ASTM B199-12
(Specification)Standard Specification for Magnesium-Alloy Permanent Mold Castings
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.TABLE 1 Chemical Composition LimitsANote 1—Analysis shall regularly be made only for the elements specifically mentioned in this table. If, however, the presence of other elements is suspected or indicated in amounts greater than the specified limits, further analysis shall be made to determine that these elements are not present in excess 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 of figures used in expressing the specified limit.
Alloy NumberB
Composition, %
ASTM
UNS
Iron
Magnesium
Aluminum
Manganese
Zinc
Rare Earths
Zirconium
Silicon
Copper
Nickel
TotalC
Other
Impuri-
ties
Others
Each
AM100A
M10100
...
remainder
9.3 to 10.7
0.10–0.35
0.30
...
...
0.30
0.10
0.01
0.30
...
AZ81A
M11810
...
remainder
7.0 to 8.1
0.13–0.35
0.40 to 1.0
...
...
0.30
0.10
0.01
0.30
...
AZ91C
M11914
...
remainder
8.1 to 9.3
0.13–0.35
0.40 to 1.0
...
...
0.30
0.10
0.01
0.30
...
AZ91E
M11919
0.005D
remainder
8.1 to 9.3
0.17–0.35
0.40 to 1.0
...
...
0.20
0.015
0.0010
0.30
0.01
AZ92A
M11920
...
remainder
8.3 to 9.7
0.10–0.35
1.6 to 2.4
...
...
0.30
0.25
0.01
0.30
...
EQ21AE
M18330
...
remainder
...
...
...
1.5 to 3.0F
0.40 to 1.0
...
0.05–0.10
0.01
0.30
...
EZ33A
M12330
...
remainder
...
...
2.0 to 3.1
2.5 to 4.0
0.50 to 1.0
...
0.10
0.01
0.30
...
QE22AG
M18220E
...
remainder
...
...
...
1.8 to 2.5F
0.40 to 1.0
...
0.10
0.01
0.30
... A Limits are in weight percent max unless shown as a range or stated otherwise.B ASTM alloy designations were established in accordance with Practice B951. UNS designations were established in accordance with Practice E527.C Includes listed elements for which no specific limit is shown.D If iron exceeds 0.005 %, the iron to manganese ratio shall not exceed 0.032.E Silver content for Alloy EQ21A (M18330) shall be 1.3 to 1.7 %.F Rare earth elements are in the form of didymium.G Silver content for Alloy QE22A (M18220) shall be 2.0 to 3.0, inclusive.
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 on...
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Designation:B199 −12
Standard Specification for
1
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.
1. Scope* E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
1.1 This specification covers magnesium alloy permanent
E88 Practice for Sampling Nonferrous Metals andAlloys in
mold casting alloys designated as shown in Table 1.
Cast Form for Determination of Chemical Composition
1.2 The values stated in inch-pound units are to be regarded
E94 Guide for Radiographic Examination
as the standard. The SI values given in parentheses are
E155 Reference Radiographs for Inspection of Aluminum
provided for information only.
and Magnesium Castings
E165 Practice for Liquid Penetrant Examination for General
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the Industry
E527 Practice for Numbering Metals and Alloys in the
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- Unified Numbering System (UNS)
bility of regulatory limitations prior to use. 2.3 Federal Standards:
3
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
4
2. Referenced Documents 2.4 Aerospace Materials Specification:
AMS 2768 Heat Treatment of Magnesium Alloy Castings
2.1 The following documents of the issue in effect on date
of order acceptance form a part of this specification to the
3. Terminology
extent referenced herein:
3.1 Definitions:
2
2.2 ASTM Standards:
3.1.1 permanent mold casting—a metal object produced by
B296 Practice for Temper Designations of Magnesium
introducing molten metal by gravity or low pressure into a
Alloys, Cast and Wrought
mold constructed of durable material, usually iron or steel, and
B557 Test Methods for Tension Testing Wrought and Cast
allowing it to solidify.
Aluminum- and Magnesium-Alloy Products
3.1.2 semipermanent mold casting—a permanent mold cast-
B660 Practices for Packaging/Packing of Aluminum and
ing which is made using an expendable core such as bonded
Magnesium Products
sand.
