ASTM A540/A540M-00

Standard Specification for Alloy-Steel Bolting Materials for Special Applications

SCOPE
1.1 This specification  covers regular and special-quality alloy steel bolting materials which may be used for nuclear and other special applications. Bolting materials as used in this specification cover rolled or forged bars, rotary pierced or extruded seamless tubes, bored bars, or forged hollows from forged or rolled bar segments to be manufactured into bolts, studs, washers, and nuts.  
1.2 Several grades of steel are covered. The grade and class shall be specified by the purchaser.  
1.3 Supplementary requirements of an optional nature are provided for use when special quality is desired. These supplementary requirements call for additional tests to be made and when desired shall be so stated in the order, together with the acceptance limits required.  
1.4 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.  
1.5 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.

General Information

• Status: Historical
• Publication Date: 09-Mar-2000
• ICS: 21.060.01 - Fasteners in general
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.22 - Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications

Relations

• Replaced By: ASTM A540/A540M-04 - Standard Specification for Alloy-Steel Bolting Materials for Special Applications
• Effective Date: 01-May-2004
• Referred By: ASTM A962/A962M-23a - Standard Specification for Common Requirements for Bolting Intended for Use at Any Temperature from Cryogenic to the Creep Range
• Effective Date: 10-Mar-2000

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A 540/A 540M – 00
Standard Specification for
Alloy-Steel Bolting Materials for Special Applications
This standard is issued under the fixed designation A 540/A 540M; 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.
1. Scope E 45 Test Methods for Determining the Inclusion Content
2 of Steel
1.1 This specification covers regular and special-quality
2.2 AIAG Standard:
alloy steel bolting materials which may be used for nuclear and
AIAG B-5 02.00 Primary Metals Identification Tag Appli-
other special applications. Bolting materials as used in this
cation Standard
specification cover rolled or forged bars, rotary pierced or
2.3 ANSI Standards:
extruded seamless tubes, bored bars, or forged hollows from
B 1.1 Unified Screw Threads
forged or rolled bar segments to be manufactured into bolts,
B 18.2.1 Square and Hex Bolts and Screws Including Hex
studs, washers, and nuts.
Cap Screws and Lag Bolts
1.2 Several grades of steel are covered. The grade and class
B 18.2.2 Square and Hex Nuts
shall be specified by the purchaser.
B 18.3 Hexagon Socket and Spline Socket Screws
1.3 Supplementary requirements of an optional nature are
provided for use when special quality is desired. These
3. Ordering Information
supplementary requirements call for additional tests to be made
3.1 Material supplied to this material specification shall
and when desired shall be so stated in the order, together with
conform to Specification A 962/A 962M. These requirements
the acceptance limits required.
outline the testing and retesting methods and procedures,
1.4 This specification is expressed in both inch-pound units
permissible variations in dimensions, and mass, quality and
and in SI units. However, unless the order specifies the
repair of defects, marking, etc.
applicable“ M” specification designation (SI units), the mate-
3.2 In addition to the ordering information specified in
rial shall be furnished to inch-pound units.
Specification A 962/A 962M, orders for material under this
1.5 The values stated in either inch-pound units or SI units
specification shall include the following, as required, to de-
are to be regarded separately as standard. Within the text, the
scribe the desired material adequately:
SI units are shown in brackets. The values stated in each
3.2.1 Condition (Section 4),
system are not exact equivalents; therefore, each system must
