ASTM B403-12
(Specification)Standard Specification for Magnesium-Alloy Investment Castings
Standard Specification for Magnesium-Alloy Investment Castings
ABSTRACT
This specification covers magnesium-alloy investment castings designated as AM100A, AZ81A, AZ91C, AZ91E, AZ92A, EQ21A, EZ33A, K1A, QE22A, ZE41A, and ZK61A. Sufficient stock shall be allowed for shrinkage and, where required, for finishing; but castings of excessive weight shall not be furnished. The castings shall conform to the chemical composition requirements prescribed for magnesium, aluminum, manganese, zinc, zirconium, rare earth elements, copper, nickel, silicon, iron, and other impurities, as determined by chemical analysis, and shall meet the specified requirements for the tensile properties such as tensile strength, yield strength, and elongation. Requirements for heat treatment and tensile test are detailed. The castings shall be of uniform quality and condition, free from cracks and other injurious defects, shall be cleaned before inspection by blasting or other approved process, and shall not be repaired by welding, impregnation, peening, or other method unless it is required.
SCOPE
1.1 This specification covers magnesium-alloy investment castings designated as shown in Table 1. TABLE 1 Chemical Composition LimitsANote 1—Analysis shall regularly be made 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 applied to all specified limits in this table: For purposes of acceptance and rejection, an observed value or a calculated value obtained from analysis should be rounded off to the nearest unit in the last right-hand place of figures used in expressing the specified limit.
Alloy Number B
Composition, percent
Others
Each
ASTM
UNS
Iron
Magne-
sium
Alu-
minum
Manga-
nese
Zinc
Zirconium
Rare Earths
Thorium
Copper
Nickel
Silicon
TotalC
Other
Impurities
AM100A
M10100
...
remainder
9.3–10.7
0.10–0.35
0.30
...
...
...
0.10
0.01
0.30
0.30
...
AZ81A
M11810
...
remainder
7.0–8.1
0.13–0.35
0.40–1.0
...
...
...
0.10
0.01
0.30
0.30
...
AZ91C
M11914
...
remainder
8.1–9.3
0.13–0.35
0.40–1.0
...
...
...
0.10
0.01
0.30
0.30
...
AZ91E
M11919
0.005D E
remainder
8.1–9.3
0.17–0.35
0.40–1.0
...
...
...
0.015
0.0010
0.20
0.30
0.01
AZ92A
M11920
...
remainder
8.3–9.7
0–0.35
1.6–2.4
...
...
...
0.10
0.01
0.30
0.30
...
EQ21A
M18330
...
remainder
...
...
...
0.40–1.0
1.5–3.0F
...
0.05–0.10
0.01
...
0.30
...
EZ33A
M12330
...
remainder
...
...
2.0–3.1
0.50–1.0
2.5–4.0
...
0.10
0.01
...
0.30
...
K1A
M18010
...
remainder
...
...
...
0.40–1.0
...
...
...
...
...
0.30
...
QE22AG
M18220G
...
remainder
...
...
...
0.40–1.0
1.8–2.5F
...
0.10
0.01
...
0.30
...
ZE41A
M16410
...
remainder
...
0.15
3.5–5.0
0.40–1.0
0.75–1.75
...
0.10
0.01
...
0.30
...
ZK61A
M16610
...
remainder
...
...
5.5–6.5
0.6–1.0
...
...
0.10
0.01
...
0.30
... A Limits are in weight percent maximum unless shown as a range or stated otherwise.B These alloy designations were established in accordance with Practice B951.C Includes listed elements for which no specific limit is shown.D If iron content exceeds 0.005 %, the iro...
General Information
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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:B403 −12
Standard Specification for
1
Magnesium-Alloy Investment Castings
This standard is issued under the fixed designation B403; 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 investment
E88 Practice for Sampling Nonferrous Metals and Alloys in
castings designated as shown in Table 1.
Cast Form for Determination of Chemical Composition
1.2 Alloy designations are in accordance with Practice
E94 Guide for Radiographic Examination
E527; temper designations are in accordance with Practice
E155 Reference Radiographs for Inspection of Aluminum
B296.
and Magnesium Castings
E165 Practice for Liquid Penetrant Examination for General
1.3 The values stated in inch-pound units are to be regarded
as the standard. The SI values in parentheses are for informa- Industry
E527 Practice for Numbering Metals and Alloys in the
tion only.
Unified Numbering System (UNS)
2.3 Federal Standards:
2. Referenced Documents
3
Fed. Std. No. 123 Marking for Shipping (Civil Agencies)
2.1 The following documents of the issue in effect on the
2.4 Military Standards:
date of order acceptance form a part of this specification to the
MIL-STD-129 Marking for Shipment and Storage (Military
extent referenced herein:
3
Agencies)
2
2.2 ASTM Standards:
B296 Practice for Temper Designations of Magnesium 3. Ordering Information
Alloys, Cast and Wrought
3.1 Orders for castings under this specification shall include
B557 Test Methods for Tension Testing Wrought and Cast
the following information:
