ASTM B86-05

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Designation: B 86 – 05
Standard Specification for
Zinc and Zinc-Aluminum (ZA) Alloy Foundry and Die
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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 (e) indicates an editorial change since the last revision or reapproval.
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:
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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 of 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
1.2 Zinc Alloys Z33520, Z33523, Z35531, and Z35541 are
E29 Practice for Using Significant Digits in Test Data to
used primarily in the manufacture of pressure die castings. Determine Conformance with Specifications
Zinc-AluminumAlloys Z35636, Z35631, and Z35841 are used
E47 Test Methods for Chemical Analysis of Zinc Die-
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in the manufacture of both foundry and pressure die castings. Casting Alloys
These alloys are also fabricated into continuous cast bar stock E88 Practice for Sampling Nonferrous Metals and Alloys
used for prototyping and screw machine stock. in Cast Form for Determination of Chemical Composition
1.3 The values stated in inch-pound units are to be regarded E 527 Practice for Numbering Metals and Alloys (UNS)
as the 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
2.3 North American Die Casting Association (NADCA):
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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
2.4 Federal Standard:
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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
2.5 Military Standard:
as provided by the manufacturer, to establish appropriate
safety and health practices, and determine the applicability of
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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.
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This specification is under the jurisdiction of ASTM Committee B02 on Withdrawn.
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Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee Available from North American Die Casting, Assn., 2000 5th Ave., River
B02.04 on Zinc and Cadmium.
Grove, IL 60171.
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Current edition approved Nov. 1, 2005. Published December 2005. Originally Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
e2
approved in 1931. Last previous edition approved in 2004 as B 86 - 04 . Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098.
*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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B86–05
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 0.020-0.05
...