ASTM B649-06(2016)

Standard Specification for Ni-Fe-Cr-Mo-Cu-N Low-Carbon Alloys (UNS N08925,<brk/> UNS N08031, UNS N08354, and UNS N08926), and <brk/>Cr-Ni-Fe-N Low-Carbon Alloy (UNS R20033) Bar and Wire, and Ni-Cr-Fe-Mo-N Alloy (UNS N08936) Wire

ABSTRACT
This specification covers Ni-Fe-Cr-Mo-Cu-N low-carbon alloys (UNS N08925, UNS N08031, UNS N08354, and UNS N08926), Cr-Ni-Fe-N low-carbon alloy (UNS R20033) bar and wire, and Ni-Cr-Fe Mo-N alloy (UNS N08936) wire. The material shall be supplied in the solution-treated or in cold drawn condition as required. Heat treatment shall be waived for forging quality material. The alloys shall conform to the chemical composition requirements prescribed for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, copper, nitrogen, and iron, as determined by chemical or product (check) analysis, and to the tensile requirements including tensile strength, yield strength, and elongation, as determined by tension test.
SCOPE
1.1 This specification covers nickel-iron-chromium-molybdenum-copper-nitrogen alloys (UNS N08925, UNS N08031, UNS N08354, and UNS N08926), and chromium-nickel-iron-nitrogen low-carbon alloy (UNS R20033) bar and wire, and nickel-chromium-iron-molybdenum-nitrogen alloy (UNS N08936) wire.  
1.2 ASTM International has adopted definitions whereby some grades, such as UNS N08904,2 previously in this specification were recognized as stainless steels, because those grades have iron as the largest element by mass percent. Such grades are under the oversight of ASTM Committee A01 and its subcommittees. The products of N08904 previously covered in this specification are now covered by Specifications A479/A479M and A484/A484M.  
1.3 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.  
1.4 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, and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-May-2016
• 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

• Replaces: ASTM B649-06(2011) - Standard Specification for Ni-Fe-Cr-Mo-Cu-N Low-Carbon Alloys (UNS N08925, UNS N08031, UNS N08354, and UNS N08926), and Cr-Ni-Fe-N Low-Carbon Alloy (UNS R20033) Bar and Wire, and Ni-Cr-Fe-Mo-N Alloy (UNS N08936) Wire
• Effective Date: 01-Jun-2016
• Referred By: ASTM B366/B366M-23 - Standard Specification for Factory-Made Wrought Nickel and Nickel Alloy Fittings
• Effective Date: 01-Jun-2016
• Referred By: ASTM B462-18e1 - Standard Specification for Forged or Rolled Nickel Alloy Pipe Flanges, Forged Fittings, and Valves and Parts for Corrosive High-Temperature Service
• Effective Date: 01-Jun-2016

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:B649 −06(Reapproved 2016)
Standard Specification for
Ni-Fe-Cr-Mo-Cu-N Low-Carbon Alloys (UNS N08925,
UNS N08031, UNS N08354, and UNS N08926), and
Cr-Ni-Fe-N Low-Carbon Alloy (UNS R20033) Bar and Wire,
and Ni-Cr-Fe-Mo-N Alloy (UNS N08936) Wire
This standard is issued under the fixed designation B649; 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 2. Referenced Documents
1.1 This specification covers nickel-iron-chromium- 2.1 ASTM Standards:
molybdenum-copper-nitrogen alloys (UNS N08925, UNS A479/A479M Specification for Stainless Steel Bars and
N08031, UNS N08354, and UNS N08926), and chromium- Shapes for Use in Boilers and Other Pressure Vessels
nickel-iron-nitrogen low-carbon alloy (UNS R20033) bar and A484/A484M Specification for General Requirements for
wire, and nickel-chromium-iron-molybdenum-nitrogen alloy Stainless Steel Bars, Billets, and Forgings
(UNS N08936) wire. B880 Specification for General Requirements for Chemical
Check Analysis Limits for Nickel, Nickel Alloys and
1.2 ASTM International has adopted definitions whereby
Cobalt Alloys
some grades, such as UNS N08904, previously in this
E8 Test Methods for Tension Testing of Metallic Materials
specification were recognized as stainless steels, because those
E29 Practice for Using Significant Digits in Test Data to
grades have iron as the largest element by mass percent. Such
Determine Conformance with Specifications
grades are under the oversight of ASTM Committee A01 and
E55 Practice for Sampling Wrought Nonferrous Metals and
itssubcommittees.TheproductsofN08904previouslycovered
Alloys for Determination of Chemical Composition
in this specification are now covered by Specifications A479/
E527 Practice for Numbering Metals and Alloys in the
A479M and A484/A484M.