Aluminum- and Magnesium-Alloy Products
3.1.1 Quantity of each casting,
B660 Practices for Packaging/Packing of Aluminum and
3.1.2 Alloy (Section 6 and Table 1),
Magnesium Products
3.1.3 Temper (see 5.1 and Table 2),
B661 Practice for Heat Treatment of Magnesium Alloys
3.1.4 Casting drawing giving all necessary dimensions and
B666/B666M Practice for Identification Marking of Alumi-
showing amount of finish left for machining,
num and Magnesium Products
3.1.5 Surface treatment (see 10.1),
B951 PracticeforCodificationofUnalloyedMagnesiumand
3.1.6 Whether certification is required (see 11.1),
Magnesium-Alloys, Cast and Wrought
3.1.7 Whether inspection is required at the manufacturer’s
B953 Practice for Sampling Magnesium and Magnesium
works (see 12.1), and
Alloys for Spectrochemical Analysis
3.1.8 Special inspection requirements (see 12.3).
B954 Test Method for Analysis of Magnesium and Magne-
sium Alloys by Atomic Emission Spectrometry 4. Materials and Manufacture
D3951 Practice for Commercial Packaging
4.1 The responsibility for furnishing castings that can be
laid out and machined to the finished dimensions within the
permissible variations specified, as shown on the drawings,
1
This specification is under the jurisdiction of ASTM Committee B07 on Light
shall rest with the manufacturer, except where mold equipment
Metals and Alloys and is the direct responsibility of Subcommittee B07.04 on
is furnished by the purchaser. Sufficient stock shall be allowed
Magnesium Alloy Cast and Wrought Products.
forshrinkageand,whererequired,forfinishing;butcastingsof
Current edition approved Nov. 1, 2012. Published November 2012. Originally
approved in 1963. Last previous edition approved in 2007 as B403 – 07. DOI: excessive weight shall not be furnished.
10.1520/B0403-12.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
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.
*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 ----------------------
B403−12
A
TABLE 1 Chemical Composition Limits
NOTE1—Analysisshallregularlybemadefortheelementsspecificallymentionedinthistable.If,however,thepresenceofotherelementsissuspected
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 applied to all specified limits in this table: For purposes of accepta
...
Designation: B403 − 07 B403 − 12
Standard Specification for
1
Magnesium-Alloy Investment Castings
This standard is issued under the fixed designation B403; 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*
1.1 This specification covers magnesium-alloy investment castings designated as shown in Table 1.
1.2 Alloy designations are in accordance with Practice E527; temper designations are in accordance with Practice B296.
1.3 The values stated in inch-pound units are to be regarded as the standard. The SI values in parentheses are for information
only.
2. Referenced Documents
2.1 The following documents of the issue in effect on the 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
B666/B666M Practice for Identification Marking of Aluminum and Magnesium Products
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
D3951 Practice for Commercial Packaging
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 Shipping (Civil Agencies)
2.4 Military Standards:
3
MIL-STD-129 Marking for Shipment and Storage (Military Agencies)
3. Ordering Information
3.1 Orders for castings under this specification shall include the following information:
3.1.1 Quantity of each casting,
3.1.2 Alloy (Section 6 and Table 1),
3.1.3 Temper (see 5.1 and Table 2),
3.1.4 Casting drawing giving all necessary dimensions and showing amount of finish left for machining,
3.1.5 Surface treatment (see 10.1),
3.1.6 Whether certification is required (see 11.1),
3.1.7 Whether inspection is required at the manufacturer’s works (see 12.1), and
3.1.8 Special inspection requirements (see 12.3).
*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 ----------------------
B403 − 12
A
TABLE 1 Chemical Composition Limits
NOTE 1—Analysis shall regularly be made 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 applied to all specified limits in this table: For purposes of acceptance and rejection, an observed value or a calculated value
obtained from analysis should be rounded off to the nearest unit in the last right-hand place of figures used in expressing the specified limit.
B
Alloy Number Composition, percent
C Others
Total
Magne- Alu- Manga-
Each
ASTM UNS Iron Zinc Zirconium Rare Thorium Copper Nickel Silicon Other
sium minum nese
Impurities
Earths
AM100A M10100 . remainder 9.3–10.7 0.10–0.35 0.30 . . . 0.10 0.01 0.30 0.30 .
AZ81A M11810 . remainder 7.0–8.1 0.13–0.35 0.40–1.0 . . . 0.10 0.01 0.30 0.30 .
AZ91C M11914 . remainder 8.1–9.3 0.13–0.35 0.40–1.0 . . . 0.10 0.01 0.30 0.30 .
DE
AZ91E M11919 0.005 remainder 8.1–9.3 0.17–0.35 0.40–1.0 . . . 0.015 0.0010 0.20 0.30 0.01
AZ92A M11920 . remainder 8.3–9.7 0–0.35 1.6–2.4 . . . 0.10 0.01 0.30 0.30 .
F
EQ21A M18330 . remainder . . . 0.40–1.0 1.5–3.0 . 0.05–0.10 0.01 . 0.30 .
EZ33A M12330 . remainder . . 2.0–3.1 0.50–1.0 2.5–4.0 . 0.10 0.01 . 0.30 .
K1A M18010 . remainder . . . 0.40–1.0 . . . . . 0.30 .
G G F
QE22A M18220 . remainder . . . 0.40–1.0 1.8–2.5 . 0.10 0.01 . 0.30 .
ZE41A M16410 . remainder . 0.15 3.5–5.0 0.40–1.0 0.75–1.
...
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