ASTM A823-99(2003)

Standard Specification for Statically Cast Permanent Mold Gray Iron Castings

ABSTRACT
This specification covers gray iron castings that are statically cast in permanent molds. Castings under this specification are classified into a number of grades (A-SA, A-SB, A-SC, A-SS, A-CA, A-CB, A-CC, N-SA, N-SB, N-SC,N-SS, N-CA, N-CB and N-CC) based on the properties of separately cast test bars. The grades are designated A for annealed or N for normalized; followed by an S or a C to designate a solid or a cored casting; followed by an A, B, C, or S to designate the test bar to be poured with the castings. The cast test bar shall be selected on the basis of the controlling section size of the casting and shall have the specified dimensions (diameter and length). Castings may be produced in the as cast state provided the tensile strength and Brinell hardness requirements are met. The chemical composition and heat treatment shall be such as to produce these mechanical requirements as well. A suitable permanent mold design for separately cast test bars is described and the tension test requirements are detailed.
SCOPE
1.1 This specification covers gray iron castings that are statically cast in permanent molds.
1.2 No precise quantitative relationship can be stated between the properties of the iron in various locations of the same casting or between the properties of a casting and those of a test specimen cast from the same iron (see Appendix X1).
1.3 The values stated in inch-pound units are to be regarded as the standard.

General Information

• Status: Historical
• Publication Date: 09-Oct-1999
• ICS: 77.140.80 - Iron and steel castings
• Technical Committee: A04 - Iron Castings
• Drafting Committee: A04.01 - Grey and White Iron Castings

Relations

• Replaces: ASTM A823-99 - Standard Specification for Statically Cast Permanent Mold Gray Iron Castings
• Effective Date: 10-Oct-1999
• Replaced By: ASTM A823-99(2008) - Standard Specification for Statically Cast Permanent Mold Gray Iron Castings
• Effective Date: 01-Oct-2008
• Referred By: ASTM A834-95(2020) - Standard Specification for Common Requirements for Iron Castings for General Industrial Use
• Effective Date: 10-Oct-1999

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A 823 – 99 (Reapproved 2003)
Standard Specification for
1
Statically Cast Permanent Mold Gray Iron Castings
This standard is issued under the fixed designation A 823; 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.
TABLE 1 Permanent Mold Gray Iron Specifications
1. Scope
1.1 This specification covers gray iron castings that are
Grade Tensile Strength, min, ksi BHN
A
statically cast in permanent molds.
(MPa)
1.2 No precise quantitative relationship can be stated be-
Uncored—Annealed
A-SA 30 000 (207) 163–207
tweenthepropertiesoftheironinvariouslocationsofthesame
A-SB 25 000 (172) 163–207
castingorbetweenthepropertiesofacastingandthoseofatest
A-SC 20 000 (138) 163–207
specimen cast from the same iron (see Appendix X1).
A-SS 18 000 (124) 143–207
Cored—Annealed
1.3 The values stated in inch-pound units are to be regarded
A-CA 30 000 (207) 143–207
as the standard.
A-CB 25 000 (172) 143–207
A-CC 20 000 (138) 143–207
2. Referenced Documents
Uncored—Normalized
2 N-SA 30 000 (207) 170–229
2.1 ASTM Standards:
N-SB 25 000 (172) 170–229
A 247 Test Method for Evaluating the Microstructure of
N-SC 20 000 (138) 170–229
N-SS 18 000 (124) 149–229
Graphite in Iron Castings
Cored—Normalized
A 644 Terminology Relating to Iron Castings
N-CA 30 000 (207) 170–229
E 8 Test Methods for Tension Testing of Metallic Materials
N-CB 25 000 (172) 149–229
N-CC 20 000 (138) 149–229
E 10 Test Method for Brinell Hardness of Metallic Materi-
A
Refer to Fig. X1.1 for the relationship between tensile strength and section
als
size.
2.2 Federal Standard:
3
Fed. Std. No. 123 Marking for Shipment
2.3 Military Standard:
3
4.2 Castings may be produced in the as cast state provided
MIL-STD-129 Marking for Shipment and Storage
the requirements of this standard in Table 1 are met. However,
3. Terminology
annealing or normalizing heat treatments are usual and cus-
tomary and are a basis for classification.
3.1 Definitions for many terms common to iron castings are
4.3 The grades are designated A for annealed or N for
found in Terminology A 644. A classification of graphite
normalized.This is followed by an S oraCto designate a solid
structure is found in Test Method A 247.
oracoredcasting,followedbyanA,B,C,orStodesignatethe
4. Classification
test bar to be poured with the castings. Examples of proper
designations are as follows:
4.1 Castings ordered and produced under this specification
Permanent Mold Castings, ASTM Specification A 823,
are classified into a number of grades based on the properties
Grade N-SB
of separately cast test bars.The test bar shall be selected on the
Permanent Mold Castings, ASTM Specification A 823,
basis of the controlling section size of the casting (see 9.1 and
Grade A-CC
9.2 and Table 1).
5. Ordering Information
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5.1 Orders for material to this specification shall include the
This specification is under the jurisdiction of ASTM Committee A04 on Iron
Castings and is the direct responsibility of Subcommittee A04.01 on Gray Iron
following information:
Castings.
5.1.1 ASTM designation number and year of issue.
Current edition approved Oct. 10, 1999. Published November 1999. Originally
5.1.2 Grade of iron required (see Section 4 and Table 1).
approved in 1984. Last previous edition approved in 1999 as A 823 –99.
2
5.1.3 The size of the separately cast test bar (letter classifi-
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
cationA, B, C, or S) which best represents the thickness of the
Standards volume information, refer to the standard’s Document Summary page on
controlling section of the casting (see 4.1 and Table 2).
the ASTM website.
3
5.1.4 Location for Brinell Hardness determination (see
AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS. 10.1.1).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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A 823 – 99 (2003)
TABLE 2 Diameters and Lengths of Cast Test Bars
8. Tensile Requirements
8.1 Test bars representing castings conforming to this speci-
A
As-Cast Diameter, in. (mm) Length, in. (mm)
Test
fication shall meet the requirements for tensile strength de-
Nominal Minimum Maximum Minimum Maximum
Bar
scribed in Table 1.
(Mid-Length) (Bottom) (Top) (Specified) (Recommended)
A 0.88 (22.4) 0.85 (21.6) 0.96 (24.4) 5.0 (125) 6.0 (150)
B 1.20 (30.5) 1.14 (29.0) 1.32 (33.5) 6.0 (150) 9.0 (230) 9. Cast Test Bars
C 2.00 (50.8) 1.90 (4
...