ASTM A148/A148M-15

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

ABSTRACT
This specification covers the standard for carbon steel, alloy steel, and martensitic stainless steel castings that are to be subjected to higher mechanical stresses. All castings shall undergo heat treatment either by full annealing, normalizing, normalizing and tempering, or quenching and tempering and shall be regulated under pyrometers. Several grades of steel castings are covered and shall conform to the required chemical composition for sulfur and phosphorus. A tension test shall be performed and shall conform to the required tensile strength, yield point, and elongation. The notch bar impact properties shall also be determined by testing one set of three Charpy V-notch impact specimens.
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 Tables 1 and 2.    
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 non-conformance with the standard.  
1.3.1 Within the text, the SI units are shown in brackets.

General Information

• Status: Historical
• Publication Date: 31-Aug-2015
• ICS: 77.140.80 - Iron and steel castings
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.18 - Castings

Relations

• Replaces: ASTM A148/A148M-14 - Standard Specification for Steel Castings, High Strength, for Structural Purposes
• Effective Date: 01-Sep-2015
• Replaced By: ASTM A148/A148M-15a - Standard Specification for Steel Castings, High Strength, for Structural Purposes
• Effective Date: 01-Nov-2015
• Referred By: ASTM A488/A488M-18e2 - Standard Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel
• Effective Date: 01-Sep-2015
• Referred By: ASTM F765-93(2022) - Standard Specification for Wildcats, Ship Anchor Chain
• Effective Date: 01-Sep-2015
• Referred By: ASTM A957/A957M-21 - Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
• Effective Date: 01-Sep-2015
• Referred By: ASTM F1106-87(2023) - Standard Specification for Warping Heads, Rope Handling (Gypsy Head, Capstan Head)
• Effective Date: 01-Sep-2015
• Referred By: ASTM A781/A781M-21 - Standard Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
• Effective Date: 01-Sep-2015