Unified Numbering System (UNS)
1.3 The values stated in inch-pound units are to be regarded
E1473 Test Methods for Chemical Analysis of Nickel, Co-
as standard. The values given in parentheses are mathematical
balt and High-Temperature Alloys
conversions to SI units that are provided for information only
3. Terminology
and are not considered standard.
3.1 Definitions of Terms Specific to This Standard:
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 3.1.1 bars, n—hot-finished rounds, squares, octagons, and
hexagons: ⁄4 in. (6.35 mm) and over in diameter or size.
responsibility of the user of this standard to become familiar
with all hazards including those identified in the appropriate Hot-finished flats: ⁄4 in. to 10 in. (254 mm) inclusive in width,
⁄8 in. (3.18 mm) and over in thickness. Cold-finished rounds,
Safety Data Sheet (SDS) for this product/material as provided
squares, octagons, hexagons, and shapes: over ⁄2 in. (12.70
by the manufacturer, to establish appropriate safety and health
mm) in diameter or size. Cold-finished flats: ⁄8 in. (9.52 mm)
practices, and determine the applicability of regulatory limi-
and over in width (see 3.1.1.1) and ⁄8 in. and over in thickness
tations prior to use.
(see 3.1.1.2).
3.1.1.1 Discussion—Widths less than ⁄8 in. (9.52 mm) and
This specification is under the jurisdiction of ASTM Committee B02 on
thicknesses less than ⁄16 in. (4.76 mm) are described generally
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
as flat wire.
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved June 1, 2016. Published June 2016. Originally
approved in 1981. Last previous edition approved in 2011 as B649 – 06 (2011). For referenced ASTM standards, visit the ASTM website, www.astm.org, or
DOI: 10.1520/B0649-06R16. contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
New designation established in accordance with Practice E527 and SAE J1086, Standards volume information, refer to the standard’s Document Summary page on
Practice for Numbering Metals and Alloys (UNS).
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B649−06(2016)
1 3
3.1.1.2 Discussion—Thickness ⁄8 in. to under ⁄16 in. (3.18 senting each heat or lot. Such analysis may be made by any of
mm to under 4.76 mm) can be cold-rolled strip as well as bar. the commonly accepted methods that will positively identify
the material.
3.1.2 wire, n—cold-finished only: round, square, octagon,
6.2.1 If a product analysis is made, the material shall
hexagon, and shape wire, ⁄2 in. (12.70 mm) and under in
conform to the product check analysis variation per Specifica-
diameter or size. Cold-finished only: flat wire, ⁄16 in. to under
3 3
tion B880.
⁄8 in. (4.76 mm to under 9.52 mm) in width, 0.010 to under ⁄16
in. (0.25 to under 4.76 mm) in thickness.
7. Mechanical and Other Requirements
4. Ordering Information
7.1 Tensile Requirements—The material shall conform to
4.1 It is the responsibility of the purchaser to specify all
the requirements as to the mechanical property prescribed in
requirements that are necessary for material ordered to this
Table 2.
specification. Examples of such requirements include, but are
not limited to, the following:
8. Dimensions, Weight, and Permissible Variations
4.1.1 Quantity (weight or number of pieces),
8.1 Bar—The material referred to as bar shall conform to
4.1.2 Alloy name or UNS number,
the variations in dimensions prescribed in Tables 3-11
4.1.3 Form (bar or wire),
inclusive, as applicable.
4.1.4 Dimensions,
4.1.5 Finish (Section 9),
8.2 Wire—The material referred to as wire shall conform to
4.1.6 ASTM designation and year of issue,
the permissible variations in dimensions prescribed in Tables
4.1.7 Exceptions to the specification or special
12-16 inclusive, as applicable.
requirements, and
4.1.8 Certification (Section 16). State if certification is
9. Workmanship, Finish, and Appearance
required.
