M.
SCOPE
1.1 This specification covers aluminum-alloy investment castings designated as shown in Table 1.
1.2 This specification is for aluminum-alloy investment 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). 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 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.
TABLE 1 Chemical Composition Requirements
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 acceptance and rejection, an observed value or a calculated value obtained from analysis should be rounded off to the nearest unit in the last right-hand place of figures used in expressing the specified limit (Practice E29). AlloyComposition, % ANSIA UNSSiliconIronCopper Man-
ganese Mag-
nesium Chro-
mium NickelZincTitan-
iumTinOtherB
ElementsAluminum EachTotalC 201.0 A020100.100.154.0–5.2 0.20–0.500.15–0.55... ......0.15–0.35...D0.050.10remainder 204.0 A020400.200.354.2–5.0 0.100.15–0.35...0.050.100.15–0.30 0.050.05 0.15remainder 242.0 A024200.71.03.5–4.5 0.351.2–1.80.251.7–2.30.350.25 ...0.050.15remainder 295.0 A029500.7–1.51.04.0–5.00.350.03......0.350.25 ...0.050.15remainder 319.0 A031905.5–6.51.03.0–4.00.500.10...0.351.00.25 ......0.50remainder 328.0 A032807.5–8.51.01.0–2.00.20–0.60.20–0.60.35 0.251.50.25......0.50remainder 355.0 A035504.5–5.50.6E1.0–1.50.50E0.40–0.60.25... 0.350.25...0.050.15remainder C355.0 A335504.5–5.50.201.0–1.50.100.40–0.6... ...0.100.20...0.05 0.15remainder 356.0 A035606.5–7.50.6E0.250.35E0.20–0.45...... 0.350.25...0.050.15remainder A356.0 A135606.5–...
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Designation: B618/B618M −11a
StandardSpecification for
1
Aluminum-Alloy Investment Castings
This standard is issued under the fixed designation B618/B618M; 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 Department of Defense.
2
1. Scope* 2.2 ASTM Standards:
B179 Specification for Aluminum Alloys in Ingot and Mol-
1.1 This specification covers aluminum-alloy investment
ten Forms for Castings from All Casting Processes
castings designated as shown in Table 1.
B275 Practice for Codification of Certain Nonferrous Metals
1.2 This specification is for aluminum-alloy investment
and Alloys, Cast and Wrought
castings used in general purpose applications. It may not
B557 Test Methods for Tension Testing Wrought and Cast
address the mechanical properties integrity testing and verifi-
Aluminum- and Magnesium-Alloy Products
cation required 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)
B660 Practices for Packaging/Packing of Aluminum and
ANSI H35.1/H35.1 (M). The equivalent Unified Numbering
System alloy designations are in accordance with Practice Magnesium Products
B881 Terminology Relating toAluminum- and Magnesium-
E527.
Alloy Products
1.4 Unless the order specifies the “M” specification
B917/B917M Practice for Heat Treatment of Aluminum-
designation, the material shall be furnished to the inch-pound
Alloy Castings from All Processes
units.
D3951 Practice for Commercial Packaging
1.5 For acceptance criteria for inclusion of new aluminum
E29 Practice for Using Significant Digits in Test Data to
and aluminum alloys and their properties in this specification,
Determine Conformance with Specifications
see Annex A1 and Annex A2.
E34 Test Methods for Chemical Analysis of Aluminum and
Aluminum-Base Alloys
1.6 Units—The values stated in either SI units or inch-
E94 Guide for Radiographic Examination
pound units are to be regarded separately as standard. The
E155 Reference Radiographs for Inspection of Aluminum
values stated in each system may not be exact equivalents;
and Magnesium Castings
therefore,eachsystemshallbeusedindependentlyoftheother.
E165 Practice for Liquid Penetrant Examination for General
Combining values from the two systems may result in noncon-
Industry
formance with the standard.
E527 Practice for Numbering Metals and Alloys in the
1.7 This standard does not purport to address all of the
Unified Numbering System (UNS)
safety concerns, if any, associated with its use. It is the
E607 Test Method for Atomic Emission Spectrometric
responsibility of the user of this standard to establish appro-
Analysis Aluminum Alloys by the Point to Plane Tech-
priate safety and health practices and determine the applica-
3
nique Nitrogen Atmosphere (Withdrawn 2011)
bility of regulatory limitations prior to use.
E716 Practices for Sampling and Sample Preparation of
Aluminum and Aluminum Alloys for Determination of
2. Referenced Documents
Chemical Composition by Spectrochemical Analysis
2.1 The following documents of the issue in effect on the
E1251 Test Method for Analysis of Aluminum and Alumi-
date of purchase form a part of this specification to the extent
num Alloys by Spark Atomic Emission Spectrometry
referenced herein:
E2422 Digital Reference Images for Inspection of Alumi-
num Castings
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 Dec. 1, 2011. Published January 2012. Originally the ASTM website.
3
approved in 1977. Last previous edition approved in 2011 as B618/B618M – 11. The last approved version of this historical standard is referenced on
DOI: 10.1520/B0618_B0618M-11A. 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
---------------------- Page: 1 ----------------------
B618/B618M − 11a
2
TABLE 1 Chemical Composition Requirements
NOTE 1—When single units are shown, these indicate the maximum amounts permitted.
NOTE 2—Analysis shall be made for the elements
...
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:B618/B618M–11 Designation: B618/B618M – 11a
Standard Specification for
1
Aluminum-Alloy Investment Castings
This standard is issued under the fixed designation B618/B618M; 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 Department of Defense.
1. Scope*
1.1 This specification covers aluminum-alloy investment castings designated as shown in Table 1.
1.2This specification1.2 This specification is for aluminum-alloy investment 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 withANSI 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 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 the date of purchase 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 Nonferrous Metals and Alloys, Cast and Wrought
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
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
E94 Guide for Radiographic Examination
E155 Reference Radiographs for Inspection of Aluminum and Magnesium Castings
E165 Practice for Liquid Penetrant Examination for General Industry
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
E607 Test Method for Atomic Emission Spectrometric Analysis Aluminum Alloys by the Point to Plane Technique Nitrogen
Atmosphere
1
This specification is under the jurisdiction ofASTM Committee B07 on Light Metals andAlloys and is the direct responsibility of Subcommittee B07.01 onAluminum
Alloy Ingots and Castings.
Current edition approved Nov.Dec. 1, 2011. Published December 2011.January 2012. Originally approved in 1977. Last previous edition approved in 20102011 as
B618/B618M – 101. DOI: 10.1520/B0618_B0618M-11A.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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 ----------------------
B618/B618M – 11a
2
TABLE 1 Chemical Composition Requirements
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 limi
...
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