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ASTM A148/A148M-02

(Specification)

Standard Specification for Steel Castings, High Strength, for Structural Purposes

Standard Specification for Steel Castings, High Strength, for Structural Purposes

SCOPE
1.1 This specification covers carbon steel, alloy steel, and martensitic stainless steel castings that are to be subjected to higher mechanical stresses than those covered in Specification A27/A27M.
1.2 Several grades of steel castings are covered, having the chemical composition and mechanical properties prescribed in Table 1 and Table 2.
1.3 The values stated in inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.

General Information

Status
Historical
Publication Date
09-Dec-2002
ICS
77.140.80 - Iron and steel castings
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.18 - Castings
Current Stage
Ref Project

Relations

Replaces
ASTM A148/A148M-01 - Standard Specification for Steel Castings, High Strength, for Structural Purposes
Effective Date
10-Dec-2002
Replaced By
ASTM A148/A148M-03 - Standard Specification for Steel Castings, High Strength, for Structural Purposes
Effective Date
10-Apr-2003
Referred By
ASTM A488/A488M-18e2 - Standard Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel
Effective Date
10-Dec-2002
Referred By
ASTM F765-93(2022) - Standard Specification for Wildcats, Ship Anchor Chain
Effective Date
10-Dec-2002
Referred By
ASTM A781/A781M-21 - Standard Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
Effective Date
10-Dec-2002
Referred By
ASTM A957/A957M-21 - Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
Effective Date
10-Dec-2002
Referred By
ASTM F1106-87(2023) - Standard Specification for Warping Heads, Rope Handling (Gypsy Head, Capstan Head)
Effective Date
10-Dec-2002

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ASTM A148/A148M-02 - Standard Specification for Steel Castings, High Strength, for Structural PurposesASTM A148/A148M-02 - Standard Specification for Steel Castings, High Strength, for Structural Purposes
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ASTM A148/A148M-02 - Standard Specification for Steel Castings, High Strength, for Structural Purposes
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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.
An American National Standard
Designation: A 148/A 148M – 02
Standard Specification for
1
Steel Castings, High Strength, for Structural Purposes
This standard is issued under the fixed designation A 148/A 148M; 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.
TABLE 1 Chemical Requirements
1. Scope *
1.1 This specification covers carbon steel, alloy steel, and
Grade (UNS No.) Composition, %
martensitic stainless steel castings that are to be subjected to
Sulfur, max Phospho-
higher mechanical stresses than those covered in Specification
rus, max
A 27/A 27M.
1.2 Several grades of steel castings are covered, having the
80-40 [550-275] (D50400) 0.06 0.05
80-50 [550-345] (D50500) 0.06 0.05
chemical composition and mechanical properties prescribed in
90-60 [620-415] (D50600) 0.06 0.05
Table 1 and Table 2.
105-85 [725-585] (D50850) 0.06 0.05
1.3 The values stated in inch-pound units or SI units are to
115-95 [795-655] (D50950) 0.06 0.05
be regarded separately as standard. Within the text, the SI units 130-115 [895-795] (D51150) 0.06 0.05
135-125 [930-860] (D51250) 0.06 0.05
are shown in brackets. The values stated in each system are not
150-135 [1035-930] (D51350) 0.06 0.05
exact equivalents; therefore, each system must be used inde-
160-145 [1105-1000] (D51450) 0.06 0.05
pendently of the other. Combining values from the two systems 165-150 [1140-1035] (D51500) 0.020 0.020
165-150L [1140-1035L] (D51501) 0.020 0.020
may result in nonconformance with the specification.
210-180 [1450-1240] (D51800) 0.020 0.020
210-180L [1450-1240L] (D51801) 0.020 0.020
2. Referenced Documents
260-210 [1795-1450] (D52100) 0.020 0.020
260-210L [1795-1450L] (D52101) 0.020 0.020
2.1 ASTM Standards:
A 27/A 27M Specification for Steel Castings, Carbon, for
2
General Application
A 370 Test Methods and Definitions for Mechanical Testing
4. Ordering Information
3
of Steel Products
4.1 The inquiry and order should include or indicate the
A 781/A 781M Specification for Castings, Steel and Alloy,
following:
2
Common Requirements for General Industrial Use
4.1.1 A description of the casting by pattern number or
E 29 Practice for Using Significant Digits in Test Data to
drawing (dimensional tolerances shall be included on the
4
Determine Conformance with Specifications
casting drawing),
4.1.2 Grade of steel,
3. General Conditions for Delivery
4.1.3 Options in the specification, and
3.1 Material furnished to this specification shall conform to
4.1.4 The supplementary requirements desired, including
the requirements of Specification A 781/A 781M, including
the standards of acceptance.
any supplementary requirements that are indicated in the
purchase order. Failure to comply with the general require-
5. Heat Treatment
ments of Specification A 781/A 781M constitutes nonconfor-
5.1 All castings shall be heat treated either by full annealing,
mance with this specification. In case of conflict between the
normalizing, normalizing and tempering, or quenching and
requirements of this specification and Specification A 781/
tempering. Unless otherwise specified in the inquiry, contract,
A 781M, this specification shall prevail.
or order, the castings may be heat treated by any of these heat
treatments or combination of these heat treatments at the option
of the manufacturer.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
5.2 Heat treatment shall be performed after the castings
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
have been allowed to cool below the transformation range.
A01.18 on Castings.
Current edition approved Dec. 10, 2002. Published January 2003. Originally
approved in 1955. Last previous edition approved in 2001 as A 148/A 148M – 01.
6. Temperature Control
2
Annual Book of ASTM Standards, Vol 01.02.
3 6.1 Furnace temperatures for heat-treating shall be regulated
Annual Book of ASTM Standards, Vol 01.03.
4
Annual Book of ASTM Standards, Vol 14.02. by the use of pyrometers.
*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 ----------------------
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 148/A 148M – 02
TABLE 2 Tensile Requirements
Grade Tensile strength min, Yield point min, Elongation in 2
ksi [MPa] ksi [M
...

