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ASTM A148/A148M-93b(1998)

(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-Mar-2001
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

Replaced By
ASTM A148/A148M-01 - Standard Specification for Steel Castings, High Strength, for Structural Purposes
Effective Date
10-Mar-2001
Referred By
ASTM A488/A488M-18e2 - Standard Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel
Effective Date
10-Mar-2001
Referred By
ASTM A957/A957M-21 - Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
Effective Date
10-Mar-2001
Referred By
ASTM A781/A781M-21 - Standard Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
Effective Date
10-Mar-2001
Referred By
ASTM F1106-87(2023) - Standard Specification for Warping Heads, Rope Handling (Gypsy Head, Capstan Head)
Effective Date
10-Mar-2001
Referred By
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Effective Date
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ASTM A148/A148M-93b(1998) - Standard Specification for Steel Castings, High Strength, for Structural PurposesASTM A148/A148M-93b(1998) - Standard Specification for Steel Castings, High Strength, for Structural Purposes
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ASTM A148/A148M-93b(1998) - Standard Specification for Steel Castings, High Strength, for Structural Purposes
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation: A 148/A148M – 93b (Reapproved 1998)
Standard Specification for
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 (ϵ) 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 and alloy steel
Grade Composition, %
castings that are to be subjected to higher mechanical stresses
Sulfur, max Phospho-
than those covered in Specification A27A27/A27M/A27M.
rus, max
1.2 Several grades of steel castings are covered, having the
80-40 [550-275] 0.06 0.05
chemical composition and mechanical properties prescribed in
80-50 [550-345] 0.06 0.05
90-60 [620-415] 0.06 0.05
Table 1 and Table 2.
105-85 [725-585] 0.06 0.05
1.3 The values stated in inch-pound units or SI units are to
115-95 [795-655] 0.06 0.05
beregardedseparatelyasstandard.Withinthetext,theSIunits 130-115 [895-795] 0.06 0.05
135-125 [930-860] 0.06 0.05
areshowninbrackets.Thevaluesstatedineachsystemarenot
150-135 [1035-930] 0.06 0.05
exact equivalents; therefore, each system must be used inde-
160-145 [1105-1000] 0.06 0.05
pendentlyoftheother.Combiningvaluesfromthetwosystems 165-150 [1140-1035] 0.020 0.020
165-150L [1140-1035L] 0.020 0.020
may result in nonconformance with the specification.
210-180 [1450-1240] 0.020 0.020
210-180L [1450-1240L] 0.020 0.020
2. Referenced Documents
260-210 [1795-1450] 0.020 0.020
260-210L [1795-1450L] 0.020 0.020
2.1 ASTM Standards:
A27/A27M Specification for Steel Castings, Carbon, for
General Application
A370 TestMethodsandDefinitionsforMechanicalTesting
3 4. Ordering Information
of Steel Products
A781/A781M Specification for Castings, Steel and Alloy, 4.1 The inquiry and order should include or indicate the
Common Requirements for General Industrial Use following:
E29 Practice for Using Significant Digits in Test Data to 4.1.1 A description of the casting by pattern number or
Determine Conformance with Specifications drawing (dimensional tolerances shall be included on the
casting drawing),
3. General Conditions for Delivery
4.1.2 Grade of steel,
3.1 Material furnished to this specification shall conform to
4.1.3 Options in the specification, and
the requirements of Specification A 781A 781/A781M/ 4.1.4 The supplementary requirements desired, including
A781M, including any supplementary requirements that are
the standards of acceptance.
indicated in the purchase order. Failure to comply with the
5. Heat Treatment
general requirements of Specification A781A781/A781M/
A781Mconstitutesnonconformancewiththisspecification.In 5.1 Allcastingsshallbeheattreatedeitherbyfullannealing,
case of conflict between the requirements of this specification normalizing, normalizing and tempering, or quenching and
and SpecificationA781A781/A781M/A781M, this specifica- tempering. Unless otherwise specified in the inquiry, contract,
tion shall prevail. or order, the castings may be heat treated by any of these heat
treatmentsorcombinationoftheseheattreatmentsattheoption
of the manufacturer.
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
5.2 Heat treatment shall be performed after the castings
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
have been allowed to cool below the transformation range.
A01.18 on Castings.
Current edition approved Dec. 15, 1993. Published March 1994. Originally
published as A148–55. Last previous edition A148/A148M–93a. 6. Temperature Control
Annual Book of ASTM Standards, Vol 01.02.
3 6.1 Furnacetemperaturesforheat-treatingshallberegulated
Annual Book of ASTM Standards, Vol 01.03.
by the use of pyrometers.
Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
A 148/A148M – 93b (1998)
TABLE 2 Tensile Requirements
Grade Tensile strength min, Yield point min, Elongation in 2
ksi [MPa] ksi [MPa] in.or50mm, Reduction of Area, min, %
A
min, %
80-40 [550-275] 80 [550] 40 [275] 18 30
80-50 [550-345] 80 [550] 50 [345] 22 35
90-60 [620-415] 90 [620] 60 [415] 20 40
105-85 [725-585] 105 [725] 85 [585] 17 35
115-95 [795-655] 115 [795] 95 [655] 14 30
130-115 [895-795] 130 [895] 115 [795] 11 25
135-125 [930-860] 135 [930] 125 [860] 9 22
150-135 [1035-930] 150 [1035] 135 [930] 7 18
160-145 [1105-1000] 160 [1105] 145 [1000] 6 12
165-150 [1140-1035] 165 [1140] 150 [1035] 5 20
B
165-150L [1140-1035L] 165 [1140] 150 [1035] 5 20
210-180 [1450-1240] 210 [1450] 180 [1240] 4 15
B
210-180L [1450-1240L] 210 [1450] 180 [1240] 4 15
260-210 [1795-1450] 260 [1795] 210 [1450] 3 6
B
260-210L [1795-1450L] 260 [1795] 210 [1450] 3 6
A
When ICI test bars are used in tensile testing as provided for in this specification, the gage length to reduced section diameter ratio shall be 4 to 1.
B
These grades must be charpy impact tested as prescribed in Section 9, and with minimum values as shown in Table 3.
TABLE 3 Impact Requirements
7. Chemical Composition
7.1 The steel shall conform to sulfur and phosphorus re- Grade 165-150L 210-180L 260-210L
[1140- [1450- [1795-
quirements as prescribed in Table 1.
1035L] 1240L] 1450L]
7.2 The content of carbon, manganese, silicon, and alloying
Impact Requirements 20 [27] 15 [20] 6 [8]
elementsmay,byagreement,beprescribedbythepurchaser.If
Charpy V-notch
not specified, the content may be selected by the manufacturer Energy value, ft·lbf [J], min value for
two specimens and minimum aver-
to obtain the required mechanical properties.
age of three specimens
7.3 Whentheanalysisofcarbon,manganese,silicon,orany
Energy value, ft·lbf [J], min for single 16 [22] 12 [16] 4 [5]
specimen
intentionally added alloying element is specifically requested
in the contract or order, it shall be made by the manufacturer
and reported to the purchaser. The results of these analyses
shall not be used as a basis for rejection except by prior
9.3 Test coupons and specimens shall conform to the
agreement.
requirements specified in Section11.
9.4 Impacttestspecimensshallbemachinedtotheformand
8. Tensile Requirements
dimensions shown in Test Methods and Definitions
8.1 One tension test shall be made from each heat and shall
A370A370, Type A, Charpy V-notch specimen, Fig. 11, and
conform to the tensile requirements specified in Table 2.
tested in accordance with those test methods.
8.2 The test coupons and specimens shall conform to
requirements specified in Section 11.
10. Retests
8.3 Tension test coupons shall be machined to the form and
10.1 If the results of the tensile or charpy tests do not
dimension shown in Fig. 5 of Test Methods and Definitions
conform to the requirements specified, heat-treated castings
A370A370 and tested in accordance
...

