ASTM B805-23

Standard Specification for Precipitation Hardening Nickel Alloys Bar and Wire

ABSTRACT
This specification covers UNS N07716, N07725, N07773, N07776, N09777, and N09925 nickel alloy hot or cold finished rounds, squares, hexagons, rectangles, and cold finished wires. Bars should be supplied in solution treated conditions while wires should be in both solution-treated and cold-finished conditions. The recommended solution treatment should consist of heating the material to a certain temperature followed by rapid cooling. Solution-treated materials should at least conform to the minimum room temperature mechanical properties and should be suitable for subsequent age hardening.
SCOPE
1.1 This specification covers nickel alloys UNS N07716, N07725, N07773, N07776, N09777, and N09925 in the form of hot or cold finished rounds, squares, hexagons, rectangles, and cold finished wire.  
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 The following precautionary caveat pertains only to the test methods, portion, Section 13, of this specification: 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, 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.

General Information

• Status: Published
• Publication Date: 31-Mar-2023
• ICS: 77.150.40 - Nickel and chromium products
• Technical Committee: B02 - Nonferrous Metals and Alloys
• Drafting Committee: B02.07 - Refined Nickel and Cobalt and Their Alloys

Relations

• Refers: ASTM E8/E8M-24 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Jan-2024
• Refers: ASTM B899-16 - Standard Terminology Relating to Non-ferrous Metals and Alloys
• Effective Date: 01-Oct-2016
• Refers: ASTM E8/E8M-16 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 15-Jul-2016
• Refers: ASTM B899-15 - Standard Terminology Relating to Non-ferrous Metals and Alloys
• Effective Date: 01-Oct-2015
• Refers: ASTM E8/E8M-15 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Feb-2015
• Refers: ASTM B899-14 - Standard Terminology Relating to Non-ferrous Metals and Alloys
• Effective Date: 01-Oct-2014
• Refers: ASTM E8/E8M-13 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Jun-2013
• Refers: ASTM B899-13 - Standard Terminology Relating to Non-ferrous Metals and Alloys
• Effective Date: 01-Feb-2013
• Refers: ASTM E8/E8M-11 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Dec-2011
• Refers: ASTM B899-09 - Standard Terminology Relating to Non-ferrous Metals and Alloys
• Effective Date: 01-Oct-2009
• Refers: ASTM B899-09e1 - Standard Terminology Relating to Non-ferrous Metals and Alloys
• Effective Date: 01-Oct-2009
• Refers: ASTM E29-08 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 01-Oct-2008
• Refers: ASTM B880-03(2008) - Standard Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt Alloys
• Effective Date: 01-Mar-2008
• Refers: ASTM B899-06 - Standard Terminology Relating to Non-ferrous Metals and Alloys
• Effective Date: 01-Dec-2006
• Refers: ASTM E29-06b - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 15-Nov-2006

Overview

ASTM B805-23 is the standard specification developed by ASTM International for precipitation hardening nickel alloys in the form of bars and wires. This standard details the requirements for nickel alloy products-namely UNS N07716, N07725, N07773, N07776, N09777, and N09925-produced as hot or cold finished rounds, squares, hexagons, rectangles, and cold-finished wires. The specification outlines the forms, conditions, mechanical properties, chemical composition, and dimensional tolerances that ensure quality, performance, and consistency for these high-performance materials in demanding environments.

Key Topics

Material Forms Covered:

• Hot or cold finished bars: rounds, squares, hexagons, rectangles
• Cold finished wires

Product Conditions:

• Bars supplied in solution-treated condition
• Wires provided both solution-treated and cold-finished

Mechanical and Chemical Requirements:

• Products must meet minimum room temperature mechanical properties after solution treatment
• Chemical compositions must meet defined ranges and limits for elements such as nickel, chromium, molybdenum, niobium, titanium, and iron

Heat Treatment Guidance:

• Solution treatment consists of heating to a specified range followed by rapid cooling
• Solution-treated materials are suitable for subsequent age hardening

Testing and Inspection:

• Mechanical properties verified through tension tests
• Chemical composition analysis as per referenced ASTM standards
• Dimensional and straightness tolerances set out for each product form

Product Identification and Certification:

• Detailed marking and certification requirements to ensure traceability

Applications

ASTM B805-23-compliant precipitation hardening nickel alloys are used across a range of applications where high strength, corrosion resistance, and performance at elevated temperatures are critical. Key sectors and uses include:

• Aerospace and Defense: Engine components, fasteners, and structural bars requiring high mechanical strength and resistance to oxidation
• Oil & Gas: Downhole and subsea equipment exposed to aggressive corrosive environments, such as valves, shafts, and tubing
• Chemical Processing: Equipment such as reactors and fittings that must withstand high temperature and corrosive chemicals
• Power Generation: Turbine blades, springs, and fasteners in high-temperature, high-stress environments
• General Engineering: Precision wire applications and components where dimensional stability and high tensile strength are vital

The rigorous requirements for solution treatment and age hardening make these alloys particularly valuable in critical service environments that demand both durability and corrosion resistance.

