ASTM B408-96
(Specification)Standard Specification for Nickel-Iron-Chromium Alloy Rod and Bar
Standard Specification for Nickel-Iron-Chromium Alloy Rod and Bar
SCOPE
1.1 This specification covers UNS N08120, UNS N08800, UNS N08810, UNS N08811*, and UNS N08890 in the form of hot-worked and cold-worked rod and bar. Alloy UNS N08800 is normally employed in service temperatures up to and including 1100°F (593°C). Alloys UNS N08120, UNS N08810, UNS N08811, and UNS N08890 are normally employed in service temperatures above 1100°F (593°C) where resistance to creep and rupture is required, and they are annealed to develop controlled grain size for optimum properties in this temperature range.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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: B 408 – 96 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
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Nickel-Iron-Chromium Alloy Rod and Bar
This standard is issued under the fixed designation B 408; 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 B 408, provided the mechanical property requirements of
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Specification B 408 are met.
1.1 This specification covers UNS N08120, UNS N08800,
3.1.2 rod—material of round solid section furnished in
UNS N08810, and UNS N08811* in the form of hot-worked
straight lengths.
and cold-worked rod and bar. Alloy UNS N08800 is normally
employed in service temperatures up to and including 1100°F
4. Ordering Information
(593°C). Alloys UNS N08120, UNS N08810, and UNS
N08811 are normally employed in service temperatures above 4.1 Orders for material to this specification should include
information with respect to the following:
1100°F (593°C) where resistance to creep and rupture is
required, and they are annealed to develop controlled grain size 4.1.1 ASTM designation, and year of issue.
for optimum properties in this temperature range. 4.1.2 Alloy designation or UNS number.
4.1.3 Section—Rod (round) or bar (square, hexagonal, or
1.2 The values stated in inch-pound units are to be regarded
as the standard. The values given in parentheses are for rectangular).
4.1.4 Dimensions—Dimensions including length (Section 8,
information only.
Tables 1-4 incl).
2. Referenced Documents
4.1.5 Condition (Table 5 and Appendix Appendix X1).
4.1.6 Finish (Appendix X1).
2.1 ASTM Standards:
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4.1.7 Quantity (feet or number of pieces).
E 8 Test Methods for Tension Testing of Metallic Materials
4.1.8 Certification—State if certification or a report of test
E 29 Practice for Using Significant Digits in Test Data to
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results is required (Section 16).
Determine Conformance with Specifications
4.1.9 Samples for Product (Check) Analysis—State whether
E 112 Test Methods for Determining the Average Grain
3
samples for product (check) analysis should be furnished.
Size
4.1.10 Purchaser Inspection—If purchaser wishes to wit-
E 1473 Test Methods for Chemical Analysis of Nickel,
5
ness tests or inspection of material at place of manufacture, the
Cobalt, and High-Temperature Alloys
purchase order must so state indicating which test or inspec-
3. Terminology
tions are to be witnessed.
3.1 Definitions of Terms Specific to This Standard:
5. Materials and Manufacture
3.1.1 bar—material of rectangular (flats), hexagonal, or
square solid section up to and including 10 in. (254 mm) in 5.1 Heat Treatment—The final heat treatment of UNS
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width and ⁄8 in. (3.2 mm) and over in thickness in straight N08120 shall be 2150°F (1177°C) minimum, UNS N08810,
lengths. 2050°F (1121°C) minimum, and UNS N08811, 2100°F
3.1.1.1 Discussion—Hot-worked rectangular bar in widths (1149°C) minimum.
10 in. (254 mm) and under may be furnished as hot-rolled plate
with sheared or cut edges in accordance with Specification 6. Chemical Composition
6.1 The material shall conform to the composition limits
specified in Table 6.
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This specification is under the jurisdiction of ASTM Committee B-2 on
6.2 If a product (check) analysis is performed by the
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
purchaser, the material shall conform to the product (check)
B02.07 on Refined Nickel and Cobalt, and Alloys Containing Nickel or Cobalt, or
analysis variations in Table 6.
Both, as Principal Constituents.
Current edition approved June 28, 1996. Published August 1996. Originally
published as B 408 – 57 T. Last previous edition B 408 – 95a.
7. Mechanical Properties and Other Requirements
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For ASME Boiler and Pressure Vessel Code applications see related Specifi-
7.1 Mechanical Properties—The material shall conform to
cation SB-408 in Section II of that Code.
* New designations established in accordance with ASTM E527 and SAE J1086,
the mechanical properties specified in Table 5.
Practice for Numbering Metals and Alloys (UNS).
7.2 Grain Size—Annealed UNS Alloys N08120, N08810,
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Annual Book of ASTM Standards, Vol 03.01.
4
and N08811 shall conform to an average grain size of ASTM
Annual Book of ASTM Standards, Vol 14.02.
5
Annual Book of ASTM Standards, Vol 03.06. No. 5 or coarser.
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B 408
TABLE 1 Permissible Variations in Diameter or Distance
ordered to cut lengths will be furnished with square saw-cut or
Between Parallel Surfaces
...
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