ASTM A735/A735M-03(2007)
(Specification)Standard Specification for Pressure Vessel Plates, Low-Carbon Manganese-Molybdenum-Columbium Alloy Steel, for Moderate and Lower Temperature Service
Standard Specification for Pressure Vessel Plates, Low-Carbon Manganese-Molybdenum-Columbium Alloy Steel, for Moderate and Lower Temperature Service
ABSTRACT
This specification covers the standard for low-carbon manganese-molybdenum-columbium alloy steel plates for piping components and welded pressure vessels. Different alloy steel classes are covered such as Class 1, 2, 3, and 4. The steel shall be killed and shall conform to the fine austenitic grain size requirement. As-rolled plates shall undergo precipitation heat treatment, quenching, or tempering. Heat and product analyses shall be performed on the steel and shall conform to the prescribed chemical composition in carbon, manganese, phosphorus, sulfur, silicon, columbium, molybdenum, and copper. Tensile test and notch-toughness test shall be done on the material and shall conform to the required yield strength, tensile strength, and elongation.
SCOPE
1.1 This specification covers low-carbon manganese-molybdenum-columbium alloy steel plates for piping components and welded pressure vessels.
1.2 Four different classes are covered, which provide various tensile strength properties. A Charpy V-notch energy absorption requirement of 20 ft·lbf [27J] at −50°F [−45°C] is specified for all grades.
1.2.1 Classes 1 and 2 provide minimum yield strength levels of 65 ksi [450 MPa] and 70 ksi [485 MPa] respectively. Both classes can be provided in the as-rolled condition or in the quenched-and-tempered condition.
1.2.2 Class 3 provides a minimum yield strength level of 75 ksi [515 MPa]. This grade can be provided in the as-rolled and precipitation heat-treated condition or in the quenched-and-tempered condition.
1.2.3 Class 4 provides a yield strength level of 80 ksi [550 MPa] in the as-rolled and precipitation heat-treated condition.
1.3 Current practice limits plate thickness furnished under this specification. The individual manufacturer should be consulted on size and thickness limitations.
1.4 Welding procedures are of fundamental importance and must be such as not to adversely affect the properties of the material, especially in the heat-affected zone. It is presupposed that welding procedures will be suitable for the materials being welded.
1.5 The values stated in either 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.
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Designation: A735/A735M – 03 (Reapproved 2007)
Standard Specification for
Pressure Vessel Plates, Low-Carbon Manganese-
Molybdenum-Columbium Alloy Steel, for Moderate and
Lower Temperature Service
This standard is issued under the fixed designationA735/A735M; 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.
1. Scope 2. Referenced Documents
1.1 This specification covers low-carbon manganese- 2.1 ASTM Standards:
molybdenum-columbium alloy steel plates for piping compo- A20/A20M Specification for General Requirements for
nents and welded pressure vessels. Steel Plates for Pressure Vessels
1.2 Four different classes are covered, which provide vari- A435/A435M Specification for Straight-Beam Ultrasonic
ous tensile strength properties. A Charpy V-notch energy Examination of Steel Plates
absorption requirement of 20 ft·lbf [27J] at −50°F [−45°C] is A577/A577M Specification for UltrasonicAngle-Beam Ex-
specified for all grades. amination of Steel Plates
1.2.1 Classes 1 and 2 provide minimum yield strength A578/A578M Specification for Straight-Beam Ultrasonic
levels of 65 ksi [450 MPa] and 70 ksi [485 MPa] respectively. Examination of Rolled Steel Plates for Special Applica-
Bothclassescanbeprovidedintheas-rolledconditionorinthe tions
quenched-and-tempered condition.
3. General Requirements and Ordering Information
1.2.2 Class 3 provides a minimum yield strength level of
75 ksi [515 MPa]. This grade can be provided in the as-rolled 3.1 Plates supplied to this product specification shall con-
form to the requirements of Specification A20/A20M, which
and precipitation heat-treated condition or in the quenched-
and-tempered condition. outlines the testing and retesting methods and procedures,
permissible variations in dimensions and mass, quality and
1.2.3 Class 4 provides a yield strength level of 80 ksi [550
MPa] in the as-rolled and precipitation heat-treated condition. repair of defects, marking, loading, and so forth.
1.3 Current practice limits plate thickness furnished under 3.2 Specification A20/A20M also establishes the rules for
orderinginformationthatshouldbecompiledwhenpurchasing
this specification. The individual manufacturer should be
consulted on size and thickness limitations. plates to this specification.
3.3 In addition to the basic requirements of this specifica-
1.4 Welding procedures are of fundamental importance and
must be such as not to adversely affect the properties of the tion, certain supplementary requirements are available where
additional control, testing, or examination is required to meet
material, especially in the heat-affected zone. It is presupposed
thatweldingprocedureswillbesuitableforthematerialsbeing the end use requirements.
3.4 The purchaser is referred to the listed supplementary
welded.