Related Standards

Several other ASTM standards are referenced within ASTM B805-23 to support chemical analysis, tension testing, and terminology:

• ASTM B880 - General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys, and Cobalt Alloys
• ASTM B899 - Terminology Relating to Non-ferrous Metals and Alloys
• ASTM E8/E8M - Test Methods for Tension Testing of Metallic Materials
• ASTM E29 - Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• ASTM E1473 - Test Methods for Chemical Analysis of Nickel, Cobalt, and High-Temperature Alloys

Practical Value

Conforming to ASTM B805-23 ensures the reliability and consistency of precipitation hardening nickel alloy bars and wires in safety-critical and performance-intensive industries. By adhering to this international standard, manufacturers and end users achieve:

• Enhanced material traceability and documentation
• Assurance of mechanical and corrosion-resistant properties suitable for demanding environments
• Standardized methods for quality control, inspection, and certification
• Compatibility with global procurement processes thanks to international standardization principles

For organizations operating in sectors where performance and compliance are essential, ASTM B805-23 is an invaluable resource for material selection and specification.

Standards Content (Sample)

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: B805 − 23
Standard Specification for
Precipitation Hardening Nickel Alloys Bar and Wire
This standard is issued under the fixed designation B805; 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* E8/E8M Test Methods for Tension Testing of Metallic Ma-
terials
1.1 This specification covers nickel alloys UNS N07716,
E29 Practice for Using Significant Digits in Test Data to
N07725, N07773, N07776, N09777, and N09925 in the form
Determine Conformance with Specifications
of hot or cold finished rounds, squares, hexagons, rectangles,
E1473 Test Methods for Chemical Analysis of Nickel,
and cold finished wire.
Cobalt, and High-Temperature Alloys
1.2 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
3. Terminology
conversions to SI units that are provided for information only
3.1 Definitions—Definitions for terms defined in Terminol-
and are not considered standard.
ogy B899 shall apply unless otherwise defined by the require-
1.3 The following precautionary caveat pertains only to the
ments of this document.
test methods, portion, Section 13, of this specification: This
3.2 Definitions of Terms Specific to This Standard:
standard does not purport to address all of the safety concerns,
3.2.1 bar, n—material of round, rectangular (flats),
if any, associated with its use. It is the responsibility of the user
hexagonal, square, or other solid section up to and including
of this standard to become familiar with all hazards including
10 in. (254 mm) in width and ⁄8 in. (3.2 mm) or over in
those identified in the appropriate Safety Data Sheet (SDS) for
thickness in straight lengths.
this product/material as provided by the manufacturer, to
establish appropriate safety, health, and environmental prac- 3.2.2 wire, n—a cold-worked solid product of uniform cross
tices and determine the applicability of regulatory limitations
section along its whole length, usually supplied in coil form.
prior to use.
1.4 This international standard was developed in accor-
4. Ordering Information
dance with internationally recognized principles on standard-
4.1 It is the responsibility of the purchaser to specify all
ization established in the Decision on Principles for the
requirements that are necessary for material ordered under this
Development of International Standards, Guides and Recom-
specification. Examples of such requirements include, but are
mendations issued by the World Trade Organization Technical
