ASTM B86-08
(Specification)Standard Specification for Zinc and Zinc-Aluminum (ZA) Alloy Foundry and Die Castings
Standard Specification for Zinc and Zinc-Aluminum (ZA) Alloy Foundry and Die Castings
ABSTRACT
This specification covers commercial zinc, zinc-aluminum castings and continuous cast bar stock. Seven alloy compositions are specified and designated: Alloy 3; Alloy 7; Alloy 5; Alloy 2; ZA-8; ZA-12; ZA-27. The metal used in the manufacture of die castings shall be zinc alloy of a specified chemical composition conforming to the requirements specified. Impact test and tension test shall be made to conform to the specified requirements.
SCOPE
1.1 This specification covers commercial zinc, zinc-aluminum castings and continuous cast bar stock, as designated and specified in Table 1. Seven alloy compositions are specified and designated as follows:
CommonTraditional ASTM AUNS Alloy 3Zamak 3AG 40A BZ33520 Alloy 7Zamak 7AG 40BZ33523 Alloy 5Zamak 5AC 41A BZ35531 Alloy 2Zamak 2AC 43AZ35541 ZA-8ZA-8...Z35636 ZA-12 ZA-12...Z35631 ZA-27 ZA-27...Z35841 _________
A See Table 1, Footnote C.
B SAE Specification, Nos. 903 and 925 conform to the requirements for alloys AG40A and AC41A, respectively.
1.2 Zinc Alloys Z33520, Z33523, Z35531, and Z35541 are used primarily in the manufacture of pressure die castings. Zinc-Aluminum Alloys Z35636, Z35631, and Z35841 are used in the manufacture of both foundry and pressure die castings. These alloys are also fabricated into continuous cast bar stock used for prototyping and screw machine stock.
1.3 The values stated in inch-pound units are to be regarded as standard.
1.4 Systems of nomenclature used to designate zinc and zinc-aluminum (ZA) alloys used for casting are described in Appendix X1.
1.5 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.
TABLE 1 Chemical Requirements ElementAlloy 3A,B,C,D
Zamak 3
(AG40A)
Z33520Alloy 7A ,B,C,D
Zamak 7
(AG40B)
Z33523Alloy 5A,B,C,D
Zamak 5
(AC41A)
Z35531Alloy 2A,C,,D
Zamak
(AC43A)
Z355412ZA-8A,C,E
ZA-8
Z35636ZA-12A,C ,E
ZA-12
Z35631ZA-2A,C,E
ZA-27
Z35841 Aluminum3.5-4.33.5-4.33.5-4.3 3.5-4.38.0-8.810.5-11.525.0-28.0 Magnesium0.020-0.05F 0.005-0.0200.03-0.08F0.020-0.050 0.015-0.0300.015-0.0300.010-0.020 Copper 0.25 maxG0.25 max0.75-1.252.5-3.00.8-1.30.5-1.2 2.0-2.5 Iron, max0.1000.0750.1000.1000.0750.0750.075 Lead, max0.0050.0030.005 0.0050.0060.0060.006 Cadmium, max0.0040.00200.004 0.0040.0060.0060.006 Tin, max0.0030.00100.003 0.0030.0030.0030.003 Nickel . . .0.005-0.020. . .. . .. . .. . .. . . ZincHremainder remainderremainderremainder remainderremainderremainder
A For purposes of acceptance and rejection, the observed value or calculated value obtained from analysis should 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 procedure prescribed in Practice E 29.
B Zinc alloy castings may contain nickel, chromium, silicon, and manganese in amounts of 0.02, 0.02, 0.035, and 0.06 % respectively. No harmful effects have ever been noted due to the presence of these elements in these concentrations and, therefore, analyses are not required for these elements, with the exception of nickel analysis for Z33522.
C ASTM alloy designations were established in accordance with Practice B 275. The UNS designations were established in accordance with Practice E 527. The last digit of a UNS number differentiates between alloys of similar composition. The UNS designations for ingot and casting versions of an alloy were not assigned in the same sequence for all alloys.
D When this material is required to conform to ISO 301, the chemical limits for thallium and indium each sh...