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:A148/A148M −15
StandardSpecification for
1
Steel Castings, High Strength, for Structural Purposes
This standard is issued under the fixed designationA148/A148M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* Specification A781/A781M constitutes nonconformance with
this specification. In case of conflict between the requirements
1.1 This specification covers carbon steel, alloy steel, and
of this specification and Specification A781/A781M, this
martensitic stainless steel castings that are to be subjected to
specification shall prevail.
higher mechanical stresses than those covered in Specification
A27/A27M.
4. Ordering Information
1.2 Several grades of steel castings are covered, having the
4.1 The inquiry and order should include or indicate the
chemical composition and mechanical properties prescribed in
following:
Tables 1 and 2.
4.1.1 A description of the casting by pattern number or
1.3 The values stated in either SI units or inch-pound units
drawing (dimensional tolerances shall be included on the
are to be regarded separately as standard. The values stated in
casting drawing),
each system may not be exact equivalents; therefore, each
4.1.2 Grade of steel,
system shall be used independently of the other. Combining
4.1.3 Options in the specification, and
values from the two systems may result in non-conformance
4.1.4 The supplementary requirements desired, including
with the standard.
the standards of acceptance.
1.3.1 Within the text, the SI units are shown in brackets.
4.1.5 Inthecaseofquenchandtemperedcastingstheruling
section, T.
2. Referenced Documents
2
5. Heat Treatment
2.1 ASTM Standards:
A27/A27MSpecification for Steel Castings, Carbon, for
5.1 Allcastingsshallbeheattreatedeitherbyfullannealing,
General Application
normalizing, normalizing and tempering, or quenching and
A370Test Methods and Definitions for Mechanical Testing
tempering. Unless otherwise specified in the inquiry, contract,
of Steel Products
or order, the castings may be heat treated by any of these heat
A781/A781MSpecification for Castings, Steel and Alloy,
treatmentsorcombinationoftheseheattreatmentsattheoption
Common Requirements, for General Industrial Use
of the manufacturer.
E29Practice for Using Significant Digits in Test Data to
5.2 Heat treatment shall be performed after the castings
Determine Conformance with Specifications
have been allowed to cool below the transformation range.
3. General Conditions for Delivery
6. Temperature Control
3.1 Material furnished to this specification shall conform to
6.1 Furnacetemperaturesforheat-treatingshallberegulated
the requirements of Specification A781/A781M, including any
by the use of pyrometers.
supplementary requirements that are indicated in the purchase
order. Failure to comply with the general requirements of
7. Chemical Composition
7.1 The steel shall conform to sulfur and phosphorus re-
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
quirements as prescribed in Table 1.
Stainless Steel and Related Alloysand is the direct responsibility of Subcommittee
A01.18 on Castings.
7.2 The content of carbon, manganese, silicon, and alloying
Current edition approved Sept. 1, 2015. Published September 2015. Originally
elementsmay,byagreement,beprescribedbythepurchaser.If
approved in 1955. Last previous edition approved in 2014 as A148/A148M–14.
not specified, the content may be selected by the manufacturer
DOI: 10.1520/A0148_A0148M-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or to obtain the required mechanical properties.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
7.3 Whentheanalysisofcarbon,manganese,silicon,orany
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. intentionally added alloying element is specifically requested
*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 ----------------------
A148/A148M−15
TABLE 1 Chemical Requirements
Grade (UNS No.) Composition, %
Sulfur, max Phospho-
rus, max
80-40 [550-275] (D50400) 0.06 0.05
80-50 [550-345] (D50500) 0.06 0.05
90-60 [620-415] (D50600) 0.06 0.05
105-85 [725-585] (D50850) 0.06 0.05
115-95 [795-655] (D50950) 0.06 0.05
130-115 [895-795] (D51150) 0.06 0.05
135-125 [930-860] (D51250) 0.06 0.05
150-135 [1035-930] (D51350) 0.06 0.05
1
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: A148/A148M − 14 A148/A148M − 15
Standard Specification for
1
Steel Castings, High Strength, for Structural Purposes
This standard is issued under the fixed designation A148/A148M; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. 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
Tables 1 and 2.
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 non-conformance with the standard.
1.3.1 Within the text, the SI units are shown in brackets.
2. Referenced Documents
2
2.1 ASTM Standards:
A27/A27M Specification for Steel Castings, Carbon, for General Application
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A781/A781M Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
3. General Conditions for Delivery
3.1 Material furnished to this specification shall conform to the requirements of Specification A781/A781M, including any
supplementary requirements that are indicated in the purchase order. Failure to comply with the general requirements of
Specification A781/A781M constitutes nonconformance with this specification. In case of conflict between the requirements of this
specification and Specification A781/A781M, this specification shall prevail.
4. Ordering Information
4.1 The inquiry and order should include or indicate the following:
4.1.1 A description of the casting by pattern number or drawing (dimensional tolerances shall be included on the casting
drawing),
4.1.2 Grade of steel,
4.1.3 Options in the specification, and
4.1.4 The supplementary requirements desired, including the standards of acceptance.
4.1.5 In the case of quench and tempered castings the ruling section, T.
5. Heat Treatment
5.1 All castings shall be heat treated either by full annealing, normalizing, normalizing and tempering, or quenching and
tempering. Unless otherwise specified in the inquiry, contract, 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, Stainless Steel and Related Alloysand is the direct responsibility of Subcommittee A01.18
on Castings.
Current edition approved Nov. 15, 2014Sept. 1, 2015. Published December 2014September 2015. Originally approved in 1955. Last previous edition approved in 20082014
as A148/A148M – 08.A148/A148M – 14. DOI: 10.1520/A0148_A0148M-14.10.1520/A0148_A0148M-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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 ----------------------
A148/A148M − 15
TABLE 1 Chemical Requirements
Grade (UNS No.) Composition, %
Sulfur, max Phospho-
rus, max
80-40 [550-275] (D50400) 0.06 0.05
80-50 [550-345] (D50500) 0.06 0.05
90-60 [620-415] (D50600) 0.06 0.05
105-85 [725-585] (D50850) 0.06 0.05
115-95 [795-655] (D50950) 0.06 0.05
130-115 [895-795] (D51150) 0.06 0.05
135-125 [930-860] (D51250) 0.06 0.05
150-135 [1035-930] (D51350) 0.06 0.05
160-145 [1105-1000] (D51450) 0.06 0.05
165-150 [1140-1035] (D51500) 0.020 0.020
165-150L [1140-1035L] (D51501) 0.020 0.020
210-180 [1450-1240] (D51800) 0.020 0.020
210-180L [1450-1240L] (D51801) 0.020 0.020
260-210 [1795-1450] (D52100) 0.020 0.020
260-210L [1795-1450L
...