not limited to the following:
Barriers to Trade (TBT) Committee.
4.1.1 Alloy name or UNS number,
4.1.2 ASTM designation and date of issue,
2. Referenced Documents
4.1.3 Quantity,
2.1 ASTM Standards:
4.1.4 Form (bar or wire),
B880 Specification for General Requirements for Chemical
4.1.5 Dimensions,
Check Analysis Limits for Nickel, Nickel Alloys and
4.1.6 Condition,
Cobalt Alloys
4.1.7 Finish,
B899 Terminology Relating to Non-ferrous Metals and Al-
4.1.8 Certification—State if certification is required,
loys
4.1.9 Samples for Product Analysis—State if samples for
product analysis are to be furnished, and
4.1.10 Purchaser Inspection—State if purchaser inspection
This specification is under the jurisdiction of ASTM Committee B02 on
is required and which tests or inspections are to be witnessed.
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, 2023. Published May 2023. Originally 5. Chemical Composition
ɛ1
approved in 1990. Last previous edition approved in 2017 as B805 – 06 (2017) .
5.1 The material shall conform to the composition limits
DOI: 10.1520/B0805-23.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or specified in Table 1.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.2 If a product (check) analysis is performed, the material
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. shall conform to the tolerances provided in Specification B880.
*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
B805 − 23
A
TABLE 1 Chemical Requirements
Composition, Weight %
Element
Alloy N07716 Alloy N07725 Alloy N07773 Alloy N07776 Alloy N09777 Alloy N09925
Carbon 0.03 0.03 0.03 0.03 0.03 0.03
Manganese 0.20 0.35 1.00 1.00 1.00 1.0
Phosphorous 0.015 0.015 0.030 0.030 0.030 0.03
Sulfur 0.010 0.010 0.010 0.010 0.010 0.03
Silicon 0.20 0.20 0.50 0.50 0.50 0.5
Chromium 19.00–22.00 19.00–22.50 18.0–27.0 12.0–22.0 14.0–19.0 19.5–22.5
Nickel 59.00–63.00 55.00–59.00 45.0–60.0 50.0–60.0 34.0–42.0 42.0–46.0
Molybdenum 7.00–9.50 7.00–9.50 2.5–5.5 9.0–15.0 2.5–5.5 2.5–3.5
C
Niobium 2.75–4.00 2.75–4.00 2.5–6.0 4.0–6.0 0.10 0.5
Titanium 1.00–1.60 1.00–1.70 2.0 1.00 2.0–3.0 1.9–2.40
Aluminum 0.35 0.35 2.0 2.00 0.35 0.1–0.5
B B B B B D
Iron rem rem rem rem rem 22.0
Other . . Mo + 0.5 W = 2.5–5.5 . . Cu 1.5–3.0
Tungsten . . 6.0 0.5–2.5 . .
A
All values are maximums unless a range is provided or is a minimum.
B
Iron or nickel shall be determined arithmetically by difference, “rem” means remainder.
C
Columbium and Niobium are interchangeable names for the same element and both names are acceptable for use in B02.07 specifications.
D
Minimum.
A
TABLE 3 Capability Mechanical Properties
Tensile Yield Strength, Elongation Reduction
6. Condition
Alloy Strength, min min in 4D, of Area,
ksi MPa ksi MPa % min % min
6.1 Bar shall be supplied in the solution treated conditions.
N07716 and N07725 165 1137 120 827 20 35
N07773 and N07776 140 965 120 827 20 30
NOTE 1—The recommended solution treatment shall consist of heating
N09777 125 862 110 758 25 35
the material to temperature in the range from 1850 °F to 1950 °F (1010 °C
B
N09925 140 965 105 724 18 25
to 1065 °C), followed by rapid cooling. For alloy N09925, the recom-
C
N09925 140 965 110 758 18 25
mended solution treatment shall consist of heating the material to
A
Properties after aging solution treated material.
temperature of 1875 °F (1024 °C), followed by air cooling or faster for 1
Aging treatment for UNS N07716 and N07725 consists of 1350 °F (732 °C) for
in. (25.4 mm) diameter or less and water quenching or faster for greater
8 h followed by furnace cooling to 1150 °F to 1200 °F (621 °C to 649 °C), holding
than 1 in. (25.4 mm) diameter. For alloy N07725, the recommended
8 h, and air cooling. See Note 2.
solution treatment shall consist of heating the material to temperature of
