Standard Specification for Magnesium-Alloy Permanent Mold Castings

ABSTRACT
This specification covers magnesium alloy permanent mold casting. The castings may be subjected to the heat treatment necessary to produce material that will conform to the requirements specified. Heat treatment shall be performed on the whole of a casting, never on a part only, and shall be applied in a manner that will produce the utmost uniformity. The castings shall be of uniform quality and condition, free of cracks or other injurious defects, and shall be well cleaned by sand blasting or any other approved process before inspection. The material shall conform to the chemical composition limits prescribed. Any suitable method of chemical analysis may be used. Unless otherwise specified, heat treatment for the applicable tempers designated shall be in accordance with practice B 661 or with Military Specification MIL-M-6857. The tension test specimens representing the castings shall conform to the requirements specified. At least one tension test specimen shall be cast from each melt of 2000 lb (907 kg) or fraction thereof to represent the castings poured from the same melt. The tension tests shall be made in accordance with test methods B 557.
SCOPE
1.1 This specification covers magnesium alloy permanent mold casting alloys designated as shown in Table 1.
1.2 The values stated in inch-pound units are to be regarded as the standard. The SI values given in parentheses are provided for information only.
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 establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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Publication Date
31-May-2007
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ASTM B199-07 - Standard Specification for Magnesium-Alloy Permanent Mold Castings
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:B199 −07
StandardSpecification for
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Magnesium-Alloy Permanent Mold Castings
This standard is issued under the fixed designation B199; 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.
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1. Scope Magnesium Alloys (Withdrawn 2008)
E88 Practice for Sampling Nonferrous Metals andAlloys in
1.1 This specification covers magnesium alloy permanent
Cast Form for Determination of Chemical Composition
mold casting alloys designated as shown in Table 1.
E94 Guide for Radiographic Examination
1.2 The values stated in inch-pound units are to be regarded E155 Reference Radiographs for Inspection of Aluminum
as the standard. The SI values given in parentheses are and Magnesium Castings
provided for information only. E165 Practice for Liquid Penetrant Examination for General
Industry
1.3 This standard does not purport to address all of the
E527 Practice for Numbering Metals and Alloys in the
safety concerns, if any, associated with its use. It is the
Unified Numbering System (UNS)
responsibility of the user of this standard to establish appro-
2.3 Federal Standards:
priate safety and health practices and determine the applica-
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Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
bility of regulatory limitations prior to use.
2.4 Military Specification:
MIL-M-6857 Heat Treatment of Magnesium Alloy Cast-
2. Referenced Documents
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ings
2.1 The following documents of the issue in effect on date
3. Terminology
of order acceptance form a part of this specification to the
extent referenced herein: 3.1 Definitions:
3.1.1 permanent mold casting—a metal object produced by
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2.2 ASTM Standards:
introducing molten metal by gravity or low pressure into a
B296 Practice for Temper Designations of Magnesium
mold constructed of durable material, usually iron or steel, and
Alloys, Cast and Wrought
allowing it to solidify.
B557 Test Methods for Tension Testing Wrought and Cast
3.1.2 semipermanent mold casting—a permanent mold cast-
Aluminum- and Magnesium-Alloy Products
ing which is made using an expendable core such as bonded
B660 Practices for Packaging/Packing of Aluminum and
sand.
Magnesium Products
B661 Practice for Heat Treatment of Magnesium Alloys
4. Ordering Information
B951 PracticeforCodificationofUnalloyedMagnesiumand
4.1 Orders for castings under this specification shall include
Magnesium-Alloys, Cast and Wrought
the following information:
E8 Test Methods for Tension Testing of Metallic Materials
4.1.1 Quantity of each casting,
E29 Practice for Using Significant Digits in Test Data to
4.1.2 Alloy (Section 7 and Table 1),
Determine Conformance with Specifications
4.1.3 Temper (Section 8 and Table 2),
E35 Test Methods for ChemicalAnalysis of Magnesium and
4.1.4 Minimum properties of specimens cut from castings,
if required (see section 9.3),
4.1.5 Drawing showing dimensions of the castings (the
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This specification is under the jurisdiction of ASTM Committee B07 on Light
amount of stock left for machine finish should be indicated),
Metals and Alloys and is the direct responsibility of Subcommittee B07.04 on
4.1.6 Surface treatment (see 10.1),
Magnesium Alloy Cast and Wrought Products.
Current edition approved June 1, 2007. Published June 2007. Originally
approved in 1945. Last previous edition approved in 2005 as B199 – 99 (2005).
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DOI: 10.1520/B0199-07. The last approved version of this historical standard is referenced on
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or www.astm.org.
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contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
Standards volume information, refer to the standard’s Document Summary page on Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
the ASTM website. www.dodssp.daps.mil.
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B199−07
A
TABLE 1 Chemical Composition Limits
NOTE 1—Analysis shall regularly be made only for the elements specifically mentioned in this table. If, however, the presence of other elements is
suspectedorindicatedinamountsgreaterthanthespecifiedlimits,furtheranalysisshallbemadetodeterminethattheseelementsarenotpresentinexcess
of the specified limits.
NOTE 2—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 shall be rounded t
...

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