ASTM B894-10(2015)
(Specification)Standard Specification for ACuZinc5
Standard Specification for ACuZinc5
ABSTRACT
This specification covers AcuZinc5, zinc-copper-aluminum alloy die castings. The metal used in the manufacture of die castings shall be zinc alloy of a specified chemical composition conforming to the specified requirements. Tensile, yield strength, elongation, and hardness properties shall be determined by tension and hardness tests. The die castings shall be of uniform quality, free of injurious discontinuities that will adversely affect their serviceability.
SCOPE
1.1 This specification covers ACuZinc5, zinc-copper-aluminum alloy die castings. (UNS Z46541).3
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.
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Designation:B894 −10 (Reapproved 2015)
Standard Specification for
1 2
ACuZinc5 (Zinc-Copper-Aluminum) Alloy Die Castings
This standard is issued under the fixed designation B894; 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.
1. Scope E536 Test Methods for ChemicalAnalysis of Zinc and Zinc
Alloys
1.1 This specification covers ACuZinc5, zinc-copper-
2.3 Federal Standards:
aluminum alloy die castings. (UNS Z46541).
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
1.2 The values stated in SI units are to be regarded as
2.4 ISO Standards:
standard. No other units of measurement are included in this
ISO 3815-1 Zinc and zinc alloys — Part 1:Analysis of solid
standard.
samples by optical emission spectrometry
1.3 This standard does not purport to address all of the
ISO 3815-2 Zinc and zinc alloys — Part 2: Analysis by
safety concerns, if any, associated with its use. It is the
inductively coupled plasma optical emission spectrometry
responsibility of the user of this standard to become familiar
2.5 Military Standard:
with all hazards including those identified in the appropriate
MIL-P-116 Methods of Preservation
Material Safety Data Sheet (MSDS) for this product/material
MIL-STD-129 Marking for Shipment and Storage
as provided by the manufacturer, to establish appropriate
2.6 NADCA Standard:
safety and health practices, and determine the applicability of
NADCA Product Specification Standards for Die Castings
regulatory limitations prior to use.
3. Terminology
2. Referenced Documents
3.1 Terms shall be defined in accordance with Terminology
2.1 The following documents of the issue in effect on date
B899.
of order acceptable form a part of this specification to the
extent referenced herein:
3.2 Definitions of Terms Specific to This Standard:
3.2.1 die casting, n—a casting process in which molten
2.2 ASTM Standards:
metal is injected under high velocity and pressure into a metal
B892 Specification forACuZinc5 (Zinc-Copper-Aluminum)
die and solidified, also a product produced by such a process.
Alloy in Ingot Form for Die Castings
Alternately known as pressure die casting.
B899 Terminology Relating to Non-ferrous Metals and Al-
loys
4. Ordering Information
B949 Specification for General Requirements for Zinc and
Zinc Alloy Products 4.1 Orders for die castings shall include the following basic
E10 Test Method for Brinell Hardness of Metallic Materials
information in addition to the information specified in Speci-
E29 Practice for Using Significant Digits in Test Data to fication B949, Section 4:
Determine Conformance with Specifications
4.1.1 Part name and number,
E527 Practice for Numbering Metals and Alloys in the 4.1.2 Alloy (Table 1), and
Unified Numbering System (UNS)
4.1.3 Drawing of die casting, when required, giving all
necessary dimensions and showing latest revisions and allow-
ances for machining, if any. Location of ejector pin marks or
ACuZinc and ACuZinc5 are registered trade names of the General Motors
Corporation.
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
B02.04 on Zinc and Cadmium. 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
Current edition approved May 1, 2015. Published May 2015. Originally www.access.gpo.gov.
ε1
approved in 1999. Last previous edition approved in 2010 as B894 – 10 . DOI: Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
10.1520/B0894-10R15. 4th Floor, New York, NY 10036, http://www.ansi.org.
