ASTM B403-02

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Designation: B 403 – 02
Standard Specification for
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Magnesium-Alloy Investment Castings
This standard is issued under the fixed designation B 403; 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.
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1. Scope * E 94 Guide for Radiographic Testing
E 155 Reference Radiographs for Inspection of Aluminum
1.1 This specification covers magnesium-alloy investment
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and Magnesium Castings
castings designated as shown in Table 1.
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E 165 Practice for Liquid Penetrant Examination
1.2 Alloy designations are in accordance with Practices
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E 527 Practice for Numbering Metals and Alloys (UNS)
B 275 and E 527; temper designations are in accordance with
2.3 Federal Standards:
Practice B 296.
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Fed. Std. No. 123 Marking for Shipping (Civil Agencies)
1.3 The values stated in inch-pound units are to be regarded
2.4 Military Standards:
as the standard. The SI values in parentheses are for informa-
MIL-STD-129 Marking for Shipment and Storage (Military
tion only.
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Agencies)
2. Referenced Documents
3. Ordering Information
2.1 The following documents of the issue in effect on the
3.1 Orders for castings under this specification shall include
date of order acceptance form a part of this specification to the
the following information:
extent referenced herein:
3.1.1 Quantity of each casting,
2.2 ASTM Standards:
3.1.2 Alloy (Section 6 and Table 1),
B 275 Practice for Codification of Certain Nonferrous Met-
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3.1.3 Temper (see 5.1 and Table 2),
als and Alloys, Cast and Wrought
3.1.4 Casting drawing giving all necessary dimensions and
B 296 Practice for Temper Designations of Magnesium
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showing amount of finish left for machining,
Alloys, Cast and Wrought
3.1.5 Surface treatment (see 10.1),
B 557 Test Methods of Tension Testing Wrought and Cast
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3.1.6 Whether certification is required (see 11.1),
Aluminum- and Magnesium-Alloy Products
3.1.7 Whether inspection is required at the manufacturer’s
B 660 Practices for Packaging/Packing of Aluminum and
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works (see 12.1), and
Magnesium Products
2 3.1.8 Special inspection requirements (see 12.3).
B 661 Practice for Heat Treatment of Magnesium Alloys
B 666/B 666M Practice for Identification Marking of Alu-
4. Materials and Manufacture
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minum and Magnesium Products
3 4.1 The responsibility for furnishing castings that can be
D 3951 Practice for Commercial Packaging
laid out and machined to the finished dimensions within the
E 29 Practice for Using Significant Digits in Test Data to
4 permissible variations specified, as shown on the drawings,
Determine Conformance with Specifications
shall rest with the manufacturer, except where mold equipment
E 35 Test Methods for Chemical Analysis of Magnesium
5 is furnished by the purchaser. Sufficient stock shall be allowed
and Magnesium Alloys
forshrinkageand,whererequired,forfinishing;butcastingsof
E 88 Practice for Sampling Nonferrous Metals and Alloys
5 excessive weight shall not be furnished.
in Cast Form for Determination of Chemical Composition
5. Treatment
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5.1 The castings may be subjected to such heat treatment as
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
the manufacturer desires to produce material that will conform
Magnesium Alloy Cast and Wrought Products.
Current edition approved Apr. 10, 2002. Published June 2002. Originally
published as B 403 – 63 T. Last previous edition B 403 – 96.
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Annual Book of ASTM Standards, Vol 02.02. Annual Book of ASTM Standards, Vol 03.03.
3 7
Annual Book of ASTM Standards, Vol 15.09. Annual Book of ASTM Standards, Vol 01.01.
4 8
Annual Book of ASTM Standards, Vol 14.02. Available from Standardization Documents Order Desk, Bldg. 4 Section D700
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Annual Book of ASTM Standards, Vol 03.05. Robbins Ave., Philadelphia, PA 19111-5098, Attn: NPODS.
*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.
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B 403
A
TABLE 1 Chemical Composition Limits
NOTE 1—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 acceptance and reject
...