9.1 The material shall be uniform in quality and condition,
smooth, commercially straight or flat, and free of injurious
5. Materials and Manufacture
defects.
5.1 Heat Treatment—With the exception of UNS N08936,
the material shall be supplied in the solution-treated condition
9.2 Bars in the hot-finished condition may be furnished with
except as noted in 5.2. UNS N08936 shall be supplied in the
one of the following finishes:
cold drawn condition.
9.2.1 Scale not removed,
9.2.2 Pickled or descaled, or
NOTE 1—The recommended heat treatment shall consist of heating to a
temperature of 2010 to 2100°F (1100 to 1150°C) followed by water
9.2.3 Turned (rounds only).
quenching for UNS N08925, UNS N08031, 1975 to 2150°F (1080 to
1180°C) followed by water quenching or fast air cool for UNS N08354, 9.3 Bars in the cold-finished condition may be furnished
and UNS N08926, or 2010 to 2150°F (1100 to 1180°C) followed by water
with one of the following finishes:
quenching or fast air cool for UNS R20033.
9.3.1 Cold-drawn,
5.2 The heat treatment shall be waived for forging quality
9.3.2 Centerless ground (rounds only), or
material.
9.3.3 Polished (rounds only).
6. Chemical Composition
9.4 Wire in the cold-finished condition may be furnished
with one of the following finishes:
6.1 The material sampled in accordance with 10.2 shall
conform to the requirements as to chemical composition 9.4.1 Cold-drawn,
prescribed in Table 1.
9.4.2 Centerless ground (rounds only),
9.4.3 Polished (rounds only), or
6.2 Product Analysis—Product analysis may be made by the
purchaser to verify the identity of the finished material repre- 9.4.4 Pickled.
TABLE 1 Chemical Requirements
Element
UNS N08936 UNS N08925 UNS N08031 UNS N08354 UNS N08926 UNS R20033
Carbon, max 0.020 0.020 0.015 0.030 0.020 0.015
Manganese, max 4.00–6.00 1.00 2.0 1.00 2.00 2.0
Phosphorus, max 0.025 0.045 0.020 0.030 0.03 0.02
Sulfur, max 0.010 0.030 0.010 0.010 0.01 0.01
Silicon, max 0.50 0.50 0.3 1.00 0.5 0.50
Nickel 33.00–35.00 24.00–26.00 30.0–32.0 34.0–36.0 24.00–26.00 30.0–33.0
Chromium 26.00–28.00 19.00–21.00 26.0–28.0 22.0–24.0 19.00–21.00 31.0–35.0
Molybdenum 5.00–6.00 6.0–7.0 6.0–7.0 7.0–8.0 6.0–7.0 0.50–2.0
Copper 0.50 0.8–1.5 1.0–1.4 . 0.5–1.5 0.30–1.20
Nitrogen 0.30–0.50 0.1–0.2 0.15–0.25 0.17–0.24 0.15–0.25 0.35–0.60
Iron balance balance balance balance balance balance
B649−06(2016)
A
TABLE 2 Mechanical Property Requirements
12. Specimen Preparation
B
Cold Finished and Hot Finished Annealed,
12.1 Tension test specimens shall be taken from material
All Sizes Except Where Noted
after final heat treatment and shall be selected in the longitu-
Elongation in Forging
Alloy
Tensile Strength, Yield Strength 2 in. (50.8 Quality,
dinal direction.The tension test specimens shall conform to the
C C
min, psi (MPa) min, psi (MPa) mm), min, % All
appropriate sections of Test Methods E8.
Sizes
A
UNS N08925 87 000 (600) 43 000 (300) 40
13. Test Methods
A
UNS N08031 94 000 (650) 40 000 (270) 40
A
UNS N08926 94 000 (650) 43 000 (295) 35
13.1 The chemical composition and mechanical properties
A
UNS N08354 93 000 (640) 43 000 (295) 40
A
of the material as enumerated in this specification shall, in case
UNS R20033 109 000 (750) 55 000 (380) 40
UNS N08936
of disagreement, be determined in accordance with the follow-
Up to 0.063 in. 280 000 (1931) 240 000 (1655) . .
ing methods:
(1.60 mm) dia.,
incl.
Test ASTM Designations
Over 0.063 in. 250 000 (1724) 220 000 (1517) . .
A
(1.60 mm) dia.
