ASTM A193/A193M-08a

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:A193/A193M–08 Designation: A 193/A 193M – 08a
Standard Specification for
Alloy-Steel and Stainless Steel Bolting Materials for High
Temperature or High Pressure Service and Other Special
1
Purpose Applications
This standard is issued under the fixed designationA 193/A 193M; 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 Department of Defense.
1. Scope*
2
1.1 This specification covers alloy and stainless steel bolting material for pressure vessels, valves, flanges, and fittings for high
temperature or high pressure service, or other special purpose applications. The term bolting material as used in this specification
covers bars, bolts, screws, studs, stud bolts, and wire. Bars and wire shall be hot-wrought. The material may be further processed
by centerless grinding or by cold drawing.Austenitic stainless steel may be carbide solution treated or carbide solution treated and
strain-hardened. When strain hardened austenitic steel is ordered, the purchaser should take special care to ensure that Appendix
X1 is thoroughly understood.
1.2 Several grades are covered, including ferritic steels and austenitic stainless steels designated B5, B8, and so forth. Selection
will depend upon design, service conditions, mechanical properties, and high temperature characteristics.
NOTE 1—The committee formulating this specification has included fifteen steel types that have been rather extensively used for the present purpose.
Other compositions will be considered for inclusion by the committee from time to time as the need becomes apparent.
NOTE 2—For grades of alloy-steel bolting material suitable for use at the lower range of high temperature applications, reference should be made to
Specification A 354.
NOTE 3—For grades of alloy-steel bolting material suitable for use in low temperature applications, reference should be made to Specification
A 320/A 320M.
1.3 Nuts for use with this bolting material are covered in Section 14.
1.4 SupplementaryRequirementsS1throughS10S14areprovidedforusewhenadditionaltestsorinspectionaredesired.These
shall apply only when specified in the purchase order.
1.5 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable
M specification designation (SI units), the material shall be furnished to inch-pound units.
1.6 The values stated in either inch-pound units or SI units are to be regarded separately as standard. 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. Within the text, the SI units are shown in brackets.
2. Referenced Documents
3
2.1 ASTM Standards:
A 153/A 153M Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware
A 194/A 194M SpecificationforCarbonandAlloySteelNutsforBoltsforHighPressureorHighTemperatureService,orBoth
A 320/A 320M Specification for Alloy-Steel and Stainless Steel Bolting Materials for Low-Temperature Service
A 354 Specification for Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners
A 788/A 788M Specification for Steel Forgings, General Requirements
A 962/A 962M Specification for Common Requirements for Steel Fasteners or Fastener Materials, or Both, Intended for Use
at Any Temperature from Cryogenic to the Creep Range
B 695 Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel
B 696 Specification for Coatings of Cadmium Mechanically Deposited
B 766 Specification for Electrodeposited Coatings of Cadmium
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.22
on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications.
Current edition approvedAprilMay 1, 2008. Published MayJune 2008. Originally approved in 1936. Last previous edition approved in 20072008 asA 193/A 193M-078.
2
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-193 in Section II of that Code.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or con
...

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 193/A 193M–08 Designation: A 193/A 193M – 08a
Standard Specification for
Alloy-Steel and Stainless Steel Bolting Materials for High
Temperature or High Pressure Service and Other Special
1
Purpose Applications
This standard is issued under the fixed designationA 193/A 193M; 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 (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.
1. Scope*
2
1.1 This specification covers alloy and stainless steel bolting material for pressure vessels, valves, flanges, and fittings for high
temperature or high pressure service, or other special purpose applications. The term bolting material as used in this specification
covers bars, bolts, screws, studs, stud bolts, and wire. Bars and wire shall be hot-wrought. The material may be further processed
by centerless grinding or by cold drawing.Austenitic stainless steel may be carbide solution treated or carbide solution treated and
strain-hardened. When strain hardened austenitic steel is ordered, the purchaser should take special care to ensure that Appendix
X1 is thoroughly understood.
1.2 Several grades are covered, including ferritic steels and austenitic stainless steels designated B5, B8, and so forth. Selection
will depend upon design, service conditions, mechanical properties, and high temperature characteristics.
NOTE 1—The committee formulating this specification has included fifteen steel types that have been rather extensively used for the present purpose.
Other compositions will be considered for inclusion by the committee from time to time as the need becomes apparent.
NOTE 2—For grades of alloy-steel bolting material suitable for use at the lower range of high temperature applications, reference should be made to
Specification A 354A354.
NOTE 3—For grades of alloy-steel bolting material suitable for use in low temperature applications, reference should be made to Specification
A 320/A 320MA320/A320M.
1.3 Nuts for use with this bolting material are covered in Section 14.
1.4 SupplementaryRequirementsS1throughS10S14areprovidedforusewhenadditionaltestsorinspectionaredesired.These
shall apply only when specified in the purchase order.
1.5 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable
M specification designation (SI units), the material shall be furnished to inch-pound units.
1.6 The values stated in either inch-pound units or SI units are to be regarded separately as standard. 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. Within the text, the SI units are shown in brackets.
2. Referenced Documents
3
2.1 ASTM Standards:
A153/A153M Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware
A194/A194M Specification for Carbon andAlloy Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both
A320/A320M Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
A354 Specification for Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners
A788/A788M Specification for Steel Forgings, General Requirements
A962/A962M SpecificationforCommonRequirementsforBoltingIntendedforUseatAnyTemperaturefromCryogenictothe
Creep Range
B695 Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel
B696 Specification for Coatings of Cadmium Mechanically Deposited
B766 Specification for Electrodeposited Coatings of Cadmium
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.22
on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications.
Current edition approvedAprilMay 1, 2008. Published MayJune 2008. Originally approved in 1936. Last previous edition approved in 20072008 asA 193/A 193M-078.
2
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-193 in Section II of that Code.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org.
...