1.5 The values stated in either inch-pound units or SI units requirements in this specification and to the detailed require-
ments in Specification A20/A20M.
are to be regarded separately as standard. Within the text, the
SI units are shown in brackets. The values stated in each 3.5 Coils are excluded from qualification to this specifica-
tion until they are processed into finished plates. Plates
system are not exact equivalents; therefore, each system must
beusedindependentlyoftheother.Combiningvaluesfromthe produced from coil means plates that have been cut to
individuallengthsfromcoil.Theprocessordirectlycontrols,or
two systems may result in nonconformance with the specifi-
cation. is responsible for, the operations involved in the processing of
coils into finished plates. Such operations include decoiling,
leveling, cutting to length, testing, inspection, conditioning,
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel,
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee
A01.11 on Steel Plates for Boilers and Pressure Vessels. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Nov. 1, 2007. Published March 2008. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1976. Last previous edition approved in 2003 as A735/A735M–03. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/A0735_A0735M-03R07. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A735/A735M – 03 (2007)
TABLE 1 Chemical Requirements
heat treatment (if applicable), packaging, marking, loading for
shipment, and certification. Heat Product
Element
Analysis, % Analysis, %
NOTE 1—For plates produced from coil and furnished without heat
Carbon, max 0.06 0.08
treatment or with stress relieving only, three test results are reported for
Manganese
each qualifying coil. Additional requirements regarding plates from coil
⁄8 in. [16 mm] and under in 1.20–1.90 1.12–2.04
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:A 735/A 735M–99 Designation: A 735/A 735M – 03 (Reapproved 2007)
Standard Specification for
Pressure Vessel Plates, Low-Carbon Manganese-
Molybdenum-Columbium Alloy Steel, for Moderate and
Lower Temperature Service
ThisstandardisissuedunderthefixeddesignationA735/A735M;thenumberimmediatelyfollowingthedesignationindicatestheyear
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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers low-carbon manganese-molybdenum-columbium alloy steel plates for piping components and
welded pressure vessels.
1.2 Four different classes are covered, which provide various tensile strength properties. A Charpy V-notch energy absorption
requirement of 20 ft·lbf [27J] at −50°F [−45°C] is specified for all grades.
1.2.1 Classes 1 and 2 provide minimum yield strength levels of 65 ksi [450 MPa] and 70 ksi [485 MPa] respectively. Both
classes can be provided in the as-rolled condition or in the quenched-and-tempered condition.
1.2.2 Class 3 provides a minimum yield strength level of 75 ksi [515 MPa]. This grade can be provided in the as-rolled and
precipitation heat-treated condition or in the quenched-and-tempered condition.
1.2.3 Class 4 provides a yield strength level of 80 ksi [550 MPa] in the as-rolled and precipitation heat-treated condition.
1.3 Current practice limits plate thickness furnished under this specification. The individual manufacturer should be consulted
on size and thickness limitations.
1.4 Weldingproceduresareoffundamentalimportanceandmustbesuchasnottoadverselyaffectthepropertiesofthematerial,
especially in the heat-affected zone. It is presupposed that welding procedures will be suitable for the materials being welded.
1.5 Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunits
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.
2. Referenced Documents
2.1 ASTM Standards:
A20/A20M Specification for General Requirements for Steel Plates for Pressure Vessels
A435/A435M Specification for Straight-Beam Ultrasonic Examination of Steel Plates
A577/A577M Specification for Ultrasonic Angle-Beam Examination of Steel Plates
A578/A578MSpecificationforStraight-BeamUltrasonicExaminationofPlainandCladSteelPlatesforSpecialApplications
Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications
3. General Requirements and Ordering Information
3.1Material supplied to this material specification shall conform to the requirements of Specification A20/A20M. These
requirements outline the testing and retesting methods and procedures, permissible variations in dimensions and weight, quality,
repair of defects, marking, loading, etc.
3.2SpecificationA20/A20M also establishes the rules for compliance to the basis of purchase when purchasing material to this
specification.
3.3Certain supplementary requirements considered suitable for use with this specification are listed at the end of the
specification. These include some of the standardized supplementary requirements listed in Specification A20/A20M as well as
additional ones unique to this specification. General Requirements and Ordering Information
3.1 Plates supplied to this product specification shall conform to the requirements of SpecificationA20/A20M, which outlines
ThisspecificationisunderthejurisdictionofASTMCommitteeA-1A01onSteel,StainlessSteel,SteelandRelatedAlloysandisthedirectresponsibilityofSubcommittee
A01.11 on Steel Plates for Boilers and Pressure Vessels.
Current edition approved June 10, 1990.Nov. 1, 2007. Published September 1999.March 2008. Originally published asA735–76.approved in 1976. Last previous edition
A735/A735M–90 (1996). approved in 2003 as A735/A735M–03.
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book ofASTM Standards
, Vol 01.04.volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A 735/A 735M – 03 (2007)
the testing and retesting methods and procedures, permissible variations in dimensions and mass, quality and repair of defects,
marking, loading, and so forth.
3.2 Specification A20/A20M also establishes the rules for ordering information that should be compiled when purchasing
plates to this specification.
3.3 Inadditiontothebasicrequirementsofthisspecification,certainsupplementaryrequirementsareavailablewhereadditional
control, testing, or examination is required to meet the end use requirements.
3.4 The purchaser is referred to the listed supplementary requirements in this specification and to the detailed requirements in
Specification A20/A20M.
3.5 Coilsareexcludedfromqualificationtothisspecificationuntiltheyareprocessedintofinishedplates.Platesproducedfrom
coil means plates that have been cut to individual lengths from coil. The processor directly controls, or is responsible for, the
operations involved in the processing of coils into finished plates. Such operations include decoiling, leveling, cutting to length,
testing, inspection, conditioning, heat treatment (if applicable), packaging, marking, loading for shipment, and certification.
NOTE 1—For plates produced from coil and furnished without heat treatment or with stress relieving only, three test results are reported for each
qualifying coil. Additional requirements regarding plates from coil are described in Specification A20/A20M.
4. Manufacture Materials and Manufacture
4.1 Steelmaking Practice—The steel shall be killed and shall conform to the fine austenitic grain size requirement of
Specification A20A20/A20M/A20M. .
5. Heat Treatment
5.1 As-rolledClass3and4productsplatesshallbeprecipitationheattreatedinthetemperaturerangefrom1000to1200°F[540
to 650°C] for a time to be determined by the manufacturer or processor. Precipitation heat treatment is a subcritical temperature
thermal tr
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