Chemical analysis E1473
Tension E8
A
No tensile properties are required on forging quality.
Rounding procedure E29
B
UNS N08936 shall be supplied in the cold drawn condition only.
C Method of sampling E55
For cold finished and annealed wire only, tensile strength 90 000 to 120 000 psi
(620 to 830 MPa).
A
Iron shall be determined arithmetically by difference.
13.2 For purposes of determining compliance with the
limits in this specification, an observed value or a calculated
10. Sampling value shall be rounded as indicated in accordance with the
rounding method of Practice E29.
10.1 Lots for Chemical Analysis and Mechanical Testing:
Rounded Unit for Observed or
10.1.1 A lot for chemical analysis shall consist of one heat.
Requirements
Calculated Value
10.1.2 Alot for testing and inspection purposes shall consist
of material from one heat of the same condition (temper),
Chemical composition nearest unit in the last right-hand
(when expressed in decimals) place of figures of the specified
finish, and cross section, and in no case more than 30 000 lb
limit
(13 600 kg) in mass.
Tensile strength and yield strength nearest 1000 psi (7 MPa)
Elongation nearest 1 %
NOTE 2—Where material cannot be identified by heat, a lot shall consist
of not more than 500 lb (227 kg) of material in the same thickness and
14. Inspection
condition, except that for pieces weighing over 500 lb, only one specimen
shall be taken.
14.1 Inspection of the material by the purchaser shall be
made as agreed upon between the purchaser and the seller as
10.2 Sampling for Chemical Analysis:
10.2.1 A representative sample shall be taken from each part of and set forth in the purchase contract.
heat during pouring or subsequent processing.
15. Rejection and Rehearing
10.2.2 If the manufacturer determines that the material
meets the chemical requirements during pouring or subsequent
15.1 Material that fails to conform to the requirements of
processing, he shall not be required to sample and analyze the
thisspecificationmayberejected.Rejectionshouldbereported
finished product.
to the producer or supplier promptly and in writing. In case of
10.2.3 Product analysis, if performed, shall be wholly the
dissatisfaction with the results of the test, the producer or
responsibility of the purchaser.
supplier may make claim for a rehearing.
10.3 Sampling for Mechanical Tests:
16. Certification
10.3.1 A sample of the material to provide test specimens
for mechanical tests shall be taken from such a location in each 16.1 If required by the purchaser in the contract or purchase
lot as to be representative of that lot.
order, a manufacturer’s certification that the material was
10.3.2 When samples are to be taken after delivery, the manufactured and tested in accordance with this specification
purchaser of material ordered to cut lengths may request on the
shall be furnished at the time of shipment.
purchase order additional material of adequate size to provide
16.2 If required by the purchaser in the contract or purchase
sample coupons for inspection purposes.
order, a copy of the test results shall be furnished at the time of
shipment.
11. Number of Tests
11.1 One chemical analysis shall be made on each lot in 17. Packaging and Package Marking
accordance with 10.1.1.
17.1 Marking—Each bundle or box shall be tagged properly
11.2 One tension test shall be made on each lot in accor- with metal tags showing heat number, grade, condition, speci-
dance with 10.1.2. fication number, and size to assure proper identification.
11.2.1 If any specimens selected to represent any heat fail to 17.1.1 Large diameter bars may be line marked showing
meet any of the test requirements, the material represented by heat number, grade, condition, specification number, and size
such specimens may be reheat-treated and resubmitted for test. at the manufacturer’s discretion.
B649−06(2016)
TABLE 3 Permissible Variations in Size of Hot-Finished Round and Square Bars
A B
Permissible Variations from Specified Size, in. (mm)
Out-of-Round or Out-of-Square,
in. (mm)
Over Under
C,DE 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.
...

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.
Designation: B649 − 06 (Reapproved 2011) B649 − 06 (Reapproved 2016)
Standard Specification for
Ni-Fe-Cr-Mo-Cu-N Low-Carbon Alloys (UNS N08925,
UNS N08031, UNS N08354, and UNS N08926), and
Cr-Ni-Fe-N Low-Carbon Alloy (UNS R20033) Bar and Wire,
and Ni-Cr-Fe-Mo-N Alloy (UNS N08936) Wire
This standard is issued under the fixed designation B649; 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 nickel-iron-chromium-molybdenum-copper-nitrogen alloys (UNS N08925, UNS N08031, UNS
N08354, and UNS N08926), and chromium-nickel-iron-nitrogen low-carbon alloy (UNS R20033) bar and wire, and nickel-
chromium-iron-molybdenum-nitrogen alloy (UNS N08936) wire.
