ASTM B408-01
(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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Designation: B 408 – 01
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 3.1.1 bar—material of rectangular (flats), hexagonal, or
2 square solid section up to and including 10 in. (254 mm) in
1.1 This specification covers UNS N08120, UNS N08800,
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width and ⁄8 in. (3.2 mm) and over in thickness in straight
UNS N08810, UNS N08811*, and UNS N08890 in the form of
lengths.
hot-worked and cold-worked rod and bar. Alloy UNS N08800
3.1.1.1 Discussion—Hot-worked rectangular bar in widths
is normally employed in service temperatures up to and
10 in. (254 mm) and under may be furnished as hot-rolled plate
including 1100°F (593°C). Alloys UNS N08120, UNS
with sheared or cut edges in accordance with Specification
N08810, UNS N08811, and UNS N08890 are normally em-
B 408, provided the mechanical property requirements of
ployed in service temperatures above 1100°F (593°C) where
Specification B 408 are met.
resistance to creep and rupture is required, and they are
3.1.2 rod—material of round solid section furnished in
annealed to develop controlled grain size for optimum proper-
straight lengths.
ties in this temperature range.
1.2 The values stated in inch-pound units are to be regarded
4. Ordering Information
as the standard. The values given in parentheses are for
4.1 Orders for material to this specification should include
information only.
information with respect to the following:
2. Referenced Documents 4.1.1 ASTM designation, and year of issue.
4.1.2 Alloy designation or UNS number.
2.1 ASTM Standards:
4.1.3 Section—Rod (round) or bar (square, hexagonal, or
B 880 Specification for General Requirements for Chemical
rectangular).
Check Analysis Limits for Nickel, Nickel Alloys, and
3
4.1.4 Dimensions—Dimensionsincludinglength(Section8,
Cobalt Alloys
4
Tables 1-4 incl).
E 8 Test Methods forTensionTesting of Metallic Materials
4.1.5 Condition (Table 5 and Appendix Appendix X1).
E 29 Practice for Using Significant Digits in Test Data to
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4.1.6 Finish (Appendix X1).
Determine Conformance with Specifications
4.1.7 Quantity (feet or number of pieces).
E 112 Test Methods for Determining the Average Grain
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4.1.8 Certification—State if certification or a report of test
Size
results is required (Section 16).
E 1473 Test Methods for Chemical Analysis of Nickel,
6
4.1.9 Samples for Product (Check) Analysis—State whether
Cobalt, and High-Temperature Alloys
samples for product (check) analysis should be furnished.
3. Terminology
4.1.10 Purchaser Inspection—If purchaser wishes to wit-
ness tests or inspection of material at place of manufacture, the
3.1 Definitions of Terms Specific to This Standard:
purchase order must so state indicating which test or inspec-
tions are to be witnessed.
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This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
5. Materials and Manufacture
B02.07 on Refined Nickel and Cobalt and Their Alloys.
5.1 Heat Treatment—The final heat treatment of UNS
Current edition approved Nov. 10, 2001. Published January 2002. Originally
published as B 408 – 57 T. Last previous edition B 408 – 96.
N08120 shall be 2150°F (1177°C) minimum, UNS N08810,
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
2050°F (1121°C) minimum, UNS N08811, and UNS N08890,
cation SB-408 in Section II of that Code.
2100°F (1149°C) minimum.
* New designations established in accordance with ASTM E 527 and
SAE J1086, Practice for Numbering Metals and Alloys (UNS).
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6. Chemical Composition
Annual Book of ASTM Standards, Vol 02.04.
4
Annual Book of ASTM Standards, Vol 03.01.
6.1 The material shall conform to the composition limits
5
Annual Book of ASTM Standards, Vol 14.02.
6
specified in Table 6.
Annual Book of ASTM Standards, Vol 03.05.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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B 408
TABLE 1 Permissible Variations in Diameter or Distance
8.3 Corners—Cold-worked bars will have practically exact
Between Parallel Surfaces of Cold-Worked Rod and Bar
angles and sharp corners.
Permissible Variations from
8.4 Machining Allowances for Hot-Worked Materials—
Specified Dimension, in.
Specified Dimension, in. (mm)
A
When the surfaces of hot-worked products are to be machined,
(mm)
+−
the allowances prescribed in Table 3 are recommended for
Rounds:
normal machining operations.
1 16 (1
...
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