ASTM A193/A193M-03
(Specification)Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service
Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service
SCOPE
1.1 This specification covers alloy and stainless steel bolting material for pressure vessels, valves, flanges, and fittings for high-temperature service. 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 13.
1.4 Supplementary Requirements S1 through S10 are provided for use when additional tests or inspection are desired. 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. 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: A 193/A 193M – 03
Standard Specification for
Alloy-Steel and Stainless Steel Bolting Materials for High-
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Temperature Service
This standard is issued under the fixed designation A 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 (e) 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* 1.5 This specification is expressed in both inch-pound units
2 and in SI units. However, unless the order specifies the
1.1 This specification covers alloy and stainless steel bolt-
applicable M specification designation (SI units), the material
ing material for pressure vessels, valves, flanges, and fittings
shall be furnished to inch-pound units.
for high-temperature service. The term bolting material as used
1.6 The values stated in either inch-pound units or SI units
in this specification covers bars, bolts, screws, studs, stud bolts,
are to be regarded separately as standard. Within the text, the
and wire. Bars and wire shall be hot-wrought. The material
SI units are shown in brackets. The values stated in each
may be further processed by centerless grinding or by cold
system are not exact equivalents; therefore, each system must
drawing. Austenitic stainless steel may be carbide solution
be used independently of the other. Combining values from the
treated or carbide solution treated and strain-hardened. When
two systems may result in nonconformance with the specifi-
strain hardened austenitic steel is ordered, the purchaser should
cation.
take special care to ensure that Appendix X1 is thoroughly
understood.
2. Referenced Documents
1.2 Several grades are covered, including ferritic steels and
2.1 ASTM Standards:
austenitic stainless steels designated B5, B8, and so forth.
A 194/A 194M Specification for Carbon and Alloy Steel
Selection will depend upon design, service conditions, me-
Nuts for Bolts for High-Pressure or High-Temperature
chanical properties, and high-temperature characteristics.
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Service, or Both
NOTE 1—The committee formulating this specification has included
A 320/A 320M Specification for Alloy/Steel Bolting Mate-
fifteen steel types that have been rather extensively used for the present 3
rials for Low-Temperature Service
purpose. Other compositions will be considered for inclusion by the
A 354 Specification for Quenched and Tempered Alloy
committee from time to time as the need becomes apparent.
Steel Bolts, Studs, and Other Externally Threaded Fasten-
NOTE 2—For grades of alloy-steel bolting material suitable for use at
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ers
the lower range of high-temperature applications, reference should be
made to Specification A 354.
A 962/A 962M Specification for Common Requirements
NOTE 3—For grades of alloy-steel bolting material suitable for use in
for Steel Fasteners or Fastener Materials, or Both, Intended
low-temperature applications, reference should be made to Specification
for Use at Any Temperature from Cryogenic to the Creep
A 320/A 320M.
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Range
1.3 Nuts for use with this bolting material are covered in
E 18 Test Methods for Rockwell Hardness and Rockwell
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Section 13.
Superficial Hardness of Metallic Materials
1.4 Supplementary Requirements S1 through S10 are pro-
E 21 Test Methods for Elevated Temperature Tension Tests
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vided for use when additional tests or inspection are desired.
of Metallic Materials
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These shall apply only when specified in the purchase order.
E 112 Test Methods for Determining Average Grain Size
E 139 Test Methods for Conducting Creep, Creep-Rupture,
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and Stress-Rupture Tests of Metallic Materials
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
E 150 Practice for Conducting Creep and Creep-Rupture
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
Tension Tests of Metallic Materials Under Conditions of
A01.22 on Steel Forgings and Wrought Fittings for Piping Applications and Bolting
Materials for Piping and Special Purpose Applications.
Current edition approved May 10, 2003. Published July 2003. Originally
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approved in 1936. Last previous edition approved in 2001 as A 193/A 193M-01b. Annual Book of ASTM Standards, Vol 01.01.
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For ASME Boiler and Pressure Vessel Code applications, see related Specifi- Annual Book of ASTM Standards, Vol 01.08.
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cation SA-193 in Section II of that Code. Annual Book of ASTM Standards, Vol 03.01.
*A Summary of Changes section appears at the end of this standard.
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