ASTM B80-97

Standard Specification for Magnesium-Alloy Sand Castings

SCOPE
1.1 This specification covers magnesium-alloy sand castings 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 in parentheses are provided for information only.

General Information

• Status: Historical
• Publication Date: 09-Apr-2001
• ICS: 77.150.20 - Magnesium products
• Technical Committee: B07 - Light Metals and Alloys
• Drafting Committee: B07.04 - Magnesium Alloy Cast and Wrought Products

Relations

• Replaced By: ASTM B80-01 - Standard Specification for Magnesium-Alloy Sand Castings
• Effective Date: 10-Apr-2001
• Referred By: ASTM B881-17 - Standard Terminology Relating to Aluminum- and Magnesium-Alloy Products
• Effective Date: 10-Apr-2001
• Referred By: ASTM B93/B93M-21 - Standard Specification for Magnesium Alloys in Ingot Form for Sand Castings, Permanent Mold Castings, and Die Castings
• Effective Date: 10-Apr-2001
• Referred By: ASTM B951-11(2018) - Standard Practice for Codification of Unalloyed Magnesium and Magnesium-Alloys, Cast and Wrought
• Effective Date: 10-Apr-2001
• Referred By: ASTM F3160-21 - Standard Guide for Metallurgical Characterization of Absorbable Metallic Materials for Medical Implants
• Effective Date: 10-Apr-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: B 80 – 97
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Magnesium-Alloy Sand Castings
This standard is issued under the fixed designation B 80; 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 E 527 Practice for Numbering Metals and Alloys (UNS)
E 716 Practices for Sampling Aluminum and Aluminum
1.1 This specification covers magnesium-alloy sand cast-
Alloys for Spectrochemical Analysis
ings designated as shown in Table 1.
2.3 Federal Standards:
1.2 The values stated in inch-pound units are to be regarded
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
as the standard. The SI values in parentheses are provided for
Fed. Std. No. 184 Identification Marking of Aluminum,
information only.
Magnesium and Titanium
2. Referenced Documents
2.4 Military Standards:
MIL-STD-129 Marking for Shipment and Storage (Military
2.1 The following documents of the issue in effect on date
Agencies)
of order acceptance form a part of this specification to the
MIL-STD-276 Impregnation of Porous Non-ferrous Metal
extent referenced herein:
Castings
2.2 ASTM Standards:
MIL-I-13857 Impregnation of Metal Castings
B 93/B93M Specification for Magnesium Alloys in Ingot
MIL-M-46062 Magnesium Alloy Castings, High Strength
Form for Sand Castings, Permanent Mold Castings, and
MIL-M-6857 Heat Treatment of Magnesium Alloy Cast-
Die Castings
ings
B 275 Practice for Codification of Certain Nonferrous Met-
2.5 ANSI Standard:
als and Alloys, Cast and Wrought
ANSI Z1.4 Sampling Procedures and Tables for Inspection
B 296 Practice for Temper Designations of Magnesium
by Attributes
Alloys, Cast and Wrought
B 557 Test Methods of Tension Testing Wrought and Cast
3. Terminology
Aluminum- and Magnesium-Alloy Products
3.1 Definitions:
B 660 Practices for Packaging/Packing of Aluminum and
3.1.1 casting lot—unless otherwise agreed, shall consist of
Magnesium Products
not more than 1000 pounds of cleaned castings from the same
B 661 Practice for Heat Treatment of Magnesium Alloys
melt or heat, except where this weight limit may be exceeded
E 29 Practice for Using Significant Digits in Test Data to
by a single casting. In such cases, each casting shall be
Determine Conformance with Specifications
considered a lot.
E 35 Test Methods for Chemical Analysis of Magnesium
3.1.2 heat treat lot—for the purpose of mechanical property
and Magnesium Alloys
testing, a lot shall consist of all castings heat treated in the
E 88 Practice for Sampling Nonferrous Metals and Alloys
4 same furnace charge to the same temper.
in Cast Form for Determination of Chemical Composition
3.1.3 sand casting—metal object produced by pouring mol-
E 94 Guide for Radiographic Testing
ten metal into a sand mold and allowing it to solidify.