3 7
See Footnote B in Table 1. Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.dodssp.daps.mil.
Standards volume information, refer to the standard’s Document Summary page on Available from North American Die Casting Association 241 Holbrook Dr
the ASTM website. Wheeling, Illinois 60090-5809, http://www.diecasting.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
B894−10 (2015)
TABLE 1 ACuZinc5 Chemical Requirements, Composition, Zinc-
6.2 For normal inspection purposes, an inspection lot shall
A
Copper-Aluminum Die Castings
consist of the production from each die during a single
Composition,%
production run, as defined and recorded by the producer, and
Elements
B
(Z46541)
shipped, or available for shipment, at one time.
Copper 5.0 to 6.0
6.2.1 The producer or supplier shall examine each die
Aluminum 2.5 to 3.3
casting of a randomly or statistically selected sample to
Magnesium 0.025 - 0.05
Iron 0.075 max determine conformance to the requirements of the contract,
Lead 0.005 max
purchase order, or part drawing. The results of this inspection
Cadmium 0.004 max
shall be recorded.
Tin 0.003 max
C
Zinc Remainder
6.2.1.1 Unless otherwise specified in the contract, purchase
A
order, or part drawing, detailed dimensional conformance shall
The following applies to all specified limits in this table: For purposes of
determining conformance with this specification, the observed value or calculated
normally be determined on one or more production samples.
value obtained from analysis shall be rounded off to the nearest unit in the last
6.2.2 When specified in the contact, purchase order, or part
right-hand place of figures used in expressing the specified limit, in accordance
with the rounding method of Practice E29.
drawing, special inspection lot definitions may be established,
B
UNS designations were established in accordance with Practice E527.
for a specific part.
C
Determined arithmetically by difference.
7. Chemical Requirements
7.1 Limits—The die casting shall conform to the require-
ments as to chemical composition in Table 1. Conformance
shall be determined by the producer by analyzing samples
parting lines shall be at the option of the producer, unless
taken at the time castings are made. If the producer has
specifically designated on the drawing.
determined the chemical composition of the metal during the
4.2 Additional tests, options and special inspection require-
course of manufacture, he shall not be required to sample and
ments as provided below should be justified only on the basis
analyze the finished product.
of need. These shall be specified in the contract or purchase
7.1.1 When a detailed chemical analysis is required with a
order,asadditionalproceduresandextendeddeliverytimemay
shipment, is shall be called for in the contract or purchase
be involved.
order.
4.2.1 Chemical analysis (7.1.1),
7.1.2 If the producer’s or supplier’s method of composition
4.2.2 Quality assurance (Section 6),
control is acceptable, sampling for chemical analysis may be
4.2.3 Special proof tests or mechanical properties (Section
waived at the discretion of the purchaser.
8),
7.2 Number of Samples—When required, samples for deter-
4.2.4 General quality options for internal soundness or for
mination of chemical composition shall be taken to represent
finish (Section 10),
the following:
4.2.5 Source inspection (Section 11),
7.2.1 A sample shall be taken from each of two representa-
4.2.6 Certification (Section 13),
tive castings selected from each lot defined in 6.2.
4.2.7 Marking for identification (Section 14), and
4.2.8 Special packaging (Section 15). 7.3 Methods of Sampling—Samples from die castings for
determination of chemical composition shall be taken in
accordance with Specification B949, Section 6.5 and 6.6.
5. Materials and Manufacture
5.1 The metal used in the manufacture of die castings shall 7.4 Method of Analysis—The determination of chemical
composition shall be made in accordance with Specification
be zinc alloy of a specified chemical composition conforming
B949, Section 5.2.2.
to the requirements of Specification B892.
7.4.1 Incaseofdispute,theresultssecuredbyTestMethods
5.2 The material covered by this specification shall be of
E536, ISO 3815-1, or ISO 3815-2 shall be the basis of
uniform quality and shall be free of harmful contamination.
acceptance.