3.2.2 Heat treatment (Section 5),
be used independently of the other. Combining values from the
3.2.3 Supplementary Requirements (S1 to S9),
two systems may result in nonconformance with the specifi-
3.2.4 Reports required (Section 16),
cation.
3.2.5 End use, and
2. Referenced Documents 3.2.6 Any special requirements.
3.3 The purchaser is referred to the listed supplementary
2.1 ASTM Standards:
requirements in this specification and to the detailed require-
A 962/A 962M Specification for Common Requirements
ments in Specification A 962/A 962M.
for Steel Fasteners or Fastener Materials, or Both, Intended
3.4 If the requirements of this specification are in conflict
for Use at Any Temperature from Cryogenic to the Creep
with the requirements of Specification A 962/A 962M, the
Range
requirements of this specification shall prevail.
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and Related Alloys, and is the direct responsibility of Subcommittee
A01.22 on Steel Forgings and Wrought Fittings for Piping Applications and Bolting
Materials for Piping and Special Purpose Applications.
Current edition approved March 10, 2000. Published June 2000. Originally Annual Book of ASTM Standards, Vol 03.01.
published as A 540 – 65. Last previous edition A 540/A 540M – 98. Available from Automotive Industry Action Group, 26200 Lahser, Suite 200,
For ASME Boiler and Pressure Vessel Code Applications see related Specifi- Southfield, MI 48034.
cation SA-540 in Section II of that Code. Available from American National Standards Institute, 11 West 42nd Street,
Annual Book of ASTM Standards, Vol 01.01. 13th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A 540/A 540M – 00
4. Manufacture 7.2 Material in the quenched and tempered or quenched,
tempered and stress-relieved condition shall conform to prop-
4.1 The material shall be supplied hot-rolled or hot-forged
erties shown in Table 2 for the specified class.
or cold-finished at the option of the producer. However, if
desired by the purchaser, cold finishing may be specified.
8. Hardness Requirements
5. Heat Treatment
8.1 The hardness shall be determined on the surface of the
5.1 Material which is ordered in the annealed condition
material after removal of decarburization.
shall have a structure suitable for machining. Such annealed
8.2 The hardness of material in the annealed condition shall
bolting material is not intended to be used without subsequent
not be greater than 235 HB.
quenching and tempering as specified in 5.2
8.3 The hardness of material in the quenched and tempered
5.2 Material which is ordered in the liquid-quenched and
or quenched, tempered and stress-relieved condition shall be
tempered condition shall be uniformly reheated from a tem-
within the limits in Table 2 for the specified class.
perature below the cooling transformation range to the proper
austenitizing temperature. It shall be quenched in a liquid
9. Impact Requirements
medium under substantially uniform conditions and then uni-
9.1 Annealed material after proper heat treatment shall be
formly reheated for tempering. The minimum tempering tem-
capable of meeting the impact requirements in Table 2 or of
perature shall be 850°F [455°C].
Supplementary Requirement S8, if so specified (see Supple-
5.3 Material that has been straightened after quenching and
mentary Requirement S4).
tempering shall be stress relieved by reheating to a temperature
9.2 Material in the quenched and tempered or quenched,
not lower than 100°F [55°C] under the tempering temperature.
tempered, and stress-relieved condition shall conform to the
6. Chemical Composition impact requirements in Table 2, or of Supplementary Require-
ment S8 if so specified.
6.1 The steel shall conform to the chemical requirements
9.3 The percent of shear (ductility or fibrous) fracture shall
prescribed in Table 1.
be computed. The computed value shall be recorded for all
7. Tensile Requirements
impact specimens.