E 155 Reference Radiographs for Inspection of Aluminum
and Magnesium Castings
4. Ordering Information
E 165 Test Method for Liquid Penetrant Examination
5 4.1 Orders for castings under this specification shall include
Method
the following information:
4.1.1 Applicable drawing or part number,
4.1.2 Quantity of each casting,
This specification is under the jurisdiction of ASTM Committee B-7 on Light
Metals and Alloys, and is the direct responsibility of Subcommittee B07.04 on
Magnesium Alloy Cast and Wrought Products.
Current edition approved Oct. 10, 1997. Published May 1998. Originally Annual Book of ASTM Standards, Vol 01.01.
published as B 80 – 30 T. Last previous edition B 80 – 93. Annual Book of ASTM Standards, Vol 03.06.
2 8
Annual Book of ASTM Standards, Vol 02.02. Available from Standardization Documents, Order Desk, Bldg. 4, Section D,
Annual Book of ASTM Standards, Vol 14.02. 700 Robbins Ave., Philadelphia, PA 19111-5094, ATTN: NPODS.
4 9
Annual Book of ASTM Standards, Vol 03.05. Available from American National Standards Institute, 11 W. 42nd St., 13th
Annual Book of ASTM Standards, Vol 03.03. Floor, New York, NY 10036.
B80
A
TABLE 1 Chemical Requirements
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 %
Others
C
Total
Magne- Alu- Man- Rare (Metallic
ASTM UNS Iron Zinc Thorium Zirconium Silicon Copper Nickel Impu-
sium minum ganese Earths Impurities)
rities
Each
AM100A M10100 . remainder 9.3–10.7 0.10–0.35 0.30 . . . 0.30 0.10 0.01 . 0.30
AZ63A M11630 . remainder 5.3–6.7 0.15–0.35 2.5–3.5 . . . 0.30 0.25 0.01 . 0.30
AZ81A M11810 . remainder 7.0–8.1 0.13–0.35 0.40–1.0 . . . 0.30 0.10 0.01 . 0.30
AZ91C M11914 . remainder 8.1–9.3 0.13–0.35 0.40–1.0 . . . 0.30 0.10 0.01 . 0.30
D
AZ91E M11919 0.005 remainder 8.1–9.3 0.17–0.35 0.40–1.0 . . . 0.20 0.015 0.0010 0.01 0.30
AZ92A M11920 . remainder 8.3–9.7 0.10–0.35 1.6–2.4 . . . 0.30 0.25 0.01 . 0.30
E F
EQ21A M18330 . remainder . . . . 1.5–3.0 0.40–1.0 . 0.05–0.10 0.01 . 0.30
EZ33A M12330 . remainder . . 2.0–3.1 . 2.5–4.0 0.50–1.0 . 0.10 0.01 . 0.30
HK31A M13310 . remainder . . 0.30 2.5–4.0 . 0.40–1.0 . 0.10 0.01 . 0.30
HZ32A M13320 . remainder . . 1.7–2.5 2.5–4.0 0.10 0.50–1.0 . 0.10 0.01 . 0.30
K1A M18010 . remainder . . . . . 0.40–1.0 . . . . 0.30
G G F
QE22A M18220 . remainder . . . . 1.8–2.5 0.40–1.0 . 0.10 0.01 . 0.30
G G H H,F
QH21A M18210 . remainder . . 0.20 0.6–1.6 0.6–1.5 0.40–1.0 . 0.10 0.01 . 0.30
I J
WE43A M18430 0.01 remainder . 0.15 0.20 . 2.4–4.4 0.40–1.0 0.01 0.03 0.005 0.2 0.3
I J
WE54A M18410 . remainder . 0.15 0.20 . 1.5–4.0 0.40–1.0 0.01 0.03 0.005 0.20 0.30
ZC63A M16331 . remainder . 0.25–0.75 5.5–6.5 . . . 0.20 2.4–3.0 0.01 . 0.30
ZE41A M16410 . remainder . 0.15 3.5–5.0 . 0.75–1.75 0.40–1.0 . 0.10 0.01 . 0.30
ZE63A M16630 . remainder . . 5.5–6.0 . 2.1–3.0 0.40–1.0 . 0.10 0.01 . 0.30
ZH62A M16620 . remainder . . 5.2–6.2 1.4–2.2 . 0.50–1.0 . 0.10 0.01 . 0.30
ZK51A M16510 . remainder . . 3.6–5.5 . . 0.50–1.0 . 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 % max unless shown as a range or stated otherwise.
