ASTM A541/A541M-05

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Designation: A541/A541M – 05
Standard Specification for
Quenched and Tempered Carbon and Alloy Steel Forgings
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for Pressure Vessel Components
This standard is issued under the fixed designationA541/A541M; 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.
1. Scope* 1.4 Unless the order specifies the applicable “M” specifica-
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tion designation, the material shall be furnished to the inch-
1.1 This specification covers requirements for quenched
pound units.
and tempered carbon and alloy steel forgings for pressure
vessel components.
2. Referenced Documents
1.2 All grades are considered weldable under proper condi-
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2.1 ASTM Standards:
tions. Welding technique is of fundamental importance, and it
A275/A275M Practice for Magnetic Particle Examination
ispresupposedthatweldingprocedureandinspectionwillbein
of Steel Forgings
accordance with approved methods for the grade of material
A370 Test Methods and Definitions for Mechanical Testing
used.
of Steel Products
NOTE 1—Grades 1 and 1A have different chemistries but the same
A388/A388M Practice for Ultrasonic Examination of Steel
mechanical requirements.
Forgings
NOTE 2—Designations have been changed as follows:
A788/A788M Specification for Steel Forgings, General Re-
Current Formerly
quirements
Grade 1 Class 1 E208 Test Method for Conducting Drop-Weight Test to
Grade 1A Class 1A
Determine Nil-Ductility Transition Temperature of Ferritic
Grade 1C Class 4
Steels
Grade 2 Class 1 Class 2
Grade 2 Class 2 Class 2A
Grade 3 Class 1 Class 3 3. Ordering Information and General Requirements
Grade 3 Class 2 Class 3A
3.1 In addition to the ordering information required by
Grade 4N Class 1 Class 7
Grade 4N Class 2 Class 7A Specification A788/A788M, the purchaser shall include with
Grade 4N Class 3 Class 7B
the inquiry and order a detailed drawing that locates areas of
Grade 5 Class 1 Class 8
significant loading in the forging (when required); the method
Grade 5 Class 2 Class 8A
Grade 11 Class 4 Class 11C of selecting test locations (see 6.2); purchase option (if any) in
Grade 22 Class 3 Class 22B
accordance with 9.1, and any supplementary requirements
Grade 22 Class 4 Class 22C
desired.
Grade 22 Class 5 Class 22D
Grade 22V Class 22V 3.2 Material supplied to this specification shall conform to
Grade 3V Class 3V
the requirements of Specification A788/A788M, which out-
1.3 The values stated in either inch-pound units or SI lines additional ordering information, manufacturing require-
(metric) units are to be regarded separately as the standard.
ments, testing and retesting methods and procedures, marking,
Within the text and tables, the SI units are shown in brackets. certification,productanalysisvariations,andadditionalsupple-
The values stated in each system are not exact equivalents;
mentary requirements.
therefore,eachsystemmustbeusedindependentlyoftheother.
3.3 If the requirements of this specification are in conflict
Combining values from the two systems may result in noncon-
with the requirements of Specification A788/A788M, the
formance with the specification.
requirements of this specification shall prevail.
4. Chemical Composition
1 4.1 Heat Analysis—The heat analysis obtained from sam-
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
StainlessSteel,andRelatedAlloys,andisthedirectresponsibilityofSubcommittee pling in accordance with Specification A788/A788M shall
A01.06 on Steel Forgings and Billets.
Current edition approved March 1, 2005. Published March 2005. Originally
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approved in 1965. Last previous edition approved in 2004 as A541/A541M – 04. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
DOI: 10.1520/A0541_A0541M-05. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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For ASME Boiler and Pressure Vessel Code applications see related Specifi- Standards volume information, refer to the standard’s Document Summary page on
cation SA-541/SA-541M in Section II of that Code. 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.
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A541/A541M – 05
comply with Table 1 except that the additional features of austenitizing/quenching cycles, the forgings shall be tempered
Supplementary Requirements S8, S9, S10, S12, and S15 shall at a subcritical temperature as described in 5.1.
alsoapplyasindividuallyspecifiedintheorderinginformation.
6. Mechanical Properties
4.2 ProductAnalysis—The manufacturer shall use th
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