ASTM B423-03
(Specification)Standard Specification for Nickel-Iron-Chromium-Molybdenum-Copper Alloy (UNS N08825 and N08221)* Seamless Pipe and Tube
Standard Specification for Nickel-Iron-Chromium-Molybdenum-Copper Alloy (UNS N08825 and N08221)* Seamless Pipe and Tube
SCOPE
1.1 This specification covers nickel-iron-chromium-molybdenum-copper alloys (UNS N08825 and N08221)* in the form of cold-worked and hot-finished seamless pipe and tube intended for general corrosive service. The general requirements for pipe and tube are covered in Specification B 829.
1.2 The following precautionary caveat pertains only to the test methods portion, Section 9, 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 establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: B 423 – 03
Standard Specification for
Nickel-Iron-Chromium-Molybdenum-Copper Alloy
1
(UNS N08825 and N08221)* Seamless Pipe and Tube
This standard is issued under the fixed designation B 423; 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 4.1.3 Condition (see Appendix X2),
2
4.1.4 Finish (see Appendix X2),
1.1 This specification covers nickel-iron-chromium-
4.1.5 Dimensions:
molybdenum-copper alloys (UNS N08825 and N08221)* in
4.1.5.1 Tube—Specify outside diameter and nominal or
the form of cold-worked and hot-finished seamless pipe and
minimum wall,
tube intended for general corrosive service. The general
4.1.5.2 Pipe—Specify standard pipe size and schedule,
requirements for pipe and tube are covered in Specification
4.1.5.3 Length—Cut to length or random,
B 829.
4.1.6 Quantity—Feet (or metres) or number of pieces,
1.2 The following precautionary caveat pertains only to the
4.1.7 Hydrostatic Pressure Requirements—Specify test
test methods portion, Section 9, of this specification: This
pressure if other than required by 9.1.1,
standard does not purport to address all of the safety concerns,
4.1.8 Certification— State if certification is required,
if any, associated with its use. It is the responsibility of the user
4.1.9 Samples for Product (Check) Analysis—State whether
of this standard to establish appropriate safety and health
samples for product (check) analysis should be furnished (see
practices and determine the applicability of regulatory limita-
5.2),
tions prior to use.
4.1.10 Purchaser Inspection—If purchaser wishes to wit-
2. Referenced Documents ness tests or inspection of material at place of manufacture, the
purchase order must so state indicating which tests or inspec-
2.1 ASTM Standards:
tions are to be witnessed, and
B 829 Specification for General Requirements for Nickel
3
4.1.11 Small-Diameter and Light-Wall Tube (Converter
and Nickel Alloy Seamless Pipe and Tube
Sizes)—See Appendix X1.
3. General Requirement
5. Chemical Composition
3.1 Material furnished under this specification shall con-
5.1 The material shall conform to the composition limits
form to the applicable requirements of Specification B 829
specified in Table 1. One test is required for each lot as defined
unless otherwise provided herein.
4. Ordering Information
TABLE 1 Chemical Requirements
4.1 It is the responsibility of the purchaser to specify all
requirements that are necessary for the safe and satisfactory Element UNS N08825 UNS N08221
performance of material ordered under this specification.
Nickel 38.0–46.0 39.0–46.0
Chromium 19.5–23.5 20.0–22.0
Examples of such requirements include, but are not limited to,
Iron 22.0 min 22.0 min
the following:
Manganese 1.0 max 1.0 max
4.1.1 Alloy name or UNS number,
Carbon 0.05 max 0.025 max
Copper 1.5–3.0 1.5–3.0
4.1.2 ASTM designation,
Silicon 0.5 max 0.5 max
Sulfur 0.03 max 0.03 max
Aluminum 0.2 max 0.2 max
Titanium 0.6–1.2 0.6–1.0
1
This specification is under the jurisdiction of ASTM Committee B02 on
Molybdenum 2.5–3.5 5.0–6.5
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved June 10, 2003. Published July 2003. Originally
approved in 1964. Last previous edition approved in 1999 as B 423 - 99.
* New designation established in accordance with Practice E 527 and SAE
in Specification B 829.
J 1086, Practice for Numbering Metals and Alloys (UNS).
5.2 If a product (check) analysis is performed by the
2
For ASME Boiler and Pressure Vessel Code applications see related specifica-
purchaser, the material shall conform to the product (check)
tion SB-423 in Section II of that code.
3
Annual Book of ASTM Standards, Vol 02.04. analysis variations of Specification B 829.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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B423–03
TABLE 2 Mechanical Properties of Pipe and Tube
Yield Strength Elongation in
Tensile Strength, 0.2 % Offset, min, 2 in. or 50
Alloy Condition and Size
min, ksi (MPa) ksi (MPa) mm (4D),
min,%
UNS N08825 hot-finished annealed 75 (517) 25 (172) 30
UNS N08825 cold-worked annealed 85 (586) 35 (241) 30
AA A
UNS N08825 hot-forming quality (hot-finished or cold-drawn
annealed)
UNS N08221 cold-finished, annealed 79 (545) 34 (234) 30
A
Hot-forming quality is furnished to chemical requirements and surface inspection only. No mechanical properties are required.
6. Mechanical Properties and Other Requirements 8.3 Hydrostatic—Each piece in
...
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