ASTM B691-02

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Designation: B 691 – 02
Standard Specification for
Iron-Nickel-Chromium-Molybdenum Alloys (UNS N08366 and
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UNS N08367) Rod, Bar, and Wire
This standard is issued under the fixed designation B 691; 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 The terms rod, bar, and wire, as used in this specifi-
cation, are described as follows:
1.1 This specification covers iron-nickel-chromium-
3.1.1.1 bar—hot-finished or cold-finished material of
molybdenum alloys (UNS N08366 and UNS N08367)* in the
round,square,hexagon,octagon,orrectangularsolidsectionin
form of hot-finished and cold-finished rounds, squares, hexa-
straight lengths.
gons, octagons, and rectangles.
3.1.1.2 rod—hot-finished material of round, square, hexa-
1.2 The values stated in inch-pound units are to be regarded
gon, octagon, or rectangular solid section furnished in coils for
as the standard. The values given in parentheses are for
subsequent cold drawing into finished products.
information only.
3.1.1.3 wire—cold-finished material of round, square, hexa-
1.3 The following safety hazards caveat pertains only to the
gon, octagon, or rectangle solid section furnished in coils.
test methods portion, Section 12, of this specification: This
standard does not purport to address all of the safety concerns,
4. Ordering Information
if any, associated with its use. It is the responsibility of the user
4.1 It is the responsibility of the purchaser to specify all
of this standard to become familiar with all hazards including
requirements that are necessary for material ordered to this
those identified in the appropriate Material Safety Data Sheet
specification. Examples of such requirements include, but are
for this product/material as provided by the manufacturer, to
not limited to, the following:
establish appropriate safety and health practices, and deter-
4.1.1 Quantity (feet, metres, or number of pieces),
mine the applicability of regulatory limitations prior to use.
4.1.2 Form (rod, bar, wire),
2. Referenced Documents 4.1.3 Name of material or UNS number,
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4.1.4 Finish (see 8.2),
2.1 ASTM Standards:
4.1.5 Dimensions, including length,
B 880 Specification for General Requirements for Chemical
4.1.6 Certification, if required (Section 15),
Check Analysis Limits for Nickel, Nickel Alloys and
4.1.7 Purchaser’s inspection, if required (Section 13),
Cobalt Alloys
4.1.8 ASTM designation and year of issue, and
E8 Test Methods for Tension Testing of Metallic Materials
4.1.9 Samples for product analysis, if required.
E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
5. Chemical Composition
E 1473 Test Methods for Chemical Analysis of Nickel,
5.1 The material shall conform to the composition limits
Cobalt, and High-Temperature Alloys
specified in Table 1.
3. Terminology 5.2 If a product (check) analysis is made by the purchaser,
the material shall conform to the permissible variations for
3.1 Definitions of Terms Specific to This Standard:
product (check) analysis in Specification B 880.
1 6. Mechanical Properties and Other Requirements
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
6.1 The material shall conform to the mechanical property
B02.07 on Refined Nickel and Cobalt and Their Alloys.
requirements specified in Table 2.
Current edition approved May 10, 2002. Published July 2002. Originally
published as B 691 – 81. Last previous edition B 691 – 95.
* New designation established in accordance withASTM E 527 and SAE J1086,
Practice for Numbering Metals and Alloys.
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Annual Book of ASTM Standards, Vol 03.06.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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B691–02
TABLE 1 Chemical Requirements
given in Table 5. For hot-finished bar and rod hexagons and
Composition Limits, % octagons they shall be as given in Table 6.
Element
7.1.4 Flats (Rectangles)—The permissible variations in
N08366 N08367
width and thickness of cold-finished flats shall be as given in
Carbon 0.035 max 0.030 max
Manganese 2.00 max 2.00 max Table 7 for bars and for wire in Table 8. For hot-finished flat
Silicon 1.00 max 1.00 max
barsandrods,thetolerancesforwidthandthicknessshallbeas
Phosphorus 0.040 max 0.040 max
given in Table 9.
Sulfur 0.030 max 0.030 max
Chromium 20.00 to 22.00 20.00 to 22.00 7.2 Out-of-Round—Hot-finished rounds and cold-finished
Nickel 23.50 to 25.50 23.50 to 25.50
rounds (except forging quality), all s
...