Aging treatment for UNS N07773 consists of 1275 °F (690 °C) for 20 h followed
1900 °F (1038 °C), followed by air cooling.
by air cooling (see Note 2).
Aging treatment for UNS N07776 consists of 1335 °F (725 °C) for 8 h followed
6.2 Wire shall be supplied in the solution treated and cold
by furnace cooling to 1155 °F (625 °C), holding 8 h, and air cooling (see Note 2).
finished condition.
Aging treatment for UNS N09777 consists of 1330 °F (720 °C) for 8 h followed
by furnace cooling to 1150 °F (620 °C), holding 8 h, and air cooling (see Note 2).
6.3 Upon agreement between the purchaser and the
Aging treatment for UNS N09925 consists of 1365 °F (740 °C), hold at tempera-
manufacturer, the material may be supplied in the as-hot
ture for 6 h to 9 h, furnace cool to 1150 °F (62 °C), hold until total precipitation heat
treatment time has reached 18 h, air cool or faster.
worked, solution treated plus aged, or other conditions.
B
Cold worked, solution annealed and aged.
C
Hot worked, solution annealed and aged.
7. Mechanical Properties
7.1 Unless otherwise specified, the material shall be sup-
plied in the solution treated condition, suitable for subsequent
age hardening, and shall conform to the minimum room
shall be those shown in Table 3, or as agreed upon between the
temperature mechanical properties shown in Table 2.
purchaser and the manufacturer as part of the purchase
7.2 The solution treated material shall be capable of meeting
contract.
the mechanical property requirements of Table 3 following the
NOTE 2—An aging treatment other than that described in Table 3 may
precipitation hardening aging treatment described in Table 3.
be used provided the mechanical property and other requirements of this
7.3 When the material is to be supplied in the solution
specification or the governing purchase contract are met.
treated plus aged condition, mechanical property requirements
8. Dimensions and Permissible Variations
8.1 Bar—Bar shall conform to the variations in dimensions
A
TABLE 2 Solution Treated Mechanical Properties prescribed in Tables 4-12, inclusive, as applicable.
Tensile Strength, Yield Strength, Elongation Reduction
8.2 Wire—Wire shall conform to the variations in dimen-
Alloy min min in 4D, of Area,
sions prescribed in Tables 13-17, inclusive, as applicable.
ksi MPa ksi MPa % min % min
N07716 and 110 758 45 310 30 40
N07725
9. Workmanship, Finish, and Appearance
N07773 and 90 621 35 241 35 50
N07776
9.1 The product shall be uniform in quality and condition,
N09777 75 517 30 207 35 50
smooth, commercially straight or flat, and free from injurious
N09925 75 517 35 241 35 50
imperfections.
B805 − 23
TABLE 4 Permissible Variations in Size of Hot-Rolled Round and Square Bars
A
Permissible Variations from Specified Size, in. (mm) Out-of-Round or
B
Out-of-Square, in. (mm)
Over Under
C,D E E E
1 5
⁄4 (6.35) to ⁄16 (7.94), incl
C,D
5 7
Over ⁄16 (7.94) to ⁄16 (11.11), incl 0.006 (0.15) 0.006 (0.15) 0.009 (0.23)
C,D
7 5
Over ⁄16 (11.11) to ⁄8 (15.88), incl 0.007 (0.18) 0.007 (0.18) 0.010 (0.25)
5 7
Over ⁄8 (15.88) to ⁄8 (22.22), incl 0.008 (0.20) 0.008 (0.20) 0.012 (0.30)
Over ⁄8 (22.22) to 1 (25.40), incl 0.009 (0.23) 0.009 (0.23) 0.013 (0.33)
Over 1 (25.40) to 1 ⁄8 (28.58), incl 0.010 (0.25) 0.010 (0.25) 0.015 (0.38)
1 1
Over 1 ⁄8 (28.58) to 1 ⁄4 (31.75), incl 0.011 (0.28) 0.011 (0.28) 0.016 (0.41)
1 3
Over 1 ⁄4 (31.75) to 1 ⁄8 (34.92), incl 0.012 (0.30) 0.012 (0.30) 0.018 (0.46)
3 1
Over 1 ⁄8 (34.92) to 1 ⁄2 (38.10), incl 0.014 (0.36) 0.014 (0.36) 0.021 (0.53)
1 1 1
Over 1 ⁄2 (38.10) to 2 (50.80), incl ⁄64 (0.40) ⁄64 (0.40) 0.023 (0.58)
1 1
Over 2 (50.80) to 2 ⁄2 (63.50), incl ⁄32 (0.79) 0 0.023 (0.58)
1 1 3
Over 2 ⁄2 (63.50) to 3 ⁄2 (88.90), incl ⁄64 (1.19) 0 0.035 (0.89)
1 1 1
Over 3 ⁄2 (88.90) to 4 ⁄2 (114.30), incl ⁄16 (1.59) 0 0.046 (1.17)