1.2 ASTM International has adopted definitions whereby some grades, such as UNS N08904, previously in this specification
were recognized as stainless steels, because those grades have iron as the largest element by mass percent. Such grades are under
the oversight of ASTM Committee A01 and its subcommittees. The products of N08904 previously covered in this specification
are now covered by Specifications A479/A479M and A484/A484M.
1.3 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.
1.4 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 Material Safety Data
Sheet (MSDS)(SDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices,
and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents
2.1 ASTM Standards:
A479/A479M Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels
A484/A484M Specification for General Requirements for Stainless Steel Bars, Billets, and Forgings
B880 Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt Alloys
E8 Test Methods for Tension Testing of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E55 Practice for Sampling Wrought Nonferrous Metals and Alloys for Determination of Chemical Composition
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
E1473 Test Methods for Chemical Analysis of Nickel, Cobalt and High-Temperature Alloys
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 bars, n—hot-finished rounds, squares, octagons, and hexagons: ⁄4 in. (6.35 mm) and over in diameter or size. Hot-finished
1 1
flats: ⁄4 in. to 10 in. (254 mm) inclusive in width, ⁄8 in. (3.18 mm) and over in thickness. Cold-finished rounds, squares, octagons,
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 May 1, 2011June 1, 2016. Published May 2011June 2016. Originally approved in 1981. Last previous edition approved in 20062011 as
B649 - 06.B649 DOI: 10.1520/B0649-06R11.– 06 (2011). DOI: 10.1520/B0649-06R16.
* New designation established in accordance with Practice E527 and SAE J1086, Practice for Numbering Metals and Alloys (UNS).
New designation established in accordance with Practice E527 and SAE J1086, Practice for Numbering Metals and Alloys (UNS).
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’sstandard’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
B649 − 06 (2016)
1 3
hexagons, and shapes: over ⁄2 in. (12.70 mm) in diameter or size. Cold-finished flats: ⁄8 in. (9.52 mm) and over in width (see
3.1.1.1) and ⁄8 in. and over in thickness (see 3.1.1.2).
3.1.1.1 Discussion—
3 3
Widths less than ⁄8 in. (9.52 mm) and thicknesses less than ⁄16 in. (4.76 mm) are described generally as flat wire.
3.1.1.2 Discussion—
1 3
Thickness ⁄8 in. to under ⁄16 in. (3.18 mm to under 4.76 mm) can be cold-rolled strip as well as bar.
3.1.2 wire, n—cold-finished only: round, square, octagon, hexagon, and shape wire, ⁄2 in. (12.70 mm) and under in diameter
3 3 3
or size. Cold-finished only: flat wire, ⁄16 in. to under ⁄8 in. (4.76 mm to under 9.52 mm) in width, 0.010 to under ⁄16 in. (0.25
to under 4.76 mm) in thickness.
4. Ordering Information
4.1 It is the responsibility of the purchaser to specify all requirements that are necessary for material ordered to this
specification. Examples of such requirements include, but are not limited to, the following:
4.1.1 Quantity (weight or number of pieces),
4.1.2 Alloy name or UNS number,
4.1.3 Form (bar or wire),
4.1.4 Dimensions,
4.1.5 Finish (Section 9),
4.1.6 ASTM designation and year of issue,
4.1.7 Exceptions to the specification or special requirements, and
4.1.8 Certification (Section 16). State if certification is required.
5. Materials and Manufacture
5.1 Heat Treatment—With the exception of UNS N08936, the material shall be supplied in the solution-treated condition except
as noted in 5.2. UNS N08936 shall be supplied in the cold drawn condition.
NOTE 1—The recommended heat treatment shall consist of heating to a temperature of 2010 to 2100°F (1100 to 1150°C) followed by water quenching
for UNS N08925, UNS N08031, 1975 to 2150°F (1080 to 1180°C) followed by water quenching or fast air cool for UNS N08354, and UNS N08926,
or 2010 to 2150°F (1100 to 1180°C) followed by water quenching or fast air cool for UNS R20033.
