ASTM B199-99(2005)
(Specification)Standard Specification for Magnesium-Alloy Permanent Mold Castings
Standard Specification for Magnesium-Alloy Permanent Mold Castings
SCOPE
1.1 This specification covers magnesium alloy permanent mold casting alloys designated as shown in .
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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Designation: B 199 – 99 (Reapproved 2005)
Standard Specification for
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Magnesium-Alloy Permanent Mold Castings
This standard is issued under the fixed designation B 199; 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 (e) 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 E88 Practice for Sampling Nonferrous Metals and Alloys
in Cast Form for Determination of Chemical Composition
1.1 This specification covers magnesium alloy permanent
E94 Guide for Radiographic Examination
mold casting alloys designated as shown in Table 1.
E 155 Reference Radiographs for Inspection of Aluminum
1.2 The values stated in inch-pound units are to be regarded
and Magnesium Castings
as the standard. The SI values given in parentheses are
E 165 Test Methods for Liquid Penetrant Examination
provided for information only.
E 527 Practice for Numbering Metals and Alloys (UNS)
1.3 This standard does not purport to address all of the
2.3 Federal Standards:
safety concerns, if any, associated with its use. It is the
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Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
responsibility of the user of this standard to establish appro-
2.4 Military Specification:
priate safety and health practices and determine the applica-
MIL-M-6857 Heat Treatment of Magnesium Alloy Cast-
bility of regulatory limitations prior to use.
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ings
2. Referenced Documents
3. Terminology
2.1 The following documents of the issue in effect on date
3.1 Definitions:
of order acceptance form a part of this specification to the
3.1.1 permanent mold casting—a metal object produced by
extent referenced herein:
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introducing molten metal by gravity or low pressure into a
2.2 ASTM Standards:
mold constructed of durable material, usually iron or steel, and
B 275 Practice for Codification of Certain Nonferrous Met-
allowing it to solidify.
als and Alloys, Cast and Wrought
3.1.2 semipermanent mold casting—apermanentmoldcast-
B 296 Practice for Temper Designations of Magnesium
ing which is made using an expendable core such as bonded
Alloys, Cast and Wrought
sand.
B 557 Test Methods of Tension Testing Wrought and Cast
Aluminum- and Magnesium-Alloy Products
4. Ordering Information
B 660 Practices for Packaging/Packing of Aluminum and
4.1 Orders for castings under this specification shall include
Magnesium Products
the following information:
B 661 Practice for Heat Treatment of Magnesium Alloys
4.1.1 Quantity of each casting,
E8 Test Methods of Tension Testing of Metallic Materials
4.1.2 Alloy (Section 7 and Table 1),
E29 Practice for Using Significant Digits in Test Data to
4.1.3 Temper (Section 8 and Table 2),
Determine Conformance with Specification
4.1.4 Minimum properties of specimens cut from castings,
E35 Test Methods for Chemical Analysis of Magnesium
if required (see section 9.3),
and Magnesium Alloys
4.1.5 Drawing showing dimensions of the castings (the
amount of stock left for machine finish should be indicated),
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4.1.6 Surface treatment (see 10.1),
This specification is under the jurisdiction of ASTM Committee B07 on Light
Metals and Alloys and is the direct responsibility of Subcommittee B07.04 on
4.1.7 Whether inspection is required at the manufacturer’s
Magnesium Alloy Cast and Wrought Products.
works (see section 11.1.1),
Current edition approved Feb. 1, 2005. Published February 2005. Originally
4.1.8 Special inspection requirements (see 11.2),
approved in 1945. Last previous edition approved in 1999 as B 199 – 99.
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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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the ASTM website. Robbins Ave., Philadelphia, PA 19111-5098.
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B 199 – 99 (2005)
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 to the nearest unit in the last right-hand place
...
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