1 1 5
Over 4 ⁄2 (114.30) to 5 ⁄2 (139.70), incl ⁄64 (1.98) 0 0.058 (1.47)
1 1 1
Over 5 ⁄2 (139.70) to 6 ⁄2 (165.10), incl ⁄8 (3.18) 0 0.070 (1.78)
1 5
Over 6 ⁄2 (165.10) to 8 (203.20), incl ⁄32 (3.97) 0 0.085 (2.18)
A
Out-of-round is the difference between the maximum and minimum diameters of the bar, measured at the same cross section.
B
Out-of-square section is the difference in the two dimensions at the same cross section of a square bar, each dimension being the distance between opposite faces.
C
1 5
Size tolerances have not been evolved for rounds in the size range of ⁄4 in. to ⁄16 in. (6.35 mm to 7.94 mm), inclusive. Size tolerances have not been evolved for round
1 5
sections in the size range of ⁄4 in. to approximately ⁄8 in. (6.35 mm to 15.88 mm) in diameter which are produced on rod mills in coils.
D
Variations in size of coiled product made on rod mills are greater than size tolerances for product made on bar mills.
E
Squares in this size are not produced as hot-rolled products.
TABLE 5 Permissible Variations in Size of Hot-Rolled Hexagonal and Octagonal Bars
Specified Sizes Measured Permissible Variations from Specified Size, in. (mm) Maximum Difference in
Between Opposite Sides, 3 Measurements for Hexagons
Over Under
in. (mm) only, in. (mm)
1 1
⁄4 (6.35) to ⁄2 (12.70), incl 0.007 (0.18) 0.007 (0.18) 0.011 (0.28)
Over ⁄2 (12.70) to 1 (25.40), incl 0.010 (0.25) 0.010 (0.25) 0.015 (0.38)
Over 1 (25.40) to 1 ⁄2 (38.10), incl 0.021 (0.53) 0.021 (0.53) 0.025 (0.64)
1 1 1 1
Over 1 ⁄2 (38.10) to 2 (50.80), incl ⁄32 (0.79) ⁄32 (0.79) ⁄32 (0.79)
1 3 3 3
Over 2 (50.80) to 2 ⁄2 (63.50), incl ⁄64 (1.19) ⁄64 (1.19) ⁄64 (1.19)
1 1 1 1 1
Over 2 ⁄2 (63.50) to 3 ⁄2 (88.90), incl ⁄16 (1.59) ⁄16 (1.59) ⁄16 (1.59)
TABLE 6 Permissible Variations in Thickness and Width for Hot-Rolled Flat Bars
Permissible Variations in Thickness for Thicknesses Given, in. (mm)
1 1 1
Specified Width, in. (mm) ⁄8 (3.18) to ⁄2 (12.70), incl Over ⁄2 (12.70) to 1 (25.40), incl Over 1 (25.40) to 2 (50.80), incl
Over Under Over Under Over Under
To 1 (25.40), incl 0.008 (0.20) 0.008 (0.20) 0.010 (0.25) 0.010 (0.25) . .
Over 1 (25.40) to 2 (50.80), incl 0.012 (0.30) 0.012 (0.30) 0.015 (0.38) 0.015 (0.38) 0.031 (0.79) 0.031 (0.79)
Over 2 (50.80) to 4 (101.60), incl 0.015 (0.38) 0.015 (0.38) 0.020 (0.51) 0.020 (0.51) 0.031 (0.79) 0.031 (0.79)
Over 4 (101.60) to 6 (152.40), incl 0.015 (0.38) 0.015 (0.38) 0.020 (0.51) 0.020 (0.51) 0.031 (0.79) 0.031 (0.79)
Over 6 (152.40) to 8 (203.20), incl 0.016 (0.41) 0.016 (0.41) 0.025 (0.64) 0.025 (0.64) 0.031 (0.79) 0.031 (0.79)
Over 8 (203.20) to 10 (254.00), incl 0.021 (0.53) 0.021 (0.53) 0.031 (0.79) 0.031 (0.79) 0.031 (0.79) 0.031 (0.79)
Over 2 (50.80) to 4 (101.60), incl Over 4 (101.60
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM 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.
´1
Designation: B805 − 06 (Reapproved 2017) B805 − 23
Standard Specification for
Precipitation Hardening Nickel Alloys Bar and Wire
This standard is issued under the fixed designation B805; 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.
ε NOTE—Editorial changes were made throughout in April 2017.
1. Scope*
1.1 This specification covers nickel alloys UNS N07716, N07725, N07773, N07776, N09777, and N09925 in the form of hot or
cold finished rounds, squares, hexagons, rectangles, and cold finished wire.
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 The following precautionary caveat pertains only to the test methods, portion, Section 13, of this specification: 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,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:
B880 Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt Alloys
B899 Terminology Relating to Non-ferrous Metals and Alloys
