ASTM B446-03
(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 – 03
Standard Specification for
Nickel-Chromium-Molybdenum-Columbium Alloy (UNS
N06625), Nickel-Chromium-Molybdenum-Silicon Alloy (UNS
N06219), and Nickel-Chromium-Molybdenum-Tungsten Alloy
1
(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 for this product/material as provided by the manufacturer, to
establish appropriate safety and health practices, and deter-
1.1 This specification covers nickel-chromium-
mine the applicability of regulatory limitations prior to use.
molybdenum-columbium (UNS N06625), nickel-chromium-
molybdenum-silicon alloy (UNS N06219), and Nickel-
2. Referenced Documents
Chromium-Molybdenum-Tungsten Alloy (UNS N06650)* in
2.1 ASTM Standards:
the form of hot-worked rod and bar and cold-worked rod in the
B 443 Specification for Nickel-Chromium-Molybdenum-
conditions shown in Table 1.
Columbium Alloy (UNS N06625) and Nickel-Chromium-
1.1.1 UNS N06625 products are furnished in two grades of
Molybdenum-Silicon Alloy (UNS N06219) Plate, Sheet,
different heat-treated conditions:
2
and Strip
1.1.1.1 Grade 1 (Annealed)—Material is normally em-
B 880 Specification for General Requirements for Chemical
ployed in service temperatures up to 1100°F (593°C).
Check Analysis Limits for Nickel, Nickel Alloys and
1.1.1.2 Grade 2 (Solution Annealed)—Material is normally
2
Cobalt Alloys
employed in service temperatures above 1100°F (593°C) when
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E 8 Test Methods forTensionTesting of Metallic Materials
resistance to creep and rupture is required.
E 29 Practice for Using Significant Digits in Test Data to
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NOTE 1—Hot-working or reannealing may change properties signifi-
Determine Conformance with Specifications
cantly, depending on working history and temperatures.
E 1473 Test Methods for Chemical Analysis of Nickel,
5
1.1.2 AlloysUNSN06219andUNSN06650aresuppliedin
Cobalt, and High-Temperature Alloys
solution annealed condition only.
3. Terminology
1.2 The values stated in inch-pound units are to be regarded
as the standard. The values given in parentheses are for 3.1 Definitions of Terms Specific to This Standard:
information only.
3.1.1 bar—material of rectangular (flats) or square solid
1
1.3 The following precautionary caveat pertains only to the section up to and including 10 in. (254 mm) in width and ⁄8 in.
test methods portion, Section 12, of this specification: This
(3.2 mm) and over in thickness in straight lengths.
standard does not purport to address all of the safety concerns, 3.1.1.1 Discussion—Hot-worked rectangular bar in widths
if any, associated with its use. It is the responsibility of the user
10 in. (254 mm) and under may be furnished as hot-rolled plate
of this standard to become familiar with all hazards including with sheared or cut edges in accordance with Specification
those identified in the appropriate Material Safety Data Sheet
B 443, provided the mechanical property requirements of this
specification are met.
3.1.2 rod—material of round solid section furnished in
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This specification is under the jurisdiction of ASTM Committee B02 on straight lengths.
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 June 10, 2003. Published July 2003. Originally Annual Book of ASTM Standards, Vol 02.04.
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approved in 1966. Last previous edition approved in 2002 as B 446 - 02. 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.
5
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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B446–03
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)
Carbon 0.10 max 0.05 max 0.03 max
(MPa) min, ksi (MPa) 4D,min,%
B
UNS N06625 Grade 1 (Annealed) Manganese 0.50 max 0.50 max 0.50 max
Up to 4 (102), incl 120 60 30 Silicon 0.50 max 0.70-1.10 0.50 max
Over 4 (102) to 10 (254), 110 50 25 Phosphorus 0.015 max 0.020 max 0.020 max
incl Sulfur 0.015 max 0.010 ma
...
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