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This specification covers low-alloy steel and martensitic stainless steels in the normalized and tempered, or quenched and tempered conditions, suitable for pressure-containing parts. All castings shall receive the specified heat treatment requirement: austenitizing temperature, medium, quenching cool, and tempering temperature. Preliminary heat treatment and multiple tempering are permitted. Recording-type pyrometers shall be used to control the furnace temperature. The steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, vanadium, boron, and copper. Residual elements include: copper, nickel, chromium, tungsten, molybdenum, and vanadium. Tensile properties of the steel shall conform to the requirements for tensile strength, yield strength, elongation, reduction of area, hardness, and maximum thickness. Product analysis tolerance is specified. Repair by welding may be done.
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Standard Specification for Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class), for High-Temperature Service

ABSTRACT
This specification covers iron-base, heat-resisting alloy castings, intended for structural elements, containers, and supports in electric furnaces, petroleum still tube supports, and for similar applications. The alloys shall be electric-furnace processed and heat treated. The castings shall conform to the required chemical compositions of nickel, chromium, carbon, nitrogen, manganese, silicon, phosphorus, sulfur, and iron. The specimens shall undergo tension test after aging and short-time high-temperature tension test and shall conform to the required values of tensile strength and elongation. A stress-rupture test shall also be performed wherein the specimens shall conform to the required values of tensile stress. The specimen shall also conform to the required values of magnetic permeability.
SCOPE
1.1 This specification covers iron-base, heat-resisting alloy castings of the 25 % chromium, 12 % nickel class, intended for structural elements, containers, and supports in electric furnaces, petroleum still tube supports, and for similar applications up to 2000 °F [1095 °C].  
1.2 In the absence of significant proportions of elements other than those prescribed in Section 5, the two types of alloys covered by this specification may in general be distinguished as follows:  
1.2.1 Type I—Alloys characterized by relatively low limiting creep stress at temperatures between 1500 and 2000 °F [815 and 1095 °C], and relatively high ductility at ordinary temperatures after aging for short periods at temperatures between 1300 and 1500 °F [705 and 815 °C].  
1.2.2 Type II—Alloys having relatively high limiting creep stress but which may develop low ductility at ordinary temperatures when aged for short periods at temperatures between 1350 and 1500 °F [730 and 815 °C].  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
1.3.1 Within the text, the SI units are shown in brackets.  
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.

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