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Standard Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service

ABSTRACT
This specification covers carbon steel castings for valves, flanges, fittings, or other pressure-containing parts for high-temperature service and of quality suitable for assembly with other castings or wrought-steel parts by fusion welding. Covered here are three grades of carbon steel (Grades WCA, WCB, and WCC), the selection of which shall depend on the design and service conditions, mechanical properties, and the high temperature characteristics. Castings shall be heat treated and furnished, as appropriate to their design and chemical composition, in the annealed, or normalized, or normalized and tempered conditions after they have been allowed to cool below the transformation range. Furnace temperatures for heat treating shall be effectively controlled by pyrometer. Steel castings shall adhere to chemical composition and tensile property requirements, which include tensile strength, yield strength, elongation, and reduction of area. The surface of castings shall be free of adhering elements such as sand, cracks, hot tears, and other discontinuities, and as such be repair welded when judged appropriate.
SCOPE
1.1 This specification2 covers carbon steel castings for valves, flanges, fittings, or other pressure-containing parts for high-temperature service and of quality suitable for assembly with other castings or wrought steel parts by fusion welding.  
1.2 Three grades, WCA, WCB, and WCC, are covered in this specification. Selection will depend upon design and service conditions, mechanical properties, and the high-temperature characteristics.  
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.  
1.4 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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  • Technical specification
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ASTM
ASTM A487/A487M-21(Specification)
Standard Specification for Steel Castings Suitable for Pressure Service

ABSTRACT
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.
SCOPE
1.1 This specification2 covers low-alloy steels and martensitic stainless steels in the normalized and tempered, or quenched and tempered, condition suitable for pressure-containing parts. The weldability of the classes in this specification varies from readily weldable to weldable only with adequate precautions, and the weldability of each class should be considered prior to assembly by fusion welding.  
1.2 Selection will depend on design, mechanical, and service conditions. Users should note that hardenability of some of the grades mentioned may restrict the maximum size at which the required mechanical properties are obtained.  
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.

  • Technical specification
    7 pages
    English language
    sale 15% off
  • Technical specification
    7 pages
    English language
    sale 15% off