E8/E8M Test Methods for Tension Testing of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E1473 Test Methods for Chemical Analysis of Nickel, Cobalt, and High-Temperature Alloys
3. Terminology
3.1 Definitions—Definitions for terms defined in Terminology B899 shall apply unless otherwise defined by the requirements of
this document.
3.2 Definitions of Terms Specific to This Standard:
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, 2017April 1, 2023. Published April 2017May 2023. Originally approved in 1990. Last previous edition approved in 20112017 as
ɛ1
B805 – 06 (2011).(2017) . DOI: 10.1520/B0805-06R17E01.10.1520/B0805-23.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. 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
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B805 − 23
3.2.1 bar, n—material of round, rectangular (flats), hexagonal, square, or other solid section up to and including 10 in. (254 mm)
10 in. (254 mm) in width and ⁄8 in. (3.2 mm) or over in thickness in straight lengths.
3.2.2 wire, n—a cold-worked solid product of uniform cross section along its whole length, usually supplied in coil form.
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 the following:
4.1.1 Alloy name or UNS number,
4.1.2 ASTM designation and date of issue,
4.1.3 Quantity,
4.1.4 Form (bar or wire),
4.1.5 Dimensions,
4.1.6 Condition,
4.1.7 Finish,
4.1.8 Certification—State if certification is required,
4.1.9 Samples for Product Analysis—State if samples for product analysis are to be furnished, and
4.1.10 Purchaser Inspection—State if purchaser inspection is required and which tests or inspections are to be witnessed.
5. Chemical Composition
5.1 The material shall conform to the composition limits specified in Table 1.
5.2 If a product (check) analysis is performed, the material shall conform to the tolerances provided in Specification B880.
6. Condition
6.1 Bar shall be supplied in the solution treated conditions.
NOTE 1—The recommended solution treatment shall consist of heating the material to temperature in the range from 1850 to 1950°F (1010 to
1065°C),1850 °F to 1950 °F (1010 °C to 1065 °C), followed by rapid cooling. For alloy N09925, the recommended solution treatment shall consist of
heating the material to temperature of 1875°F (1024°C),1875 °F (1024 °C), followed by air cooling or faster for 1 in. (25.4 mm) (25.4 mm) diameter or
less and water quenching or faster for greater than 1 in. (25.4 mm) diameter. For alloy N07725, the recommended solution treatment shall consist of
heating the material to temperature of 1900°F (1038°C),1900 °F (1038 °C), followed by air cooling.
6.2 Wire shall be supplied in the solution treated and cold finished condition.
6.3 Upon agreement between the purchaser and the manufacturer, the material may be supplied in the as-hot worked, solution
treated plus aged, or other conditions.
7. Mechanical Properties
7.1 Unless otherwise specified, the material shall be supplied in the solution treated condition, suitable for subsequent age
hardening, and shall conform to the minimum room temperature mechanical properties shown in Table 2.
B805 − 23
A
TABLE 1 Chemical Requirements
Composition, Weight %
Element
Alloy N07716 Alloy N07725 Alloy N07773 Alloy N07776 Alloy N09777 Alloy N09925
Carbon 0.03 max 0.03 max 0.03 max 0.03 max 0.03 max 0.03 max
Carbon 0.03 0.03 0.03 0.03 0.03 0.03
Manganese 0.20 max 0.35 max 1.00 max 1.00 max 1.00 max 1.0 max
Manganese 0.20 0.35 1.00 1.00 1.00 1.0
Phosphorous 0.015 max 0.015 max 0.030 max 0.030 max 0.030 max 0.03 max
Phosphorous 0.015 0.015 0.030 0.030 0.030 0.03
Sulfur 0.010 max 0.010 max 0.010 max 0.010 max 0.010 max 0.03 max
Sulfur 0.010 0.010 0.010 0.010 0.010 0.03
Silicon 0.20 max 0.20 max 0.50 max 0.50 max 0.50 max 0.5 max
Silicon 0.20 0.20 0.50 0.50 0.50 0.5
Chromium 19.00–22.00 19.00–22.50 18.0–27.0 12.0–22.0 14.0–19.0 19.5–22.5