B
ASTM alloy designations were established in accordance with Practice B 275. UNS designations were established in accordance with Practice E 527.
C
Includes listed elements for when 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 shall be 1.3 to 1.7 %.
F
Rare earth elements are in the form of didymium, with not less than 70 % neodymium, and the remainder substantially praesodymium.
G
Silver content for alloy QE22A shall be 2.0 to 3.0 %.
H
Thorium and didymium total is 1.5 to 2.4 %.
I
Yttrium content for alloys WE43A and WE54A shall be 3.7 to 4.3 and 4.75 to 5.5 %, respectively.
J
Rare earths are 2.0 to 2.5 and 1.5 to 2.0 % Neodymium for WE43A and WE54A, respectively, the remainder being heavy rare earths.
4.1.3 Specification number and title, suitable for the performance of the inspection requirements
4.1.4 Alloy (Section 9 and Table 1), specified herein, unless disapproved by the purchaser. The
4.1.5 Temper (Section 11, Table 2 and X1.2), purchaser reserves the right to perform any of the inspections
4.1.6 Whether foundry control is required (Section 8), set forth in the specification where such inspections are deemed
4.1.7 Whether test specimens cut from castings are required necessary to ensure supplies and services conform to pre-
in addition to, or instead of, separately cast test specimens scribed requirements.
(Section 12 and Table X1.2),
6. Material Requirements
4.1.8 Whether liquid penetrant inspection is required (15.2),
4.1.9 Whether radiographic inspection is required (15.3),
6.1 Unless otherwise specified, only magnesium alloy in-
4.1.10 Whether pressure testing is required (15.4), gots or producer’s foundry scrap conforming to Specification
4.1.11 Whether source inspection is required (Section 17),
B 93 shall be used for pouring castings. Additions of small
4.1.12 Whether repairs are permissible (Section 19), amounts of grain refining elements and material for melt
4.1.13 Whether chemical analysis and mechanical property
process losses are permitted.
reports or certifications, or both, are required (Section 20),
6.2 Pure materials and master alloys may be used provided
4.1.14 Whether special packaging is required for shipment
chemical analysis verifying conformance to Table 1 is done
(Section 22).
prior to pouring any castings.
5. Responsibility for Quality Assurance 7. Manufacture
5.1 Responsibility for Inspection—Unless otherwise speci- 7.1 The responsibility of furnishing castings that can be laid
fied in the contract or purchase order, the supplier is respon- out and machined to the finished dimensions within the
sible for the performance of all inspection requirements as permissible variations specified, as shown on the blueprints or
specified herein. Except as otherwise specified in the contract drawings, shall rest with the supplier, except when pattern
or order, the supplier may use his own or any other facilities equipment is furnished by the purchaser. Sufficient stock shall
B80
TABLE 2 Tensile Requirements
NOTE 1—For purposes of determining conformance with this specification, each value for tensile strength and yield strength shall be rounded to the
nearest 0.1 ksi and each value for elongation shall be rounded to the nearest 0.5 %, both in accordance with the rounding method of Practice E 29.