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Designation: B 86 – 08
Standard Specification for
Zinc and Zinc-Aluminum (ZA) Alloy Foundry and Die
1
Castings
ThisstandardisissuedunderthefixeddesignationB 86;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
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* 2. Referenced Documents
1.1 This specification covers commercial zinc, zinc- 2.1 The following documents of the issue in effect on date
aluminumcastingsandcontinuouscastbarstock,asdesignated of order acceptance form a part of this specification to the
and specified in Table 1. Seven alloy compositions are speci- extent referenced herein:
2
fied and designated as follows: 2.2 ASTM Standards:
A
B 240 Specification for Zinc and Zinc-Aluminum (ZA)
Common Traditional ASTM UNS
Alloys in Ingot Form for Foundry and Die Castings
B
Alloy 3 Zamak 3 AG 40A Z33520
B 275 Practice for Codification of Certain Nonferrous Met-
Alloy 7 Zamak 7 AG 40B Z33523
B
als and Alloys, Cast and Wrought
Alloy 5 Zamak 5 AC 41A Z35531
Alloy 2 Zamak 2 AC 43A Z35541
B 557 Test Methods for Tension Testing Wrought and Cast
ZA-8 ZA-8 . Z35636
Aluminum- and Magnesium-Alloy Products
ZA-12 ZA-12 . Z35631
B 899 Terminology Relating to Non-ferrous Metals and
ZA-27 ZA-27 . Z35841
_________
Alloys
A
See Table 1, Footnote C. E8 Test Methods for Tension Testing of Metallic Materials
B
SAE Specification, Nos. 903 and 925 conform to the requirements for alloys
E23 Test Methods for Notched Bar Impact Testing of
AG40A and AC41A, respectively.
Metallic Materials
E29 Practice for Using Significant Digits in Test Data to
1.2 Zinc Alloys Z33520, Z33523, Z35531, and Z35541 are
Determine Conformance with Specifications
used primarily in the manufacture of pressure die castings.
E47 Test Methods for Chemical Analysis of Zinc Die-
Zinc-AluminumAlloys Z35636, Z35631, and Z35841 are used
3
Casting Alloys
in the manufacture of both foundry and pressure die castings.
E88 Practice for Sampling Nonferrous Metals and Alloys
These alloys are also fabricated into continuous cast bar stock
in Cast Form for Determination of Chemical Composition
used for prototyping and screw machine stock.
E 527 Practice for Numbering Metals and Alloys in the
1.3 The values stated in inch-pound units are to be regarded
Unified Numbering System (UNS)
as standard.
E 536 TestMethodsforChemicalAnalysisofZincandZinc
1.4 Systems of nomenclature used to designate zinc and
Alloys
zinc-aluminum (ZA) alloys used for casting are described in
E 634 Practice for Sampling of Zinc and Zinc Alloys for
Appendix X1.
Optical Emission Spectrometric Analysis
1.5 This standard does not purport to address all of the
4
2.3 North American Die Casting Association (NADCA):
safety concerns, if any, associated with its use. It is the
NADCA Product Specification Standards for Die Castings
responsibility of the user of this standard to become familiar
5
2.4 Federal Standard:
with all hazards including those identified in the appropriate
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
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
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
regulatory limitations prior to use.
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.
3
Withdrawn.
1 4
This specification is under the jurisdiction of ASTM Committee B02 on Available from North American Die Casting, Assn., 2000 5th Ave., River
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee Grove, IL 60171.
5
B02.04 on Zinc and Cadmium. Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
Current edition approved Nov. 1, 2008. Published December 2008. Originally Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
approved in 1931. Last previous edition approved in 2006 as B 86 - 06. www.dodssp.daps.mil.