9.4 The amount of lateral expansion shall be measured. The
7.1 Material furnished in the annealed condition shall be
measured value shall be recorded for all impact specimens.
capable of meeting the specified tensile properties for the class
as specified in Table 2 when heat treated in accordance with 5.2 9.5 The percent shear and the amount of lateral expansion
and 5.3 (see Supplementary Requirement S4). shall be reported for information purposes (see 16.1).
A
TABLE 1 Chemical Requirements
Identification B21 B22 B23 B24 B24V
$
Symbol
(Cr-Mo-V) (4142-H) (E-4340-H) (4340 Mod.) (4340V Mod.)
Grade
Chromium- Chromium- Chromium-Nickel- Chromium-Nickel- Chromium-Nickel-
Molybdenum- Molybdenum Molybdenum Molybdenum Molybdenum-
Vanadium Vanadium
Range, % Product Range, % Product Range, % Product Range, % Product Product
Variation, Variation, Variation, Variation, Variation,
Over or Over or Over or Over or Over or
B B B B B
Under, % Under, % Under, % Under, % Under, %
Carbon 0.36–0.44 0.02 0.39–0.46 0.02 0.37–0.44 0.02 0.37–0.44 0.02 0.37–0.44 0.02
Manganese 0.45–0.70 0.03 0.65–1.10 0.04 0.60–0.95 0.04 0.70–0.90 0.04 0.60–0.95 0.04
C C C C C
Phosphorus, max 0.025 0.005 0.025 0.005 0.025 0.005 0.025 0.005 0.025 0.005
C C C C C
Sulfur, max 0.025 0.005 0.025 0.005 0.025 0.005 0.025 0.005 0.025 0.005
D
Silicon 0.15–0.35 0.02 0.15–0.35 0.02 0.15–0.35 0.02 0.15–0.35 0.02 0.15–0.35 0.02
Chromium 0.80–1.15 0.05 0.75–1.20 0.05 0.65–0.95 0.05 0.70–0.95 0.05 0.60–0.95 0.05
Nickel . . . . . . . . . . . . 1.55–2.00 0.05 1.65–2.00 0.05 1.55–2.00 0.05
Molybdenum 0.50–0.65 0.03 0.15–0.25 0.02 0.20–0.30 0.02 0.30–0.40 0.02 0.40–0.60 0.03
Vanadium 0.25–0.35 0.03 . . . . . . . . . . . . . . . . . . 0.04–0.10 0.01
A
The intentional addition of Bi, Se, Te, and Pb is not permitted.
B
Unless otherwise specified, separate determinations may vary from the specified ranges, except that elements in any heat must not vary both above and below the
specified range.
C
Phosphorus and sulfur content is 0.04 % max when open-hearth steel is specified.
D
Silicon content is 0.35 % max if vacuum-carbon deoxidized.
A 540/A 540M – 00
TABLE 2 Mechanical Property Requirements
NOTE 1—The minimum average of 3 specimens shall not be less than 35 ft·lbf [47 J]. One specimen from a set of 3 may be less than 35 ft·lbf [47
J] but not less than 30 ft·lbf [41 J].
NOTE 2— The minimum average of 3 specimens shall not be less than 30 ft·lbf [41 J]. One specimen from a set of 3 may be less than 30 ft·lbf [41
J] but not less than 25 ft·lbf [34 J].
NOTE 3—The minimum average of 3 specimens shall not be less than 25 ft·lbf [34 J]. One specimen from a set of 3 may be less than 25 ft·lbf [34
J] but not less than 20 ft·lbf [27 J].
NOTE 4—No minimum values established. Tests shall be run for information only.
Grade Class Diameter Tensile Yield Elonga- Reduc- Surface Charpy
Strength, Strength, tion, tion of Brinell V-Notch
min 0.2 % min, % Area, Hardness +10°F
offset, min, % (−12.2°C)
min max
min
Inch-Pound Units
in. ksi ksi In 2 in.
B21 5 to 2, incl 120 105 15 50 241 285 Note 4
(Cr-Mo-V) over 2 to 6, incl 115 100 15 50 248 302 Note 4
over 6 to 8, incl 115 100 15 50 255 311 Note 4
4 to 3, incl 135 120 13 45 269 331 Note 4
over 3 to 6, incl 135 120 13 45 277 352 Note 4
3 to 3, incl 145 130 12 40 293 352 Note 4
over 3 to 6, incl 145 130 12 40 302 375 Note 4
2 to 4, incl 155 140 11 40 311 401 Note 4
1 to 4, incl 165 150 10 35 321 429 Note 4
B22 5 to 2, incl 120 105 15 50 248 293 Note 1
(4142-H) over 2 to 4, incl 115 100 15 50 255 302 Note 4
4 to 1, incl 135 120 13 45 269 341 Note 1
over 1 to 4, incl 135 120 13 45 277 363 Note 4
3 to 2, incl 145 130 12 40 293 363 Note 4
over 2 to 4, incl 145 130 12 40 302 375 Note 4
2 to 3, incl 155 140 11 40 311 401 Note 4
1to1 ⁄2 , incl 165 150 10 35 321 401 Note 4
B23 5 to 6, incl 120 105 15 50 248 311 Note 1
(E-4340-H) over 6 to 8, incl 115 100 15 50 255 321 Note 1
over8to9 ⁄2 , incl 115 100 15 50 262 321 Note 4
4 to 3, incl 135 120 13 45 269 341 Note 1
over 3 to 6, incl 135 120 13 45 277 352 Note 1