Nickel 59.00–63.00 55.00–59.00 45.0–60.0 50.0–60.0 34.0–42.0 42.0–46.0
Molybdenum 7.00–9.50 7.00–9.50 2.5–5.5 9.0–15.0 2.5–5.5 2.5–3.5
Niobium 2.75–4.00 2.75–4.00 2.5–6.0 4.0–6.0 0.10 max 0.5 max
(Columbium)
Niobium 2.75–4.00 2.75–4.00 2.5–6.0 4.0–6.0 0.10 0.5
C
Titanium 1.00–1.60 1.00–1.70 2.0 max 1.00 max 2.0–3.0 1.9–2.40
Titanium 1.00–1.60 1.00–1.70 2.0 1.00 2.0–3.0 1.9–2.40
Aluminum 0.35 max 0.35 max 2.0 max 2.00 max 0.35 max 0.1–0.5
Aluminum 0.35 0.35 2.0 2.00 0.35 0.1–0.5
A A A A A
Iron remainder remainder remainder remainder remainder 22.0min
B B B B B D
Iron rem rem rem rem rem 22.0
Other . . mo + 0.5 W = 2.5–5.5 . . Cu 1.5–3.0
Other . . Mo + 0.5 W = 2.5–5.5 . . Cu 1.5–3.0
Tungsten . . 6.0 max 0.5–2.5 . .
Tungsten . . 6.0 0.5–2.5 . .
A
All values are maximums unless a range is provided or is a minimum.
B
Determined arithmetically by difference. Iron or nickel shall be determined arithmetically by difference, “rem” means remainder.
C
Columbium and Niobium are interchangeable names for the same element and both names are acceptable for use in B02.07 specifications.
D
Minimum.
A
TABLE 2 Solution Treated Mechanical Properties
Tensile Strength, Yield Strength, Elongation Reduction
Alloy min min in 4D, of Area,
ksi MPa ksi MPa % min % min
N07716 and 110 758 45 310 30 40
N07725
N07773 and 90 621 35 241 35 50
N07776
N09777 75 517 30 207 35 50
N09925 75 517 35 241 35 50
7.2 The solution treated material shall be capable of meeting the mechanical property requirements of Table 3 following the
precipitation hardening aging treatment described in Table 3.
7.3 When the material is to be supplied in the solution treated plus aged condition, mechanical property requirements shall be
those shown in Table 3, or as agreed upon between the purchaser and the manufacturer as part of the purchase contract.
NOTE 2—An aging treatment other than that described in Table 3 may be used provided the mechanical property and other requirements of this
specification or the governing purchase contract are met.
8. Dimensions and Permissible Variations
8.1 Bar—Bar shall conform to the variations in dimensions prescribed in Tables 4-12, inclusive, as applicable.
8.2 Wire—Wire shall conform to the variations in dimensions prescribed in Tables 13-17, inclusive, as applicable.
9. Workmanship, Finish, and Appearance
9.1 The product shall be uniform in quality and condition, smooth, commercially straight or flat, and free from injurious
imperfections.
B805 − 23
A
TABLE 3 Capability Mechanical Properties
Tensile Yield Strength, Elongation Reduction
Alloy Strength, min min in 4D, of Area,
ksi MPa ksi MPa % min % min
N07716 and N07725 165 1137 120 827 20 35
N07773 and N07776 140 965 120 827 20 30
N09777 125 862 110 758 25 35
B
N09925 140 965 105 724 18 25
C
N09925 140 965 110 758 18 25
A
Properties after aging solution treated material.
Aging treatment for UNS N07716 and N07725 consists of 1350°F (732°C) for 8
h 1350 °F (732 °C) for 8 h followed by furnace cooling to 1150 to 1200°F (621 to
649°C), holding 8 h, 1150 °F to 1200 °F (621 °C to 649 °C), holding 8 h, and air
cooling. See Note 2.
Aging treatment for UNS N07773 consists of 1275°F (690°C) for 20 h 1275 °F
(690 °C) for 20 h followed by air cooling (see Note 2).
Aging treatment for UNS N07776 consists of 1335°F (725°C) for 8 h 1335 °F
(725 °C) for 8 h followed by furnace cooling to 1155°F (625°C),1155 °F (625 °C),
holding 8 h, and air cooling (see Note 2).
Aging treatment for UNS N09777 consists of 1330°F (720°C)1330 °F (720 °C)
for 8 h followed by furnace cooling to 1150°F (620°C),1150 °F (620 °C), holding 8
h, and air cooling (see Note 2). Aging treatment for UNS N09925 consists of
1365°F (740°C),1365 °F (740 °C), hold at temperature for 6 to 9 h, 6 h to 9 h,