B
Alloy Number
Tensile Strength, min, Yield Strength (0.2 % Elongation in 2 in., (50.8
A
Temper
ksi (MPa) offset), min, ksi (MPa) mm) min, %
ASTM UNS
C
AM100A M10100 T6 35.0(241) 17.0(117)
AZ63A M11630 F 26.0(179) 11.0(76) 4
T4 34.0(234) 11.0(76) 7
T5 26.0(179) 12.0(83) 2
T6 34.0(234) 16.0(110) 3
AZ81A M11810 T4 34.0(234) 11.0(76) 7
C
AZ91C M11914 F 23.0(158) 11.0(76)
T4 34.0(234) 11.0(76) 7
T5 23.0(158) 12.0(83) 2
T6 34.0(234) 16.0(110) 3
AZ91E M11919 T6 34.0(234) 16.0(110) 3
C
AZ92A M11920 F 23.0(158) 11.0(76)
T4 34.0(234) 11.0(76) 6
C
T5 23.0(158) 12.0(83)
T6 34.0(234) 18.0(124) 1
EQ21A M18330 T6 34.0(234) 25.0(172) 2
EZ33A M12330 T5 20.0(138) 14.0(96) 2
HK31A M13310 T6 27.0(186) 13.0(89) 4
HZ32A M13320 T5 27.0(186) 13.0(89) 4
K1A M18010 F 24.0(165) 6.0(41) 14
QE22A M18220 T6 35.0(241) 25.0(172) 2
QH21A M18210 T6 35.0(241) 27.0(186) 2
WE43A M18430 T6 32.0(221) 25.0(172) 2
WE54A M18410 T6 37.0(255) 26.0(179) 2
ZC63A M16331 T6 28.0(193) 18.0(125) 2
ZE41A M16410 T5 29.0(200) 19.5(133) 2.5
ZE63A M16630 T6 40.0(276) 27.0(186) 5
ZH62A M16620 T5 35.0(241) 22.0(152) 5
ZK51A M16510 T5 34.0(234) 20.0(138) 5
ZK61A M16610 T6 40.0(276) 26.0(179) 5
A
These temper designations were established in accordance with Practice B 296.
B
See X1.4.1.
C
Not required.
be allowed for shrinkage, and where requested, for finishing; composition limits prescribed in Table 1. Conformance shall be
but castings of excessive weight shall not be furnished. determined by analyzing samples taken when the castings are
7.2 The castings may be subjected to such heat treatment as poured, or by analyzing samples taken from the finished
deemed necessary to produce material that will conform to the product. If the chemical composition has been determined
requirements specified. Heat treatment shall be performed on during the course of manufacture, sampling and analysis of the
the whole of a casting, never on a part only, and shall be finished product shall not be necessary.
applied in a manner that will produce the utmost uniformity.
10. Sampling for Chemical Composition
NOTE 1—Alloy ZE63A requires solution heat treatment in hydrogen as
explained in X1.1.15. 10.1 For determination of chemical composition, one
sample of each casting lot shall be taken in accordance with
8. Foundry Control
Practice E 88 for chemical analysis or Practice E 716 for
8.1 When specified, castings shall be produced under
spectrochemical analysis.
foundry control approved by the purchaser. Foundry control
10.1.1 Samples for other methods of chemical analysis shall
shall consist of examination of the castings by radiographic or
be suitable for the form of material being analyzed and the type
other approved methods for determining internal discontinui-
of analytical method used. In case of dispute, analyses should
ties until the gating, pouring, and other foundry practices have
be made by methods given in Methods E 35.
been established to produce castings meeting the quality
standards set by purchaser or agreed to between the purchaser
11. Heat Treatment
and the producer. When foundry practices have been so
11.1 Unless otherwise specified, heat treatment for the
established, the production method shall not be significantly
applicable tempers designated in Table 2 and X1.2 shall be in
changed without demonstrating to the satisfaction of the
accordance with Military Specification MIL-M-6857 or Prac-
purchaser that the change does not adversely affect the quality
tice B 661. Heat treatment shall be performed on the whole
of the castings. Minor changes in pouring temperature of
casting and never on a portion.
650°F from the established nominal temperature are permis-
11.2 Each heat treat furnace charge shall contain at least one
sible.
set of test bars of the same composition range as the castings.
9. Chemical Composition Requirements
The satisfactory heat treatment of the furnace charge shall be
9.1 Limits—The castings shall conform to the chemical determined by the results from these test bars, which must
B80
conform to the requirements of Table 2 or Table X1.2 where separately cast in the system sand mix in use and shall be cast
required. to
...