over6to9 ⁄2 , incl 135 120 13 45 285 363 Note 4
3 to 3, incl 145 130 12 40 293 363 Note 2
over 3 to 6, incl 145 130 12 40 302 375 Note 2
over6to9 ⁄2 , incl 145 130 12 40 311 388 Note 4
2 to 3, incl 155 140 11 40 311 388 Note 4
over 3 to 6, incl 155 140 11 40 311 401 Note 4
over6to9 ⁄2 , incl 155 140 11 40 321 415 Note 4
1 to 3, incl 165 150 10 35 321 415 Note 4
over 3 to 6, incl 165 150 10 35 331 429 Note 4
over 6 to 8, incl 165 150 10 35 341 444 Note 4
B24 5 to 6, incl 120 105 15 50 248 311 Note 1
(4340 Mod.) over 6 to 8, incl 115 100 15 50 255 321 Note 1
over8to9 ⁄2 , incl 115 100 15 50 262 321 Note 1
4 to 3, incl 135 120 13 45 269 341 Note 1
over 3 to 6, incl 135 120 13 45 277 352 Note 1
over 6 to 8, incl 135 120 13 45 285 363 Note 1
over8to9 ⁄2 , incl 135 120 13 45 293 363 Note 4
3 to 3, incl 145 130 12 40 293 363 Note 2
over 3 to 8, incl 145 130 12 40 302 388 Note 2
over8to9 ⁄2 , incl 145 130 12 40 311 388 Note 4
2 to 7, incl 155 140 11 40 311 401 Note 2
over7to9 ⁄2 , incl 155 140 11 40 321 415 Note 4
1 to 6, incl 165 150 10 35 321 415 Note 3
over 6 to 8, incl 165 150 10 35 331 429 Note 4
B24V 3 to 4, incl 145 130 12 40 293 363 Note 1
(4340V Mod.) over 4 to 8, incl 145 130 12 40 302 375 Note 2
over 8 to 11, incl 145 130 12 40 311 388 Note 3
2 to 4, incl 155 140 11 40 311 388 Note 2
over 4 to 8, incl 155 140 11 40 311 401 Note 3
over 8 to 11, incl 155 140 11 40 321 415 Note 4
A 540/A 540M – 00
TABLE 2 Continued
Grade Class Diameter Tensile Yield Elonga- Reduc- Surface Charpy
Strength, Strength, tion, tion of Brinell V-Notch
min 0.2 % min, % Area, Hardness +10°F
offset, min, % (−12.2°C)
min max
min
1 to 4, incl 165 150 10 35 321 415 Note 3
over 4 to 8, incl 165 150 10 35 331 429 Note 4
over 8 to 11, incl 165 150 10 35 331 444 Note 4
Metric Units
In 50
mm MPa MPa mm
B21 5 to 50.8, incl 827 724 15 50 241 285 Note 4
(Cr-Mo-V) over 50.8 to 152.4, incl 793 689 15 50 248 302 Note 4
over 152.4 to 203.2, incl 793 689 15 50 255 311 Note 4
4 to 76.2, incl 931 827 13 45 269 331 Note 4
over 76.2 to 152.4, incl 931 827 13 45 277 352 Note 4
3 to 76.2, incl 1000 896 12 40 293 352 Note 4
over 76.2 to 152.4, incl 1000 896 12 40 302 375 Note 4
2 to 101.6, incl 1069 965 11 40 311 401 Note 4
1 to 101.6, incl 1138 1034 10 35 321 429 Note 4
B22 5 to 50.8, incl 827 724 15 50 248 293 Note 1
(4142-H) over 50.8 to 101.6, incl 793 689 15 50 255 302 Note 4
4 to 25.4, incl 931 827 13 45 269 341 Note 1
over 25.4 to 101.6, incl 931 827 13 45 277 363 Note 4
3 to 50.8, incl 1000 896 12 40 293 363 Note 4
over 50.8 to 101.6, incl 1000 896 12 40 302 375 Note 4
2 to 76.2 incl 1069 965 11 40 311 401 Note 4
1 to 38.1, incl 1138 1034 10 35 321 401 Note 4
B23 5 to 152.4, incl 827 724 15 50 248 311 Note 1
(E-4340-H) over 152.4 to 203.2 incl 793 689 15 50 255 321 Note 1
over 203.2 to 241.3, incl 793 689 15 50 262 321 Note 4
4 to 76.2, incl 931 827 13 45 269 341 Note 1
over 76.2 to 152.4, incl 931 827 13 45 277 352 Note 1
over 152.4 to 241.3, incl 931 827 13 45 285 363 Note 4
3 to 76.2, incl 1000 896 12 40 293 363 Note 2
over 76.2 to 152.4, incl 1000 896 12 40 302 375 Note 2
over 152.4 to 241.3, incl 1000 896 12 40 311 388 Note 4
2 to 76.2, incl 1069 965 11 40 311 388 Note 2
over 76.2 to 152.4, incl 1069 965 11 40 311 401 Note 4
over 152.4 to 241.3, incl 1069 965 11 40 321 415 Note 4
1 to 76.2, incl 1138 1034 10 35 321 415 Note 4
over 76.2 to 152.4, incl 1138 1034 10 35 331 429 Note 4
over 152.4 to 203.2, incl 1138 1034 10 35 341 444 Note 4
B24 5 to 152.4, incl 827 724 15 50 248 311 Note 1
(4340 Mod.) over 152.4 to 203.2, incl 793 689 15 50 255 321 Note 1
over 203.2 to 241.3, incl 793 689 15 50 262 321 Note 1
4 to 76.2, incl 931 827 13 45 269 341 Note 1
over 76.2 to 152.4, incl 931 827 13 45 277 352 Note 1
over 152.4 to 203.2, incl 931 827 13 45 285 363 Note 1
over 203.2 to 241.3, incl 931 827 13 45 293 363 Note 4
3 to 76.2, incl 1000 896 12 40 293 363 Note 2
over 76.2 to 203.2, incl
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