ASTM B649-05
(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
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
SCOPE
1.1 This specification covers nickel-iron-chromium-molybdenum-copper-nitrogen alloys (UNS N08925, UNS N08031, UNS N08354, and UNS N08926), and Cr-Ni-Fe-N low-carbon alloy (UNS R20033) bar and 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.
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 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
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Standards Content (Sample)
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Designation: B 649 – 05
Standard Specification for
Ni-Fe-Cr-Mo-Cu-N Low-Carbon Alloys (UNS N08925,
UNS N08031, UNS N08354, and UNS N08926), and
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Cr-Ni-Fe-N Low-Carbon Alloy (UNS R20033) Bar and Wire
This standard is issued under the fixed designation B 649; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope A 484/A 484M Specification for General Requirements for
Stainless Steel Bars, Billets, and Forgings
1.1 This specification covers nickel-iron-chromium-
B 880 Specification for General Requirements for Chemical
molybdenum-copper-nitrogen alloys (UNS N08925, UNS
Check Analysis Limits for Nickel, Nickel Alloys, and
N08031, UNS N08354, and UNS N08926), and Cr-Ni-Fe-N
Cobalt Alloys
low-carbon alloy (UNS R20033) bar and wire.
E8 Test Methods for Tension Testing of Metallic Materials
1.2 ASTM International has adopted definitions whereby
E29 Practice for Using Significant Digits in Test Data to
some grades, such as UNS N08904, previously in this speci-
Determine Conformance with Specifications
fication were recognized as stainless steels, because those
E55 PracticeforSamplingWroughtNonferrousMetalsand
grades have iron as the largest element by mass percent. Such
Alloys for Determination of Chemical Composition
grades are under the oversight of ASTM Committee A01 and
E 527 Practice for Numbering Metals and Alloys (UNS)
itssubcommittees.TheproductsofN08904previouslycovered
E 1473 Test Methods for Chemical Analysis of Nickel,
in this specification are now covered by Specifications A 479/
Cobalt, and High-Temperature Alloys
A 479M and A 484/A 484M.
1.3 The values stated in inch-pound units are to be regarded
3. Terminology
as standard. The values given in parentheses are mathematical
3.1 Definitions of Terms Specific to This Standard:
conversions to SI units that are provided for information only
3.1.1 bars, n—hot-finished rounds, squares, octagons, and
and are not considered standard.
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hexagons: ⁄4 in. (6.35 mm) and over in diameter or size.
1.4 This standard does not purport to address all of the
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Hot-finished flats: ⁄4 in. to 10 in. (254 mm) inclusive in width,
safety concerns, if any, associated with its use. It is the
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⁄8 in. (3.18 mm) and over in thickness. Cold-finished rounds,
responsibility of the user of this standard to become familiar
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squares, octagons, hexagons, and shapes: over ⁄2 in. (12.70
with all hazards including those identified in the appropriate
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mm) in diameter or size. Cold-finished flats: ⁄8 in. (9.52 mm)
Material Safety Data Sheet for this product/material as pro-
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and over in width (see 3.1.1.1) and ⁄8 in. and over in thickness
vided by the manufacturer, to establish appropriate safety and
(see 3.1.1.2).
health practices, and determine the applicability of regulatory
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3.1.1.1 Discussion—Widths less than ⁄8 in. (9.52 mm) and
limitations prior to use.
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thicknesses less than ⁄16 in. (4.76 mm) are described generally
2. Referenced Documents as flat wire.
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2 3.1.1.2 Discussion—Thickness ⁄8 in. to under ⁄16 in. (3.18
2.1 ASTM Standards:
mm to under 4.76 mm) can be cold-rolled strip as well as bar.
A 479/A 479M Specification for Stainless Steel Bars and
3.1.2 wire, n—cold-finished only: round, square, octagon,
Shapes for Use in Boilers and Other Pressure Vessels
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hexagon, and shape wire, ⁄2 in. (12.70 mm) and under in
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diameter or size. Cold-finished only: flat wire, ⁄16 in. to under
3 3
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⁄8 in. (4.76 mm to under 9.52 mm) in width, 0.010 to under ⁄16
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
in. (0.25 to under 4.76 mm) in thickness.
B02.07 on Refined Nickel and Cobalt and Their Alloys.
CurrenteditionapprovedJune1,2005.PublishedJuly2005.Originallyapproved
4. Ordering Information
in 1981. Last previous edition approved in 2004 as B 649 - 04.
4.1 It is the responsibility of the purchaser to specify all
* New designation established in accordance withASTM E 527 and SAE J1086,
Practice for Numbering Metals and Alloys (UNS).
requirements that are necessary for material ordered to this
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
specification. Examples of such requirements include, but are
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
not limited to, the following:
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 4.1.1 Quantity (weight or number of pieces),
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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