ASTM B989-14
(Specification)Standard Specification for High Fluidity (HF) Zinc-Aluminum Alloy in Ingot Form for Thin Wall Die Castings
Standard Specification for High Fluidity (HF) Zinc-Aluminum Alloy in Ingot Form for Thin Wall Die Castings
ABSTRACT
This specification covers the chemical requirements for commercial high fluidity zinc-aluminum alloys in ingot form for remelting for the manufacture of thin wall pressure die castings. A table designates and specifies the requirements for aluminum, magnesium, copper, iron, lead, cadmium, tin, and zinc. The ingots shall conform to the requirements as to chemical composition as prescribed in this table. The specification also covers methods for the determination of chemical composition; dimensions, mass, and permissible variation; and shapes and sizes.
SCOPE
1.1 This specification covers a commercial zinc-aluminum alloy in ingot form for remelting for the manufacture of thin wall pressure die castings as designated and specified in Table 1.
1.2 Systems of nomenclature used to designate zinc and zinc-aluminum (ZA) alloys used for casting are described in Appendix X1.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 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:B989 −14
Standard Specification for
High Fluidity (HF) Zinc-Aluminum Alloy in Ingot Form for
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Thin Wall Die Castings
This standard is issued under the fixed designation B989; 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 B949 Specification for General Requirements for Zinc and
Zinc Alloy Products
1.1 This specification covers a commercial zinc-aluminum
E29 Practice for Using Significant Digits in Test Data to
alloy in ingot form for remelting for the manufacture of thin
Determine Conformance with Specifications
wall pressure die castings as designated and specified in Table
E527 Practice for Numbering Metals and Alloys in the
1.
Unified Numbering System (UNS)
1.2 Systems of nomenclature used to designate zinc and
E536 Test Methods for Chemical Analysis of Zinc and Zinc
zinc-aluminum (ZA) alloys used for casting are described in
Alloys
Appendix X1.
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2.3 ISO Standards:
1.3 The values stated in inch-pound units are to be regarded
ISO 3815–1 Zinc and zinc alloys — Part 1:Analysis of solid
as standard. The values given in parentheses are mathematical
samples by optical emission spectrometry
conversions to SI units that are provided for information only
ISO 3815–2 Zinc and zinc alloys — Part 2: Analysis by
and are not considered standard.
inductively coupled plasma optical emission spectrometry
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to become familiar
3.1 Terms shall be defined in accordance with Terminology
with all hazards including those identified in the appropriate
B899.
Material Safety Data Sheet (MSDS) for this product/material
3.2 Definitions of Terms Specific to This Standard:
as provided by the manufacturer, to establish appropriate
safety and health practices, and determine the applicability of 3.2.1 die casting, n—a casting process in which molten
regulatory limitations prior to use.
metal is injected under high velocity and pressure into a metal
die and solidified, also a product produced by such a process;
2. Referenced Documents
alternately known as pressure die casting.
2.1 The following documents of the issue in effect on date
3.2.2 high fluidity alloy, n—a zinc alloy by nature of its
of order acceptance form a part of this specification to the
composition is capable of producing die castings with thinner
extent referenced herein:
wall sections compared to typical die cast alloys; often less
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than 0.012 in. (0.30 mm) in thickness.
2.2 ASTM Standards:
B897 Specification for Configuration of Zinc and ZincAlloy
3.2.3 thin wall die casting, n—a die casting with wall
Jumbo, Block, Half Block, and Slab Ingot
sections that can be less than 0.012 in. (0.30 mm) in thickness.
B899 Terminology Relating to Non-ferrous Metals and Al-
loys
4. Ordering Information (See Specification B949)
B908 Practice for the Use of Color Codes for Zinc Casting
Alloy Ingot
5. Chemical Requirements
5.1 The ingots shall conform to the requirements as to
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This specification is under the jurisdiction of ASTM Committee B02 on
chemical composition as prescribed in Table 1. Conformance
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
shall be determined in accordance with Specification B949,
B02.04 on Zinc and Cadmium.
Sections 5.2 and 5.2.1.
Current edition approved June 1, 2014. Published June 2014. DOI: 10.1520/
B0989-14.
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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
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B989−14
TABLE 1 Chemical and North American Color Code
7.3 For purposes of determining compliance with specified
Requirements
composition limits as given in Table 1, an observed or
A,B,C
Common Name HF Alloy
calculated value shall be rounded to the nearest unit in the last
UNS to be assigned
right-hand place of figures shown in Table 1, in accordance
D
Color Code Red/Brown
with the rounding method of Practice E29.
Element
Aluminum 4.3–4.7
8. Materials and Manufacturer (See Specification B949)
Magnesium 0.005–0.012
Copper, max 0.035
9. Physical Properties – NA
Iron, max 0.03
Lead, max 0.003
Cadm
...
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