ASTM A1082/A1082M-16(2021)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:A1082/A1082M −16 (Reapproved 2021)
Standard Specification for
High Strength Precipitation Hardening and Duplex Stainless
Steel Bolting for Special Purpose Applications
This standard is issued under the fixed designation A1082/A1082M; 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* ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
1.1 This specification covers high strength stainless steel
mendations issued by the World Trade Organization Technical
bolting materials and bolting components for special purpose
Barriers to Trade (TBT) Committee.
applications such as pressure vessels. Several grades of
precipitation-hardened and duplex (ferritic-austenitic) stainless
2. Referenced Documents
steels are covered. Selection will depend upon design, service
2.1 ASTM Standards:
conditions, mechanical properties and characteristics related to
the application. A276/A276M Specification for Stainless Steel Bars and
Shapes
1.2 The following referenced general requirements are in-
A370 Test Methods and Definitions for Mechanical Testing
dispensable for application of this specification: Specification
of Steel Products
A962/A962M.
A479/A479M Specification for Stainless Steel Bars and
1.3 Supplementary Requirements are provided for use at the
Shapes for Use in Boilers and Other Pressure Vessels
option of the purchaser. The Supplementary Requirements
A564/A564M Specification for Hot-Rolled and Cold-
shall only apply when specified individually by the purchaser
Finished Age-Hardening Stainless Steel Bars and Shapes
in the purchase order or contract.
A959/A959M Guide for Specifying Harmonized Standard
Grade Compositions for Wrought Stainless Steels
1.4 This specification is expressed in both inch-pound units
A962/A962M Specification for Common Requirements for
and in SI units; however, unless the purchase order or contract
Bolting Intended for Use at Any Temperature from Cryo-
specifies the applicable “M” specification designation (SI
genic to the Creep Range
units), the inch-pound units shall apply.
2.2 ASNT Documents:
1.5 The values stated in either SI units or inch-pound units
ASNT SNT-TC-1A Recommended Practice for Personnel
are to be regarded separately as standard. Within the text, the
Qualification and Certification in Nondestructive Testing
SI units are shown in brackets. The values stated in each
system may not be exact equivalents; therefore, each system
3. Ordering Information
shall be used independently of the other. Combining values
from the two systems may result in non-conformance with the
3.1 The inquiry and order shall indicate the following, as
standard.
required, to describe the desired material adequately:
3.1.1 Quantity (weight or number of pieces),
1.6 This standard does not purport to address all of the
3.1.2 Description of item (bars, bolts, nuts, etc.),
safety concerns, if any, associated with its use. It is the
3.1.3 UNS Designation or Type (see Table 1),
responsibility of the user of this standard to establish appro-
3.1.4 Heat-Treat Condition (see 7.1.1),
priate safety, health, and environmental practices and deter-
3.1.5 Dimension/Threads, etc. (see the section in Specifica-
mine the applicability of regulatory limitations prior to use.
tion A962/A962M titled “Workmanship, Finish, and
1.7 This international standard was developed in accor-
Appearance”), and
dance with internationally recognized principles on standard-
3.1.6 Supplementary Requirements, if any.
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee For referenced ASTM standards, visit the ASTM website, www.astm.org, or
A01.22 on Steel Forgings and Wrought Fittings for PipingApplications and Bolting contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Materials for Piping and Special Purpose Applications. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Sept. 1, 2021. Published October 2021. Originally the ASTM website.
approved in 2012. Last previous edition approved in 2016 as A1082/A1082M – 16. AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
DOI: 10.1520/A1082/A1082M-16R21. 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
*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
A1082/A1082M−16 (2021)
A
TABLE 1 Chemical Requirements
UNS
B
Type Carbon Manganese Phosphorus Sulfur Silicon Chromium Nickel Molybdenum Nitrogen Other Elements
B
Designation
Duplex (Ferritic-Austenitic) Grades
S31100 { 0.06 1.00 0.045 0.030 1.00 25.0-27.0 6.0-7.0{{ Ti 0.25
S31260 { 0.030 1.00 0.030 0.030 0.75 24.0-26.0 5.5-7.5 2.5-3.5 0.10-0.30 Cu 0.20-0.80,
W 0.10-0.50
S31803 { 0.030 2.00 0.030 0.020 1.00 21.0-23.0 4.5-6.5 2.5-3.5 0.08-0.20 {
S32101 { 0.040 4.0-6.0 0.040 0.030 1.00 21.0-22.0 1.35-1.70 0.10-0.80 0.20-0.25 Cu 0.10-0.80
S32202 { 0.030 2.00 0.040 0.010 1.00 21.5-24.0 1.0-2.80 0.45 0.18-0.26 {
S32205 2205 0.030 2.00 0.030 0.020 1.00 22.0-23.0 4.5-6.5 3.0-3.5 0.14-0.20
S32304 2304 0.030 2.50 0.040 0.030 1.00 21.5-24.5 3.0-5.5 0.05-0.60 0.05-0.20 Cu 0.05-0.60
S32506 { 0.030 1.00 0.040 0.015 0.90 24.0-26.0 5.5-7.2 3.0-3.5 0.08-2.0 W 0.05-0.30
S32550 255 0.040 1.50 0.040 0.030 1.00 24.0-27.0 4.5-6.5 2.9-3.9 0.10-0.25 Cu 1.50-2.50
S32750 2507 0.030 1.20 0.035 0.020 0.80 24.0-26.0 6.0-8.0 3.0-5.0 0.24-0.32 Cu 0.50
S32760 { 0.030 1.00 0.030 0.010 1.00 24.0-26.0 6.0-8.0 3.0-4.0 0.20-0.30 Cu 0.50-1.00,
W 0.50-1.00,
%Cr+3.3x%Mo
+16x%N$40
S32906 { 0.030 0.80-1.50 0.030 0.030 0.50 28.0-30.0 5.8-7.5 1.50-2.60 0.30-0.40 Cu 0.80
S32950 { 0.030 2.00 0.035 0.010 0.60 26.0-29.0 3.5-5.2 1.00-2.50 0.15-0.35
S39277 { 0.025 0.80 0.025 0.002 0.80 24.0-26.0 6.5-8.0 3.0-4.0 0.23-.033 Cu 1.20-2.00,
W 0.80-1.20
Precipitation Hardening Grades
S15700 632 0.09 1.00 0.040 0.030 1.00 14.0-16.0 6.5-7.7 2.00-3.00 { Al 0.75-1.50
S17400 630 0.07 1.00 0.040 0.030 1.00 15.0-17.0 3.0-5.0{{ Cu 3.0-5.0,
Cb +Ta 0.15-0.45
S17600 635 0.08 1.00 0.040 0.030 1.00 16.0-17.5 6.0-7.5{{ Al 0.40,
Ti 0.40-1.20
S17700 631 0.09 1.00 0.040 0.030 1.00 16.0-18.0 6.5-7.7{{ Al 0.75-1.50
S35500 634 0.10-0.15 0.50-1.25 0.040 0.030 0.50 15.0-16.0 4.0-5.0 2.5-3.2 0.07-0.13 Cb 0.10-0.50
A
Maximum or range unless otherwise indicated.
