ASTM B649-06
(Specification)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
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
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, 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 A 479/A 479M and A 484/A 484M.
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.
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) 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.
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Designation: B649 – 06
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,
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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
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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
1.2 ASTM International has adopted definitions whereby Check Analysis Limits for Nickel, Nickel Alloys and
some grades, such as UNS N08904, previously in this speci- Cobalt Alloys
fication were recognized as stainless steels, because those E8 Test Methods for Tension Testing of Metallic Materials
grades have iron as the largest element by mass percent. Such E29 Practice for Using Significant Digits in Test Data to
grades are under the oversight of ASTM Committee A01 and Determine Conformance with Specifications
itssubcommittees.TheproductsofN08904previouslycovered E55 Practice for Sampling Wrought Nonferrous Metals and
in this specification are now covered by Specifications A479/ Alloys for Determination of Chemical Composition
A479M and A484/A484M. E527 Practice for Numbering Metals and Alloys in the
1.3 The values stated in inch-pound units are to be regarded Unified Numbering System (UNS)
as standard. The values given in parentheses are mathematical E1473 Test Methods for Chemical Analysis of Nickel,
conversions to SI units that are provided for information only Cobalt, and High-Temperature Alloys
and are not considered standard.
3. Terminology
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 Definitions of Terms Specific to This Standard:
3.1.1 bars, n—hot-finished rounds, squares, octagons, and
responsibility of the user of this standard to become familiar
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with all hazards including those identified in the appropriate hexagons: ⁄4 in. (6.35 mm) and over in diameter or size.
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Hot-finished flats: ⁄4 in. to 10 in. (254 mm) inclusive in width,
Material Safety Data Sheet (MSDS) for this product/material
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as provided by the manufacturer, to establish appropriate ⁄8 in. (3.18 mm) and over in thickness. Cold-finished rounds,
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squares, octagons, hexagons, and shapes: over ⁄2 in. (12.70
safety and health practices, and determine the applicability of
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regulatory limitations prior to use. mm) in diameter or size. Cold-finished flats: ⁄8 in. (9.52 mm)
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and over in width (see 3.1.1.1) and ⁄8 in. and over in thickness
(see 3.1.1.2).
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3.1.1.1 Discussion—Widths less than ⁄8 in. (9.52 mm) and
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thicknesses less than ⁄16 in. (4.76 mm) are described generally
as flat wire.
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3.1.1.2 Discussion—Thickness ⁄8 in. to under ⁄16 in. (3.18
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This specification is under the jurisdiction of ASTM Committee B02 on
mm to under 4.76 mm) can be cold-rolled strip as well as bar.
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved June 1, 2006. Published June 2006. Originally
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approved in 1981. Last previous edition approved in 2005 as B649 - 05. DOI: For referenced ASTM standards, visit the ASTM website, www.astm.org, or
10.1520/B0649-06. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
* NewdesignationestablishedinaccordancewithPracticeE527andSAEJ1086, Standards volume information, refer to the standard’s Document Summary page on
Practice for Numbering Metals and Alloys (UNS). 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.
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B649 – 06
3.1.2 wire, n—cold-finished only: round, square, octagon, 6.2.1 If a product analysis is made, the material shall
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hexagon, and shape wire, ⁄2 in. (12.70 mm) and under in conform to the product check analysis variation per Specifica-
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diameter or size. Cold-finished
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