ASTM B446-02
(Specification)Standard Specification for Nickel-Chromium-Molybdenum-Columbium Alloy (UNS N06625), Nickel-Chromium-Molybdenum-Silicon Alloy (UNS N06219), and Nickel-Chromium-Molybdenum-Tungsten Alloy (UNS N06650)* Rod and Bar
Standard Specification for Nickel-Chromium-Molybdenum-Columbium Alloy (UNS N06625), Nickel-Chromium-Molybdenum-Silicon Alloy (UNS N06219), and Nickel-Chromium-Molybdenum-Tungsten Alloy (UNS N06650)* Rod and Bar
SCOPE
1.1 This specification covers nickel-chromium-molybdenum-columbium (UNS N06625), nickel-chromium-molybdenum-silicon alloy (UNS N06219), and Nickel-Chromium-Molybdenum-Tungsten Alloy (UNS N06650)* in the form of hot-worked rod and bar and cold-worked rod in the conditions shown in Table 1.
1.1.1 UNS N06625 products are furnished in two grades of different heat-treated conditions:
Grade 1 (Annealed)—Material is normally employed in service temperatures up to 1100°F (593°C).
Grade 2 (Solution Annealed)—Material is normally employed in service temperatures above 1100°F (593°C) when resistance to creep and rupture is required.
Note 1—Hot-working or reannealing may change properties significantly, depending on working history and temperatures.
1.1.2 Alloys UNS N06219 and UNS N06650 are supplied in solution annealed condition only.
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.
1.3 The following precautionary caveat pertains only to the test methods portion, Section 12, of this specification: 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.
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Designation: B 446 – 02
Standard Specification for
Nickel-Chromium-Molybdenum-Columbium Alloy (UNS
N06625), Nickel-Chromium-Molybdenum-Silicon Alloy (UNS
N06219), and Nickel-Chromium-Molybdenum-Tungsten Alloy
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(UNS N06650)* Rod and Bar
This standard is issued under the fixed designation B 446; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 2. Referenced Documents
1.1 This specification covers nickel-chromium- 2.1 ASTM Standards:
molybdenum-columbium (UNS N06625), nickel-chromium- B 443 Specification for Nickel-Chromium-Molybdenum-
molybdenum-silicon alloy (UNS N06219), and Nickel- Columbium Alloy (UNS N06625) and Nickel-Chromium-
Chromium-Molybdenum-Tungsten Alloy (UNS N06650)* in Molybdenum-Silicon Alloy (UNS N06219) Plate, Sheet,
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the form of hot-worked rod and bar and cold-worked rod in the and Strip
conditions shown in Table 1. B 880 Specification for General Requirements for Chemical
1.1.1 UNS N06625 products are furnished in two grades of Check Analysis Limits for Nickel, Nickel Alloys and
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different heat-treated conditions: Cobalt Alloys
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1.1.1.1 Grade 1 (Annealed)—Material is normally em- E 8 Test Methods for Tension Testing of Metallic Materials
ployed in service temperatures up to 1100°F (593°C). E 29 Practice for Using Significant Digits in Test Data to
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1.1.1.2 Grade 2 (Solution Annealed)—Material is normally Determine Conformance with Specifications
employed in service temperatures above 1100°F (593°C) when E 1473 Test Methods for Chemical Analysis of Nickel,
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resistance to creep and rupture is required. Cobalt, and High-Temperature Alloys
NOTE 1—Hot-working or reannealing may change properties signifi-
3. Terminology
cantly, depending on working history and temperatures.
3.1 Definitions of Terms Specific to This Standard:
1.1.2 Alloys UNS N06219 and UNS N06650 are supplied in
3.1.1 bar—material of rectangular (flats) or square solid
solution annealed condition only.
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section up to and including 10 in. (254 mm) in width and ⁄8 in.
1.2 The values stated in inch-pound units are to be regarded
(3.2 mm) and over in thickness in straight lengths.
as the standard. The values given in parentheses are for
3.1.1.1 Discussion—Hot-worked rectangular bar in widths
information only.
10 in. (254 mm) and under may be furnished as hot-rolled plate
1.3 The following precautionary caveat pertains only to the
with sheared or cut edges in accordance with Specification
test methods portion, Section 12, of this specification: This
B 443, provided the mechanical property requirements of this
standard does not purport to address all of the safety concerns,
specification are met.
if any, associated with its use. It is the responsibility of the user
3.1.2 rod—material of round solid section furnished in
of this standard to become familiar with all hazards including
straight lengths.
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 deter-
mine the applicability of regulatory limitations prior to use.
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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
B02.07 on Refined Nickel and Cobalt and Their Alloys.
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Current edition approved May 10, 2002. Published July 2002. Originally Annual Book of ASTM Standards, Vol 02.04.
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published as B 446 – 66. Last previous edition B 446 – 00 . Annual Book of ASTM Standards, Vol 03.01.
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* New designation established in accordance with Practice E 527 and SAE Annual Book of ASTM Standards, Vol 14.02.
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J 1086, Practice for Numbering Metals and Alloys (UNS). 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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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
B446–02
TABLE 1 Conditions for Hot-Worked Rod and Bar and Cold- TABLE 2 Chemical Requirements
A
Worked Rod
Composition
Limits, %
Tensile Yield Elongation
Element
Diameter or Distance
Strength Strength in 2 in. or
N06625 N06219 N06650
Between Parallel
min, ksi (0.2 % offset), 50 mm or
Surfaces, in. (mm)
(MPa) min, ksi (MPa) 4D, min, % Carbon 0.10 max 0.05 max 0.03 max
B
UNS N06625 Grade 1 (Annealed) Manganese 0.50 max 0.50 max 0.50 m
...
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