ASTM B709-22

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Designation: B709 − 17 B709 − 22
Standard Specification for
Iron-Nickel-Chromium-Molybdenum Alloy (UNS N08028)
Plate, Sheet, and Strip
This standard is issued under the fixed designation B709; 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 Scope*
1.1 This specification covers iron-nickel-chromium-molybdenum alloy (UNS N08028) plate, sheet, and strip in the solution-
annealed solution annealed condition.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet
(SDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices,establish
appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 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.
2. Referenced Documents
2.1 ASTM Standards:
B880B899 Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt
Terminology Relating to Non-ferrous Metals and Alloys
B906 Specification for General Requirements for Flat-Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip
E8/E8M Test Methods for Tension Testing of Metallic Materials
3. Terminology
3.1 Definitions:
3.1.1 The terms and definitions of Terminology B899 apply.
4. Ordering Information
4.1 It is the responsibility of the purchaser to specify all requirements that are necessary for material ordered under this
specification. Examples of such requirements include, but are not limited to those specified in Ordering Information Section in
Specification B906.
This specification is under the jurisdiction of ASTM Committee B02 on Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee B02.07 on Refined
Nickel and Cobalt and Their Alloys.
Current edition approved April 1, 2017Oct. 1, 2022. Published April 2017October 2022. Originally approved in 1982. Last previous edition approved in 20142017 as
B709 – 04 (2014). 17. DOI: 10.1520/B0709-17.10.1520/B0709-22.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
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B709 − 22
5. General Requirements
5.1 Material furnished under this specification shall conform to the applicable requirements of the current edition of Specification
B906, unless otherwise specified herein.
6. Materials and Manufacture
6.1 Heat Treatment—The final heat treatment shall be a solution-anneal. solution anneal. Minor cold working such as flattening
or temper rolling may be performed after the final solution annealing treatment.
NOTE 1—This recommended solution-anneal solution anneal consists of heating to a minimum temperature of 1975°F (1080°C)1975 °F (1080 °C) and
cooling rapidly to room temperature.
7. Chemical Composition
7.1 The material sampled in accordance with 10.210.1 shall conform to the composition limits prescribed in Table 1.
7.2 If a product analysis is subsequently made, the made by the purchaser, the material shall conform to the composition limits
with the product analysis variation prescribedproduct (check) analysis requirements in Specification B880B906.
8. Mechanical Properties
8.1 The material shall conform to the requirements as to the mechanical property prescribed in Table 2.
9. Dimensions and Permissible Variations
9.1 Sheet—Material furnished under this specification shall conform to the applicable requirements of the current edition of
Specification B906, except as specified in Table 3 and Table 4.
9.2 Cold-Rolled Strip—Material furnished under this specification shall conform to the applicable requirements of the current
edition of Specification B906, except as specified in Tables 5-7.
9.3 Plate—Material furnished under this specification shall conform to the applicable requirements of the current edition of
Specification B906.
10. Sampling
10.1 Sampling for Chemical Analysis, Mechanical Testing, and Corrosion Testing shall be performed in accordance with
Specification B906, except as specified herein:
A
TABLE 1 Chemical Requirements
Element Composition, %
Ni 30.0 to 34.0
A
Fe remainder
B
Fe remainder
Cr 26.0 to 28.0
Mo 3.0 to 4.0
C, max 0.030
C 0.030
Si, max 1.00
Si 1.00
Mn, max 2.50
Mn 2.50
P, max 0.030
P 0.030
S, max 0.030
S 0.030
Cu 0.6 to 1.4
A
Maximum, unless range is indicated.
B
Determined arithmetically by difference.
B709 − 22
TABLE 2 Mechanical Property Requirements
Elongation
Yield in 2 in.
Tensile
Strength or Rockwell
Strength,
Form (0.2 % off-set), 50 mm, Hardness
min, ksi
A
min, or (or equivalent)
(MPa)
ksi (MPa) 4D, min,
%
Sheet 73 (500) 31 (214) 40 70–90 HRB
Strip 73 (500) 31 (214) 40 70–90 HRB
Plate 73 (500) 31 (214) 40 70–90 HRB
A
Hardness values are shown for information only and shall not constitute a basis for acceptance or rejection as long as the other mechanical properties are met.
TABLE 3 Flatness Tolerances for Hot-Rolled and Cold-Rolled Sheets
Sheets not Specified to Stretcher Leveled Standard of Flatness
Flatness Tolerance (max
Specified Thickness, in. (mm) Width, in. (mm) Deviation from a Horizontal
Flat Surface), in. (mm)
0.062 (1.57) and over to 60 (1524), incl ⁄2 (12.7)
over 60 to 72 (1524 to 1829), incl ⁄4 (19.1)
over 72 (1829) 1 (25.4)
Under 0.062 (1.57) to 36 (914), incl ⁄2 (12.7)
over 36 to 60 (914 to 1524), incl ⁄4 (19.1)
over 60 (1524) 1 (25.4)
TABLE 4 Weight Tolerances for Hot-Rolled and Cold-
Rolled Sheets
It is not practicable to produce hot-rolled and cold-rolled sheets to exact theoretical weight. Sheets of any one item of a specified thickness
and size in any finish may be overweight to the following extent:
(1) An item of five sheets or less, or an item estimated to weigh 200 lb (90.7 kg) or less, may actually weigh as much as 10 % over the
theoretical weight.
(2) An item of more than five sheets and estimated to weigh more than 200 lb (90.7 kg) may actually weigh as much as 7 ⁄2 % over the
theoretical weight.
(3) The underweight variations for sheets are limited by the under thickness tolerances shown in Table 3 of Specification B906.
(3) The underweight variations for sheets are limited by the under thickness tolerances shown in Specification B906.
2 2
For determining theoretical weight, the factor 42 lb/ft ·in. (0.0008 kg/cm ·mm) thickness may be used.
10.1.1 Plate—A lot of plate for testing and inspection purposes shall consist of the products resulting from the rolling of one heat
of material in the same condition and specified thickness, solution annealed by the same practice, but in no case more than 25 000
lb (11 340 kg).
10.1.2 Sheet and Strip—A lot of sheet or strip for testing and inspection purposes shall consist of material from one heat in the
same form (sheet or strip), condition, finish, and specified
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