NOTE 1—Test Methods E536 is not directly applicable to ACuZinc5.
6. Quality Assurance
ISO 3815-1and ISO 3815-2 are generic methods applied to zinc and zinc
alloys. Each of the methods may be modified and formatted for the alloy
6.1 Responsibility for Inspection—When specified in the
to be assayed. An experienced chemist, using suitable and/or traceable
contract or purchase order, the producer or supplier is respon-
standards along with valid quality assurance techniques,
...
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: B894 − 10 B894 − 10 (Reapproved 2015)
Standard Specification for
1 2
ACuZinc5 (Zinc-Copper-Aluminum) Alloy Die Castings
This standard is issued under the fixed designation B894; 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.
ε NOTE—Density units in Table X1.1 were editorially corrected in October 2011.
1. Scope*Scope
1.1 This specification covers ACuZinc5, zinc-copper-aluminum alloy die castings. (UNS Z46541).
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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 become familiar with all hazards including those identified in the appropriate Material Safety Data
Sheet (MSDS) for this product/material as provided by the manufacturer, 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 order acceptable form a part of this specification to the extent
referenced herein:
2.2 ASTM Standards:
B892 Specification for ACuZinc5
B899 Terminology Relating to Non-ferrous Metals and Alloys
B949 Specification for General Requirements for Zinc and Zinc Alloy Products
E10 Test Method for Brinell Hardness of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
E536 Test Methods for Chemical Analysis of Zinc and Zinc Alloys
2.3 Federal Standards:
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
2.4 ISO Standards:
ISO 3815-1 Zinc and zinc alloys — Part 1: Analysis of solid samples by optical emission spectrometry
ISO 3815-2 Zinc and zinc alloys — Part 2: Analysis by inductively coupled plasma optical emission spectrometry
2.5 Military Standard:
MIL-P-116 Methods of Preservation
MIL-STD-129 Marking for Shipment and Storage
2.6 NADCA Standard:
NADCA Product Specification Standards for Die Castings
ACuZinc and ACuZinc5 are registered trade names of the General Motors Corporation.
This specification is under the jurisdiction of ASTM Committee B02 on Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee B02.04 on Zinc
and Cadmium.
Current edition approved April 1, 2010May 1, 2015. Published April 2010May 2015. Originally approved in 1999. Last previous edition approved in 20092010 as
ε1
B894 - 09.B894 – 10 . DOI: 10.1520/B0894-10E01.10.1520/B0894-10R15.
See Footnote B in Table 1.
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.
Available from U.S. Government Printing Office Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
www.access.gpo.gov.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://www.dodssp.daps.mil.
Available from North American Die Casting Association 241 Holbrook Dr Wheeling, Illinois 60090-5809, http://www.diecasting.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
B894 − 10 (2015)
3. Terminology
3.1 Terms shall be defined in accordance with Terminology B899.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 die casting, n—a casting process in which molten metal is injected under high velocity and pressure into a metal die and
solidified, also a product produced by such a process. Alternately known as pressure die casting.
4. Ordering Information
4.1 Orders for die castings shall include the following basic information in addition to the information specified in Specification
B949, Section 4:
4.1.1 Part name and number,
4.1.2 Alloy (Table 1), and
4.1.3 Drawing of die casting, when required, giving all necessary dimensions and showing latest revisions and allowances for
machining, if any. Location of ejector pin marks or parting lines shall be at the option of the producer, unless specifically designated
on the drawing.
4.2 Additional tests, options and special inspection requirements as provided below should be justified only on the basis of need.
These shall be specified in the contract or purchase order, as additional procedures and extended delivery time may be involved.