*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 ----------------------
B86–08
TABLE 1 Chemical Requirements
A,B,C,D A,B,C,D A,B,C,D A,C,,D A,C,E A,C,E A,C,E
Alloy 3 Alloy 7 Alloy 5 Alloy 2 ZA-8 ZA-12 ZA-2
Zamak 3 Zamak 7 Zamak 5 Zamak ZA-8 ZA-12 ZA-27
Element
(AG40A) (AG40B) (AC41A) (AC43A)
Z33520 Z33523 Z35531 Z355412 Z35636 Z35631 Z35841
Aluminum 3.5-4
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:B86–06 Designation: B 86 – 08
Standard Specification for
Zinc and Zinc-Aluminum (ZA) Alloy Foundry and Die
1
Castings
ThisstandardisissuedunderthefixeddesignationB 86;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
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 commercial zinc, zinc-aluminum castings and continuous cast bar stock, as designated and
specified in Table 1. Seven alloy compositions are specified and designated as follows:
A
Common Traditional ASTM UNS
B
Alloy 3 Zamak 3 AG 40A Z33520
Alloy 7 Zamak 7 AG 40B Z33523
B
Alloy 5 Zamak 5 AC 41A Z35531
Alloy 2 Zamak 2 AC 43A Z35541
ZA-8 ZA-8 . Z35636
ZA-12 ZA-12 . Z35631
ZA-27 ZA-27 . Z35841
_________
A
See Table 1, Footnote C.
B
SAE Specification, Nos. 903 and 925 conform to the requirements for alloys AG40A and AC41A, respectively.
1.2 Zinc Alloys Z33520, Z33523, Z35531, and Z35541 are used primarily in the manufacture of pressure die castings.
Zinc-AluminumAlloysZ35636,Z35631,andZ35841areusedinthemanufactureofbothfoundryandpressurediecastings.These
alloys are also fabricated into continuous cast bar stock used for prototyping and screw machine stock.
1.3 The values stated in inch-pound units are to be regarded as the standard.
1.4 Systems of nomenclature used to designate zinc and zinc-aluminum (ZA) alloys used for casting are described inAppendix
X1.
1.5 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 acceptance form a part of this specification to the extent
referenced herein:
2
2.2 ASTM Standards:
B 240 Specification for Zinc and Zinc-Aluminum (ZA) Alloys in Ingot Form for Foundry and Die Castings
B 275 Practice for Codification of Certain Nonferrous Metals and Alloys, Cast and Wrought
B 557 Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products
B 899 Terminology Relating to Non-ferrous Metals and Alloys
E 8 Test Methods for Tension Testing of Metallic Materials
E 23 Test Methods for Notched Bar Impact Testing of Metallic Materials
E 29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
1
This specification is under the jurisdiction ofASTM Committee B02 on Nonferrous Metals andAlloys and is the direct responsibility of Subcommittee B02.04 on Zinc
and Cadmium.
Current edition approved Aug.Nov. 1, 2006.2008. Published August 2006.December 2008. Originally approved in 1931. Last previous edition approved in 20052006 as
B 86 - 056.
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 ----------------------
B86–08
TABLE 1 Chemical Requirements
A,B,C,D A,B,C,D A,B,C,D A,C,,D A,C,E A,C,E A,C,E
Alloy 3 Alloy 7 Alloy 5 Alloy 2 ZA-8 ZA-12 ZA-2
Zamak 3 Zamak 7 Zamak 5 Zamak ZA-8 ZA-12 ZA-27
Element
(AG40A) (AG40B) (AC41A) (AC43A)
Z33520 Z33523 Z35531 Z355412 Z35636 Z35631 Z35841
Aluminum 3.5-4.3 3.5-4.3 3.5-4.3 3.5-4.3 8.0-8.8 10.5-11.5 25.0-28.0
F F
Magnesium 0.020-0.05 0.005-0.020 0.03-0.08 0.020-0.050 0.015-0.030 0.015-0.030 0.010-0.020
G
Copper 0.25 max 0.25 max 0.75-1.25 2.5-3.0 0.8-1.3 0.5-1.2 2.0-2.5
Iron, max 0.100 0.075 0.100 0.100 0.075 0.075 0.075
Lead, max 0.005 0.003 0.005 0.005 0.006 0.006 0.006
Cadmium, max 0.004 0.0020 0.004 0.004 0.006 0.006 0.006
Tin, max 0.003 0.0010 0.003 0.003 0.003 0.003 0.003
Nickel . . . 0.005-0.020 . . . . . . . . . . . . . . .
H
Zinc remainder remainder remainder remainder remainder remainder rema
...
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