ASTM B93/B93M-21

Standard Specification for Magnesium Alloys in Ingot Form for Sand Castings, Permanent Mold Castings, and Die Castings

ABSTRACT
This specification covers magnesium alloys in ingot form for remelting for the manufacture of sand castings, permanent mold castings, investment castings, and die castings. The chemical composition shall conform to the requirements and limits prescribed in the specification. Samples for the chemical analysis may be taken from the molten metal when the ingot is poured or from the ingots.
SCOPE
1.1 This specification covers magnesium alloys in ingot form for remelting for the manufacture of sand castings, permanent mold castings, investment castings, and die castings.  
Note 1: Supplementary information pertaining to the alloys covered by this specification when used in the form of castings is given in Specifications B80, B94, B199, and B403.  
1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 30-Apr-2021
• ICS: 77.150.20 - Magnesium products
• Technical Committee: B07 - Light Metals and Alloys
• Drafting Committee: B07.04 - Magnesium Alloy Cast and Wrought Products

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:B93/B93M −21
Standard Specification for
Magnesium Alloys in Ingot Form for Sand Castings,
1
Permanent Mold Castings, and Die Castings
This standard is issued under the fixed designation B93/B93M; 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 U.S. Department of Defense.
1. Scope* B94 Specification for Magnesium-Alloy Die Castings
B199 Specification for Magnesium-Alloy Permanent Mold
1.1 This specification covers magnesium alloys in ingot
Castings
form for remelting for the manufacture of sand castings,
B403 Specification for Magnesium-Alloy Investment Cast-
permanent mold castings, investment castings, and die cast-
ings
ings.
B660 Practices for Packaging/Packing of Aluminum and
NOTE 1—Supplementary information pertaining to the alloys covered
Magnesium Products
by this specification when used in the form of castings is given in
B666/B666M Practice for Identification Marking of Alumi-
Specifications B80, B94, B199, and B403.
num and Magnesium Products
1.2 The values stated in either inch-pound units or SI units
B951 PracticeforCodificationofUnalloyedMagnesiumand
are to be regarded separately as standard. The values stated in
Magnesium-Alloys, Cast and Wrought
each system are not exact equivalents; therefore, each system
B953 Practice for Sampling Magnesium and Magnesium
shall be used independently of the other.
Alloys for Spectrochemical Analysis
1.3 This standard does not purport to address all of the B954 Test Method for Analysis of Magnesium and Magne-
safety concerns, if any, associated with its use. It is the
sium Alloys by Atomic Emission Spectrometry
responsibility of the user of this standard to establish appro- E29 Practice for Using Significant Digits in Test Data to
priate safety, health, and environmental practices and deter-
Determine Conformance with Specifications
mine the applicability of regulatory limitations prior to use. E527 Practice for Numbering Metals and Alloys in the
1.4 This international standard was developed in accor-
Unified Numbering System (UNS)
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the 3. Ordering Information
Development of International Standards, Guides and Recom-
3.1 Orders for ingot to this specification shall include the
mendations issued by the World Trade Organization Technical
following information:
Barriers to Trade (TBT) Committee.
3.1.1 Quantity in pounds (kilograms).
3.1.2 Alloy (Section 4 and Table 1 or Table 2).
2. Referenced Documents
3.1.3 Form, as agreed upon between the purchaser and
2.1 The following documents of the issue in effect on date
seller.
of order acceptance form a part of this specification to the
3.1.4 Inspection required at the manufacturer’s works (see
extent referenced herein:
8.1).
2
3.1.5 For inch-pound orders specify B93; for metric orders
2.2 ASTM Standards:
specify B93M. Do not mix units.
B80 Specification for Magnesium-Alloy Sand Castings
4. Chemical Composition
1
This specification is under the jurisdiction of ASTM Committee B07 on Light
4.1 The ingots shall conform to the chemical composition
Metals and Alloys and is the direct responsibility of Subcommittee B07.04 on
limits prescribed in Table 1 for sand cast alloys and permanent
Magnesium Alloy Cast and Wrought Products.
mold-cast alloys and in Table 2 for die-cast alloys. Confor-
Current edition approved May 1, 2021. Published June 2021. Originally
mance shall be determined by the manufacturer by analyzing
approved in 1934. Last previous edition approved in 2015 as B93/B93M – 15. DOI:
10.1520/B0093_B0093M-21.
samples taken at the time the ingots are poured or samples
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
taken from the ingots. If the manufacturer has determined the
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
chemical composition of the material during manufacture, he
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. shall not be required to sample and analyze the ingots.
*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

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B93/B93M−21
2
TABLE 1 Chemical Requirements for Alloy Ingot for Re
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B93/B93M − 15 B93/B93M − 21
Standard Specification for
Magnesium Alloys in Ingot Form for Sand Castings,
1
Permanent Mold Castings, and Die Castings
This standard is issued under the fixed designation B93/B93M; 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 U.S. Department of Defense.
1. Scope Scope*
1.1 This specification covers magnesium alloys in ingot form for remelting for the manufacture of sand castings, permanent mold
castings, investment castings, and die castings.
NOTE 1—Supplementary information pertaining to the alloys covered by this specification when used in the form of castings is given in Specifications
B80, B94, B199, and B403.
1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each
system are not exact equivalents; therefore, each system shall be used independently of the other.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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:
B80 Specification for Magnesium-Alloy Sand Castings
B94 Specification for Magnesium-Alloy Die Castings
B199 Specification for Magnesium-Alloy Permanent Mold Castings
B403 Specification for Magnesium-Alloy Investment Castings
B660 Practices for Packaging/Packing of Aluminum and Magnesium Products
B666B666/B666M Practice for Identification Marking of Aluminum and Magnesium Products
B951 Practice for Codification of Unalloyed Magnesium and Magnesium-Alloys, Cast and Wrought
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 Magnesium
Alloy Cast and Wrought Products.
Current edition approved May 1, 2015May 1, 2021. Published May 2015June 2021. Originally approved in 1934. Last previous edition approved in 20092015 as
B93/B93M – 09.B93/B93M – 15. DOI: 10.1520/B0093_B0093M-15.10.1520/B0093_B0093M-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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 ----------------------
B93/B93M − 21
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
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)
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
3. Ordering Information
3.1 Orders for ingot to this specification shall include the following information:
3.1.1 Quantity in pounds (kilograms)(kilograms).
3.1.2 Alloy (Section 4 and Table 1 or Table 2), and).
3.1.3 Form:Form, as agreed upon between the purchaser and seller.
3.1.4 Inspection required at the manufacturer’s works (see 8.1).
3.1.5 For inch-pound orders specify B93; for metric orders specify B93M. Do not mix units.
4. Chemical Composition
4.1 The ingots shall conform to the chemical composition limits prescribed in Table 1 for sand cast alloys and permanent
mold-cast alloys and in Table 2 for die-cast alloys. Conformance shall be determined
...