4.2.1 Chemical analysis (7.1.1),
4.2.2 Quality assurance (Section 6),
4.2.3 Special proof tests or mechanical properties (Section 8),
4.2.4 General quality options for internal soundness or for finish (Section 10),
4.2.5 Source inspection (Section 11),
4.2.6 Certification (Section 13),
4.2.7 Marking for identification (Section 14), and
4.2.8 Special packaging (Section 15).
5. Materials and Manufacture
5.1 The metal used in the manufacture of die castings shall be zinc alloy of a specified chemical composition conforming to
the requirements of Specification B892.
5.2 The material covered by this specification shall be of uniform quality and shall be free of harmful contamination.
TABLE 1 ACuZinc5 Chemical Requirements, Composition, Zinc-
A
Copper-Aluminum Die Castings
Composition, %
Elements
B
(Z46541)
Copper 5.0 to 6.0
Aluminum 2.5 to 3.3
Magnesium 0.025 - 0.05
Iron 0.075 max
Lead 0.005 max
Cadmium 0.004 max
Tin 0.003 max
C
Zinc Remainder
TABLE 1 ACuZinc5 Chemical Requirements, Composition, Zinc-
A
Copper-Aluminum Die Castings
Composition,%
Elements
B
(Z46541)
Copper 5.0 to 6.0
Aluminum 2.5 to 3.3
Magnesium 0.025 - 0.05
Iron 0.075 max
Lead 0.005 max
Cadmium 0.004 max
Tin 0.003 max
C
Zinc Remainder
A
The following applies to all specified limits in this table: For purposes of
determining conformance with this specification, the observed value or calculated
value obtained from analysis shall be rounded off to the nearest unit in the last
right-hand place of figures used in expressing the specified limit, in accordance
with the rounding method of Practice E29.
B
UNS designations were established in accordance with Practice E527.
C
Determined arithmetically by difference.
B894 − 10 (2015)
6. Quality Assurance
6.1 Responsibility for Inspection—When specified in the contract or purchase order, the producer or supplier is responsible for
the performance of all inspection and test requirements specified herein. Except as otherwise specified in the contract or order, the
producer or supplier may use his own or any other suitable facilities for the performance of the inspection and test requirements
specified herein, unless disapproved by the purchaser. The purchaser shall have the right to perform any of the inspections and tests
set forth in this specification. Quality assurance standards shall be agreed upon between the producer or supplier and purchaser
at the time a contract or order is placed.
6.2 For normal inspection purposes, an inspection lot shall consist of the production from each die during a single production
run, as defined and recorded by the producer, and shipped, or available for shipment, at one time.
6.2.1 The producer or supplier shall examine each die casting of a randomly or statistically selected sample to determine
conformance to the requirements of the contract, purchase order, or part drawing. The results of this inspection shall be recorded.
6.2.1.1 Unless otherwise specified in the contract, purchase order, or part drawing, detailed dimensional conformance shall
normally be determined on one or more production samples.
6.2.2 When specified in the contact, purchase order, or part drawing, special inspection lot definitions may be established, for
a specific part.
7. Chemical Requirements
7.1 Limits—The die casting shall conform to the requirements as to chemical composition in Table 1. Conformance shall be
determined by the producer by analyzing samples taken at the time castings are made. If the producer has determined the chemical
composition of the metal during the course of manufacture, he shall not be required to sample and analyze the finished product.
7.1.1 When a detailed chemical analysis is required with a shipment, is shall be called for in the contract or purchase order.
7.1.2 If the producer’sproducer’s or supplier’ssupplier’s method of composition control is acceptable, sampling for chemical
analysis may be waived at the discretion of the purchaser.
7.2 Number of Samples—When required, samples for determination of chemical composition shall be taken to represent the
following:
7.2.1 A sample shall be taken from each of two representative castings selected from each lot defined in 6.2.
7.3 Methods of Sampling—Samples from die castings for determination of chemical composition shall be taken in accordance
with Specification B949, Section 6.5 and 6.6.
7.4 Method of Analysis—The determination of chemical composition shall be made in accordance with Specification B949,
Section 5.2
...
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