ASTM B93/B93M-03

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: B 93/B 93M – 03
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 B 93/B 93M; 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 3.1.1 Quantity in pounds (kilograms)
3.1.2 Alloy (Section 4 and Table 1 or Table 2), and
1.1 This specification covers magnesium alloys in ingot
3.1.3 Form: as agreed upon between the purchaser and
form for remelting for the manufacture of sand castings,
seller. Some forms in commercial use are:
permanent mold castings, investment castings, and die cast-
Approximate
ings.
Approximate Size Length by Width
Form Weight,
by Height, in. (mm)
lb (kg)
NOTE 1—Supplementary information pertaining to the alloys covered
3 3
Five-segment 23 by 2 ⁄4 by 1 ⁄4 (583 by 70 by 44) 5 (2.3)
by this specification when used in the form of castings is given in
1
Four-segment 28 by 4 ⁄2 by 4 (711 by 114 by 102) 20 (9.1)
Specifications B 80, B 94, B 199 and B 403.
1 5 5
Self-Palletizing 26 ⁄2 by 6 ⁄8 by 2 ⁄8 (672 by 168 by 67) 25 (11.3)
1.2 The values stated in either inch-pound units or SI units
3.1.4 Inspection required at the manufacturer’s works (see
are to be regarded separately as standard. The values stated in
8.1).
each system are not exact equivalents; therefore, each system
3.1.5 For inch-pound orders specify B93; for metric orders
shall be used independently of the other.
specify B93M. Do not mix units.
2. Referenced Documents
4. Chemical Composition
2.1 The following documents of the issue in effect on date
4.1 The ingots shall conform to the chemical composition
of order acceptance form a part of this specification to the
limits prescribed in Table 1 for sand cast alloys and permanent
extent referenced herein:
mold-cast alloys and in Table 2 for die-cast alloys. Conform-
2.2 ASTM Standards:
ance shall be determined by the manufacturer by analyzing
B 275 Practice for Codification of Certain Nonferrous Met-
samples taken at the time the ingots are poured or samples
2
als and Alloys, Cast and Wrought
taken from the ingots. If the manufacturer has determined the
E 29 Practice for Using Significant Digits in Test Data to
chemical composition of the material during manufacture, he
3
Determine Conformance with Specifications
shall not be required to sample and analyze the ingots.
E 35 Test Methods for Chemical Analysis of Magnesium
4.2 The alloys shall conform to the chemical composition
4
and Magnesium Alloys
requirements prescribed in Table 1 and Table 2 (Note 2 and
E 88 Practice for Sampling Nonferrous Metals and Alloys
Note 3).
4
in Cast Form for Determination of Chemical Composition
5
NOTE 2—Analysis shall regularly be made only for the elements
E 527 Practice for Numbering Metals and Alloys (UNS)
specifically mentioned in the tables. If, however, the presence of other
elements is suspected or indicated in the course of routine analysis, further
3. Ordering Information
analysis shall be made to determine that the total of these other elements
3.1 Orders for ingot to this specification shall include the
is not in excess of the limits specified in the last column of the table.
following information:
NOTE 3—The following applies to all specified limits in the tables: For
purposes of acceptance and rejection, an observed value or a calculated
value obtained from analysis shall be rounded off in accordance with the
1
This specification is under the jurisdiction of ASTM Committee B07 on Light
rounding off method of Practice E 29 to the nearest unit in the last
Metals and Alloys and is the direct responsibility of Subcommittee B07.04 on
right-hand place of figures used in expressing the specified limit.
Magnesium Alloy Cast and Wrought Products.
Current edition approved Aug. 10, 2003. Published Septemberr 2003. Originally
5. Workmanship, Finish and Appearance
approved in 1934. Last previous edition approved in 2000 as B 93/B 93M–00.
2
Annual Book of ASTM Standards, Vol 02.02. 5.1 The ingots shall be uniform in quality and shall be
3
Annual Book of ASTM Standards, Vol 14.02.
commercially free of slag or other foreign material.
4
Annual Book of ASTM Standards, Vol 03.05.
5
Annual Book of ASTM Standards, Vol 01.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
B 93/B 93M – 03
TABLE 1 Chemical Requirements for Alloy Ingot for Remelt to Sand, Permanent, Mold and In
...