B661 Practice for Heat Treatment of Magnesium Alloys
B951 PracticeforCodificationofUnalloyedMagnesiumand
4. Ordering Information
Magnesium-Alloys, Cast and Wrought
4.1 Orders for castings under this specification shall include
B953 Practice for Sampling Magnesium and Magnesium
the following information:
Alloys for Spectrochemical Analysis
4.1.1 Quantity of each casting,
B954 Test Method for Analysis of Magnesium and Magne-
4.1.2 Alloy (Section 7 and Table 1),
sium Alloys by Atomic Emission Spectrometry
4.1.3 Temper (Section 8 and Table 2),
E8 Test Methods for Tension Testing of Metallic Materials
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
1
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 Nov. 1, 2012. Published November 2012. Originally
approved in 1945. Last previous edition approved in 2007 as B199 – 07. DOI:
3
10.1520/B0199-12. Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.dodssp.daps.mil.
4
Standards volume information, refer to the standard’s Document Summary page on Available from SAE International (SAE), 400 Commonwealth Dr.,Warrendale,
the ASTM website. PA 15096-0001, http://www.sae.org.
*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 ----------------------
B199−12
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.
N
...
Designation: B199 − 07 B199 − 12
Standard Specification for
1
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.
1. Scope 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.
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:
B296 Practice for Temper Designations of Magnesium Alloys, Cast and Wrought
B557 Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products
B660 Practices for Packaging/Packing of Aluminum and Magnesium Products
B661 Practice for Heat Treatment of Magnesium Alloys
B951 Practice for Codification of Unalloyed Magnesium and Magnesium-Alloys, Cast and Wrought
B953 Practice for Sampling Magnesium and Magnesium Alloys for Spectrochemical Analysis
B954 Test Method for Analysis of Magnesium and Magnesium Alloys by Atomic Emission Spectrometry
E8 Test Methods for Tension Testing of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
3
E35 Test Methods for Chemical Analysis of Magnesium and Magnesium Alloys (Withdrawn 2008)
E88 Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical Composition
E94 Guide for Radiographic Examination
E155 Reference Radiographs for Inspection of Aluminum and Magnesium Castings
E165 Practice for Liquid Penetrant Examination for General Industry
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
2.3 Federal Standards:
3
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
4
2.4 Military Aerospace Materials Specification:
MIL-M-6857AMS 2768 Heat Treatment of Magnesium Alloy Castings
3. Terminology
3.1 Definitions:
3.1.1 permanent mold casting—a metal object produced by introducing molten metal by gravity or low pressure into a mold
constructed of durable material, usually iron or steel, and allowing it to solidify.
3.1.2 semipermanent mold casting—a permanent mold casting which is made using an expendable core such as bonded sand.
4. Ordering Information
4.1 Orders for castings under this specification shall include the following information:
4.1.1 Quantity of each casting,
4.1.2 Alloy (Section 7 and Table 1),
*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 ----------------------
B199 − 12
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
suspected or indicated in amounts greater than the specified limits, further analysis shall be made to determine that these elements are not present in excess
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 of figures used in expressing the specified limit.
B
Alloy Number Composition, %
C
Total
Manga- Other Others
ASTM UNS Iron Magnesium Aluminum Zinc Rare Earths Zirconium Silicon Copper Nickel
Impuri-
nese Each
ties
AM100A M10100 . remainder 9.3 to 10.7 0.10–0.35 0.30 . . 0.30 0.10 0.01 0.30 .
AZ81A M11810 . remainder 7.0 to 8.1 0.13–0.35 0.40 to 1.0 . . 0.30 0.10 0.01 0.30 .
AZ91C M11914 . remainder 8.1 to 9.3 0.13–0.35 0.40 to 1.0 . . 0.30 0.10 0.01 0.30 .
D
AZ91E M11919 0.005 remainder 8.1 to 9.3 0.17–0.35 0.40 to 1.0 . . 0.20 0.015 0.0010 0.30 0.01
AZ92A M11920 . remainder 8.3 to 9.7 0.10–0.35 1.6 to 2.4 . . 0.30 0.25 0.01 0.30 .
E F
EQ21A M18330 . remainder . . . 1.5 to 3.0 0.40 to 1.0 . 0.05–0.10 0.01 0.30 .
EZ33A M12330 . remainder . . 2.0 to 3.1 2.5 to 4.0 0.50 to 1.0 . 0.10 0.01 0.30 .
G E F
QE22A M18220 . remainder . . . 1.8 to 2.5 0.40 to 1.0 .
...
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