furnace cool to 1150°F (62°C),1150 °F (62 °C), hold until total precipitation heat
treatment time has reached 18 h, air cool or faster.
B
Cold worked, solution annealed and aged.
C
Hot worked, solution annealed and aged.
10. Sampling
10.1 Lot Definition:
10.1.1 A lot for chemical analysis shall consist of one heat.
10.1.2 A lot for mechanical properties shall consist of all material from the same heat, nominal diameter, or thickness, subjected
to the same heat treatment at the same time.
10.2 Test Material Selection:
10.2.1 Chemical Analysis—Representative samples shall be taken at the time of final ingot casting or during subsequent
processing.
10.2.2 Product Analysis—Shall be solely the responsibility of the purchaser.
10.2.3 Mechanical Properties—Samples of material to provide test specimens shall be taken from locations in each lot as to be
representative of that lot.
11. Number of Tests
11.1 Chemical Analysis—One test per lot.
11.2 Mechanical Properties—One test per lot.
12. Specimen Preparation
12.1 Tension test specimens shall be taken from material in the final condition and tested in the direction of fabrication.
13. Test Methods
13.1 Chemical Composition—In case of disagreement, the chemical composition shall be determined in accordance with Test
Methods E1473.
B805 − 23
TABLE 4 Permissible Variations in Size of Hot-Rolled Round and Square Bars
A
Permissible Variations from Specified Size, in. (mm) Out-of-Round or
B
Out-of-Square, in. (mm)
Over Under
C,D E E E
1 5
⁄4 (6.35) to ⁄16 (7.94), incl
C,D
5 7
Over ⁄16 (7.94) to ⁄16 (11.11), incl 0.006 (0.15) 0.006 (0.15) 0.009 (0.23)
C,D
7 5
Over ⁄16 (11.11) to ⁄8 (15.88), incl 0.007 (0.18) 0.007 (0.18) 0.010 (0.25)
5 7
Over ⁄8 (15.88) to ⁄8 (22.22), incl 0.008 (0.20) 0.008 (0.20) 0.012 (0.30)
Over ⁄8 (22.22) to 1 (25.40), incl 0.009 (0.23) 0.009 (0.23) 0.013 (0.33)
Over 1 (25.40) to 1 ⁄8 (28.58), incl 0.010 (0.25) 0.010 (0.25) 0.015 (0.38)
1 1
Over 1 ⁄8 (28.58) to 1 ⁄4 (31.75), incl 0.011 (0.28) 0.011 (0.28) 0.016 (0.41)
1 3
Over 1 ⁄4 (31.75) to 1 ⁄8 (34.92), incl 0.012 (0.30) 0.012 (0.30) 0.018 (0.46)
3 1
Over 1 ⁄8 (34.92) to 1 ⁄2 (38.10), incl 0.014 (0.36) 0.014 (0.36) 0.021 (0.53)
1 1 1
Over 1 ⁄2 (38.10) to 2 (50.80), incl ⁄64 (0.40) ⁄64 (0.40) 0.023 (0.58)
1 1
Over 2 (50.80) to 2 ⁄2 (63.50), incl ⁄32 (0.79) 0 0.023 (0.58)
1 1 3
Over 2 ⁄2 (63.50) to 3 ⁄2 (88.90), incl ⁄64 (1.19) 0 0.035 (0.89)
1 1 1
Over 3 ⁄2 (88.90) to 4 ⁄2 (114.30), incl ⁄16 (1.59) 0 0.046 (1.17)
1 1 5
Over 4 ⁄2 (114.30) to 5 ⁄2 (139.70), incl ⁄64 (1.98) 0 0.058 (1.47)
1 1 1
Over 5 ⁄2 (139.70) to 6 ⁄2 (165.10), incl ⁄8 (3.18) 0 0.070 (1.78)
1 5
Over 6 ⁄2 (165.10) to 8 (203.20), incl ⁄32 (3.97) 0 0.085 (2.18)
A
Out-of-round is the difference between the maximum and minimum diameters of the bar, measured at the same cross section.
B
Out-of-square section is the difference in the two dimensions at the same cross section of a square bar, each dimension being the distance between opposite faces.
C
1 5
Size tolerances have not been evolved for rounds in the size range of ⁄4 to in. to ⁄16 in. (6.35 to 7.94 mm), (6.35 mm to 7.94 mm), inclusive. Size tolerances have not
1 5
been evolved for round sections in the size range of ⁄4 in. to approximately ⁄8 in. (6.35 to 15.88 mm) (6.35 mm to 15.88 mm) in diameter which are produced on rod mills
in coils.
D
Variations in size of coiled product made on rod mills are greater than size tolerances for product made on bar mills.
E
Squares in this size are not produced as hot-rolled products.
TABLE 5 Permissible Variations in Size of Hot-Rolled Hexagonal and Octagonal Bars
Specified Sizes Measured Permissible Variations from Specified Size, in. (mm) Maximum Difference in
Between Opposite Sides, 3 Measurements for Hexagons
Over Under
in. (mm) only, in. (mm)
1 1
⁄4 (6.35) to ⁄2 (12.70), incl 0.007 (0.18) 0.007
...