ASTM A48/A48M-00

Standard Specification for Gray Iron Castings

SCOPE
1.1 This specification covers gray iron castings intended for general engineering use where tensile strength is a major consideration. Castings are classified on the basis of the tensile strength of the iron in separately cast test bars.  
1.1.1 This specification subordinates chemical composition to tensile strength.  
1.2 Castings produced to this specification are graded on the basis of minimum tensile strength obtained in special test coupons designed to standardize cooling rate. The tensile strength developed in certain casting sections may vary from test coupon values (see X1.2).  
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 09-May-2001
• 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 A48-94ae1 - Standard Specification for Gray Iron Castings
• Effective Date: 10-May-2001
• Replaced By: ASTM A48/A48M-03 - Standard Specification for Gray Iron Castings
• Effective Date: 01-Dec-2003
• Referred By: ASTM F1510-21 - Standard Specification for Rotary Positive Displacement Pumps, Ships Use
• Effective Date: 10-May-2001
• Referred By: ASTM F1548-01(2023) - Standard Specification for Performance of Fittings for Use with Gasketed Mechanical Couplings Used in Piping Applications
• Effective Date: 10-May-2001
• Referred By: ASTM A888-21a - Standard Specification for Hubless Cast Iron Soil Pipe and Fittings for Sanitary and Storm Drain, Waste, and Vent Piping Applications
• Effective Date: 10-May-2001
• Referred By: ASTM C660-81(2020) - Standard Practices for Production and Preparation of Gray Iron Castings for Porcelain Enameling
• Effective Date: 10-May-2001
• Referred By: ASTM A942/A942M-95(2022) - Standard Specification for Centrifugally Cast White Iron/Gray Iron Dual Metal Abrasion-Resistant Roll Shells
• Effective Date: 10-May-2001
• Referred By: ASTM A126-04(2019) - Standard Specification for Gray Iron Castings for Valves, Flanges, and Pipe Fittings
• Effective Date: 10-May-2001
• Referred By: ASTM C1572/C1572M-23 - Standard Guide for Dry Lead Glass and Oil-Filled Lead Glass Radiation Shielding Window Components for Remotely Operated Facilities
• Effective Date: 10-May-2001
• Referred By: ASTM F1545-15a(2021) - Standard Specification for Plastic-Lined Ferrous Metal Pipe, Fittings, and Flanges
• Effective Date: 10-May-2001
• Referred By: ASTM A74-21 - Standard Specification for Cast Iron Soil Pipe and Fittings
• Effective Date: 10-May-2001
• Referred By: ASTM A1111-22 - Standard Specification for Cast Iron Closet Flanges for Use with Cast Iron Soil Pipe and Fittings in Gravity Flow Plumbing Drain, Waste, and Vent Sanitary Applications
• Effective Date: 10-May-2001
• Referred By: ASTM A834-95(2020) - Standard Specification for Common Requirements for Iron Castings for General Industrial Use
• Effective Date: 10-May-2001
• Referred By: ASTM A319-71(2020) - Standard Specification for Gray Iron Castings for Elevated Temperatures for Non-Pressure-Containing Parts
• Effective Date: 10-May-2001
• Referred By: ASTM E784-89(2022) - Standard Specification for Clamps, Utility, Laboratory, and Holders, Buret and Clamp
• Effective Date: 10-May-2001

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: A 48/A 48M – 00
Standard Specification for
1
Gray Iron Castings
This standard is issued under the fixed designation A 48/A 48M; 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. This specification replaces Federal Specification
QQ-I-652.
1. Scope 3.1.1 Definitions for many terms common to gray iron
castings are found in Terminology A 644.
1.1 This specification covers gray iron castings intended for
general engineering use where tensile strength is a major
4. Classification
consideration. Castings are classified on the basis of the tensile
4.1 Castings ordered and produced in accordance with this
strength of the iron in separately cast test bars.
specification are classified into a number of grades based on the
1.1.1 This specification subordinates chemical composition
properties of separately cast test bars (Table 1). Each class is
to tensile strength.
designated by a number followed by a letter. The number
1.2 Castings produced to this specification are graded on the
indicates the minimum tensile strength of the separately cast
basis of minimum tensile strength obtained in special test
test bar, and the letter indicates the size of the test bar.
coupons designed to standardize cooling rate. The tensile
Examples of proper designations are as follows:
strength developed in certain casting sections may vary from
Gray Iron Castings, ASTM Specification A 48, Class 30B.
test coupon values (see X1.2).
Gray Iron Castings, ASTM Specification A 48, Class 40C.
1.3 The values stated in either inch-pound units or SI units
are to be regarded separately as standard. Within the text, the
5. Ordering Information
SI units are shown in brackets. The values stated in each
5.1 Orders for material to this specification shall include the
system are not exact equivalents; therefore, each system shall
following information:
be used independently of the other. Combining values from the
5.1.1 ASTM designation number and year of issue,
two systems may result in nonconformance with the specifi-
5.1.2 Class of iron required (see 4.1 and Table 1),
cation.
5.1.3 The size of the separately cast test bar (letter
classification—A, B, C, or S) that best represents the thickness
2. Referenced Documents
of the controlling section of the casting (see Table 2),
2.1 ASTM Standards:
2 5.1.4 The tension test specimen (B or C) to be machined
A 644 Terminology Relating to Iron Castings
3 from test bar C (see 13.3, Table 3, and Fig. 1),
E 8 Test Methods for Tension Testing of Metallic Materials
5.1.5 The tension test specimen to be machined from test
2.2 Military Standard:
4 bar S (see 13.4, Table 3, and Fig. 1),
MIL-STD-129 Marking for Shipment and Storage
5.1.6 Lot size (see Section 10),
2.3 Federal Standard:
5.1.7 Special requirements (see Section 6),
Federal Standard No. 123 Marking for Shipment (Civil
4 5.1.8 Saving tested specimens or unbroken test bars (see
Agencies)
15.1), and
3. Terminology 5.1.9 Special preparation for delivery (see Section 19).
3.1 Definitions:
6. Special Requirements
6.1 When agreed upon in writing between the manufacturer
1
This specification is under the jurisdiction of ASTM Committee A04 on Iron and the purchaser, it may be necessary for the castings to meet
Castings and is the direct responsibility of Subcommittee A04.01 on Gray Iron
special requirements as to hardness, chemical composition,
Castings.
microstructure, pressure tightness, radiographic soundness,
Current edition approved May 10, 2000. Published June 2000. Originally
dimensions, surface finish, etc.
published as A 48 – 05. Last previous edition A 48 – 94a.
2
Annual Book of ASTM Standards, Vol 01.02.
3
Annual Book of ASTM Standards, Vol 03.01.
4
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
A 48/A 48M
TABLE 1 Requirements for Tensile Strength of Gray Cast Irons
8. Dimensional Requirements
in Separately Cast Test Bars
8.1 The castings shall conform to the dimensions or draw-
Tensile Strength, Nominal Test Bar
Class ings furnished by the purchaser, or, if there are no drawings, to
min, ksi [MPa] Diameter, in. [mm]
the dimensions predicted by the pa
...