5.2 The heat treatment shall be waived for forging quality material.
6. Chemical Composition
6.1 The material sampled in accordance with 10.2 shall conform to the requirements as to chemical composition prescribed in
Table 1.
6.2 Product Analysis—Product analysis may be made by the purchaser to verify the identity of the finished material representing
each heat or lot. Such analysis may be made by any of the commonly accepted methods that will positively identify the material.
6.2.1 If a product analysis is made, the material shall conform to the product check analysis variation per Specification B880.
7. Mechanical and Other Requirements
7.1 Tensile Requirements—The material shall conform to the requirements as to the mechanical property prescribed in Table 2.
TABLE 1 Chemical Requirements
Element
UNS N08936 UNS N08925 UNS N08031 UNS N08354 UNS N08926 UNS R20033
Carbon, max 0.020 0.020 0.015 0.030 0.020 0.015
Manganese, max 4.00–6.00 1.00 2.0 1.00 2.00 2.0
Phosphorus, max 0.025 0.045 0.020 0.030 0.03 0.02
Sulfur, max 0.010 0.030 0.010 0.010 0.01 0.01
Silicon, max 0.50 0.50 0.3 1.00 0.5 0.50
Nickel 33.00–35.00 24.00–26.00 30.0–32.0 34.0–36.0 24.00–26.00 30.0–33.0
Chromium 26.00–28.00 19.00–21.00 26.0–28.0 22.0–24.0 19.00–21.00 31.0–35.0
Molybdenum 5.00–6.00 6.0–7.0 6.0–7.0 7.0–8.0 6.0–7.0 0.50–2.0
Copper 0.50 0.8–1.5 1.0–1.4 . 0.5–1.5 0.30–1.20
Nitrogen 0.30–0.50 0.1–0.2 0.15–0.25 0.17–0.24 0.15–0.25 0.35–0.60
Iron balance balance balance balance balance balance
B649 − 06 (2016)
A
TABLE 2 Mechanical Property Requirements
B
Cold Finished and Hot Finished Annealed,
All Sizes Except Where Noted
Elongation in Forging
Alloy
Tensile Strength, Yield Strength 2 in. (50.8 Quality,
C C
min, psi (MPa) min, psi (MPa) mm), min, % All
Sizes
A
UNS N08925 87 000 (600) 43 000 (300) 40
A
UNS N08031 94 000 (650) 40 000 (270) 40
A
UNS N08926 94 000 (650) 43 000 (295) 35
A
UNS N08354 93 000 (640) 43 000 (295) 40
A
UNS R20033 109 000 (750) 55 000 (380) 40
UNS N08936
Up to 0.063 in. 280 000 (1931) 240 000 (1655) . .
(1.60 mm) dia.,
incl.
Over 0.063 in. 250 000 (1724) 220 000 (1517) . .
(1.60 mm) dia.
A
No tensile properties are required on forging quality.
B
UNS N08936 shall be supplied in the cold drawn condition only.
C
For cold finished and annealed wire only, tensile strength 90 000 to 120 000 psi
(620 to 830 MPa).
8. Dimensions, Weight, and Permissible Variations
8.1 Bar—The material referred to as bar shall conform to the variations in dimensions prescribed in Tables 3-11 inclusive, as
applicable.
8.2 Wire—The material referred to as wire shall conform to the permissible variations in dimensions prescribed in Tables 12-16
inclusive, as applicable.
9. Workmanship, Finish, and Appearance
9.1 The material shall be uniform in quality and condition, smooth, commercially straight or flat, and free of injurious defects.
9.2 Bars in the hot-finished condition may be furnished with one of the following finishes:
9.2.1 Scale not removed,
9.2.2 Pickled or descaled, or
9.2.3 Turned (rounds only).
9.3 Bars in the cold-finished condition may be furnished with one of the following finishes:
9.3.1 Cold-drawn,
9.3.2 Centerless ground (rounds only), or
9.3.3 Polished (rounds only).
9.4 Wire in the cold-finished condition may be furnished with one of the following finishes:
9.4.1 Cold-drawn,
9.4.2 Centerless ground (rounds only),
9.4.3 Polished (rounds only), or
9.4.4 Pickled.
10. Sampling
10.1 Lots for Chemical Analysis and Mechanical Testing:
10.1.1 A lot for chemical analysis shall consist of one heat.
10.1.2 A lot for testing and inspection purposes shall consist of material from one heat of the same condition (temper), finish,
and cross section, and in no case more than 30 000 lb (13 600 kg) in mass.