B
See Guide A959/A959M.
A
TABLE 2 Solution Treatment and Mechanical Property Requirements for PH Grades
Mechanical Property Requirements in the Solution Treated Condition
Elongation
D
Solution Hardness
UNS
Tensile in 2” Reduction
B,C
Type Treatment
Yield Strength
Designation
Strength [50 mm] of Area,
°F [°C]
ksi [MPa] Rockwell, Brinell,
ksi [MPa] or 4D, min. %
maximum maximum
min. %
S15700 632 {{{{{ 100 HRB 269
S17400 630 Cool to below {{{{ 38 HRC 363
90 [32]
S17600 635 Air Cool 120 [825] 75 [515] 10 45 32 HRC 302
S17700 631 {{{{{ 98 HRB 229
S35500 634 Hold at# -100 {{{{{ 363
[-73] for at
least 3 hours
A
Values shown are minimums or ranges unless maximum is indicated.
B
1900 [1040] ± 25°F [15°C].
C
Quenched in water unless the table specifies another media.
D
Either Rockwell or Brinell testing is permitted unless thickness is below ⁄2 ” in which case Rockwell is preferred.
4. Common Requirements 5. Materials and Manufacture
4.1 Bolting materials and components supplied to this
5.1 Bars shall be produced in accordance with Specifica-
specificationshallconformtotherequirementsofSpecification
tions A276/A276M, A479/A479M or A564/A564M as appli-
A962/A962M. These requirements include test methods,
cable. Finish (hot or cold, ground, rough turned, drawn, etc.)
finish, thread dimensions, marking, terminology, testing,
shall be at the option of the manufacturer unless otherwise
certification, optional supplementary requirements, and others.
specified in the purchase order or contract.
Failure to comply with the requirements of Specification
A962/A962M constitutes nonconformance with this specifica- 5.2 Bolting components shall be produced in accordance
tion. In case of conflict between the requirements of this with this specification and the requirements of Specification
specificationandSpecificationA962/A962M,thisspecification
A962/A962M.
shall prevail.
A1082/A1082M−16 (2021)
6. Chemical Composition 8.2 Age hardened bolting material shall be capable of
meeting the requirements prescribed in Table 3. Impact testing
6.1 Each alloy shall conform to the chemical composition
is required when S1 is invoked in the purchase order or
requirements prescribed in Table 1.
contract.
8.3 Number of Tests:
7. Heat Treatment
8.3.1 Bolting Material—See 8.4 for hardness testing of bar.
7.1 Precipitation Hardening (PH) Stainless Steels:
See the section in Specification A962/A962M titled “Number
7.1.1 Bolting materials ordered to a Type or UNS designa-
of Tests” for all other tests except those covered in 8.3.2.
tion only shall be furnished in the solution treated condition in
8.3.2 Full Size Bolting Components—Headed bolts with a
accordance with Table 2 or Table 3. Age hardened bolting
1 ⁄2 in. [37 mm] body diameter and smaller, with a body length
materials ordered to both a Type and Condition shall meet the
three times the diameter or longer and a required maximum
requirements of Table 3.
tensile load of 160 000 lb/f [705 kN], produced by upsetting or
7.2 Duplex (Ferritic-Austenitic) Stainless Steels:
forging (hot or cold) shall be subjected to full size testing. The
7.2.1 Duplex Stainless (Ferritic-Austenitic) Steels shall be
testing shall be in addition to the tensile testing specified in
furnished in the solution-annealed condition as noted in Table
8.3.1. The lot size shall be as shown in Specification A962/
4.
A962M (see the section titled Number of Tests). Failure shall
occur in the body or threaded section with no failure, or
8. Mechanical Properties indicationsoffailure,suchascracks,atthejunctionofthehead
and shank. Wedge tensile testing is not required for flat
8.1 Samples taken from product (see the section in Speci-
countersunk head or socket button products.
fication A962/A962M titled “Mechanical Properties”) shall
conform to the mechanical properties of Tables 2-4. 8.4 Hardness Test:
A
TABLE 3 Age Hardening Heat Treatm
...