NOTE 2—Where material cannot be identified by heat, a lot shall consist of not more than 500 lb (227 kg) of material in the same thickness and
condition, except that for pieces weighing over 500 lb, only one specimen shall be taken.
10.2 Sampling for Chemical Analysis:
10.2.1 A representative sample shall be taken from each heat during pouring or subsequent processing.
10.2.2 If the manufacturer determines that the material meets the chemical requirements during pouring or subsequent
processing, he shall not be required to sample and analyze the finished product.
10.2.3 Product analysis, if performed, shall be wholly the responsibility of the purchaser.
10.3 Sampling for Mechanical Tests:
B649 − 06 (2016)
TABLE 3 Permissible Variations in Size of Hot-Finished Round and Square Bars
A B
Out-of-Round or Out-of-Square,
Over Under
Permissible Variations from Specified Size, in. (mm) in. (mm)
E E E
C,D
1 5
⁄4 (6.35) to ⁄16 (7.94), incl
0.006 (0.15) 0.006 (0.15) 0.009 (0.23)
C,D
5 7
Over ⁄16 (7.94) to ⁄16 (11.11), incl
0.007 (0.18) 0.007 (0.18) 0.010 (0.25)
C,D
7 5
Over ⁄16 (11.11) to ⁄8 (15.88), incl
0.008 (0.20) 0.008 (0.20) 0.012 (0.30)
5 7
Over ⁄8 (15.88) to ⁄8 (22.22), incl
0.009 (0.23) 0.009 (0.23) 0.013 (0.33)
Over ⁄8 (22.22) to 1 (25.40), incl
0.010 (0.25) 0.010 (0.25) 0.015 (0.38)
Over 1 (25.40) to 1 ⁄8 (28.58), incl.
0.011 (0.28) 0.011 (0.28) 0.016 (0.41)
1 1
Over 1 ⁄8 (28.58) to 1 ⁄4 (31.75), incl
0.012 (0.30) 0.012 (0.30) 0.018 (0.46)
1 3
Over 1 ⁄4 (31.75) to 1 ⁄8 (34.92), incl
0.014 (0.36) 0.014 (0.36) 0.021 (0.53)
3 1
Over 1 ⁄8 (34.92) to 1 ⁄2 (38.10), incl
1 1
⁄64 (0.40) ⁄64 (0.40) 0.023 (0.58)
Over 1 ⁄2 (38.10) to 2 (50.80), incl
⁄32 (0.79) 0 0.023 (0.58)
Over 2 (50.80) to 2 ⁄2 (63.50), incl
⁄64 (1.19) 0 0.035 (0.89)
1 1
Over 2 ⁄2 (63.50) to 3 ⁄2 (88.90), incl
⁄16 (1.59) 0 0.046 (1.17)
1 1
Over 3 ⁄2 (88.90) to 4 ⁄2 (114.30), incl
⁄64 (1.98) 0 0.058 (1.47)
1 1
Over 4 ⁄2 (114.30) to 5 ⁄2 (139.70), incl
⁄8 (3.18) 0 0.070 (1.78)
1 1
Over 5 ⁄2 (139.70) to 6 ⁄2 (165.10), incl
⁄32 (3.97) 0 0.085 (2.18)
Over 6 ⁄2 (165.10) to 8 (203.20), incl
TABLE 3 Permissible Variations in Size of Hot-Finished Round and Square Bars
Permissible Variations from Specified Size, in. (mm) A B
Out-of-Round or 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 from ⁄4 to ⁄16 in. (6.35 to 7.94 mm), incl. Size tolerances have not been evolved for round sections
1 5
in the size range from ⁄4 (6.35 mm) to approximately ⁄8 in. (15.88 mm) in diameter which are produced on rod mills in coils.
D
Squares in this size are not produced as hot-rolled products.
E
Variations in size of coiled product made on rod mills are greater than size tolerances for product made on bar mills.
10.3.1 A sample of the material to provide test specimens for mechanical tests shall be taken from such a location in each lot
as to
...