ASTM B423-99
(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 B829.
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 – 99
Standard Specification for
Nickel-Iron-Chromium-Molybdenum-Copper Alloy
(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 performance of material ordered under this specification.
Examples of such requirements include, but are not limited to,
1.1 This specification covers nickel-iron-chromium-
the following:
molybdenum-copper alloys (UNS N08825 and N08221)* in
4.1.1 Alloy name or UNS number,
the form of cold-worked and hot-finished seamless pipe and
4.1.2 ASTM designation,
tube intended for general corrosive service. The general
4.1.3 Condition (see Appendix X2),
requirements for pipe and tube are covered in Specification
4.1.4 Finish (see Appendix X2),
B 829.
4.1.5 Dimensions:
1.2 The following precautionary caveat pertains only to the
4.1.5.1 Tube—Specify outside diameter and nominal or
test methods portion, Section 9, of this specification: This
minimum wall,
standard does not purport to address all of the safety concerns,
4.1.5.2 Pipe—Specify standard pipe size and schedule,
if any, associated with its use. It is the responsibility of the user
4.1.5.3 Length—Cut to length or random,
of this standard to establish appropriate safety and health
4.1.6 Quantity—Feet (or metres) or number of pieces,
practices and determine the applicability of regulatory limita-
4.1.7 Hydrostatic Pressure Requirements—Specify test
tions prior to use.
pressure if other than required by 9.1.1,
2. Referenced Documents
4.1.8 Certification— State if certification is required,
4.1.9 Samples for Product (Check) Analysis—State whether
2.1 ASTM Standards:
samples for product (check) analysis should be furnished (see
B 829 Specification for General Requirements for Nickel
5.2),
and Nickel Alloy Seamless Pipe and Tube
4.1.10 Purchaser Inspection—If purchaser wishes to wit-
3. General Requirement
ness tests or inspection of material at place of manufacture, the
purchase order must so state indicating which tests or inspec-
3.1 Material furnished under this specification shall con-
tions are to be witnessed, and
form to the applicable requirements of Specification B 829
4.1.11 Small-Diameter and Light-Wall Tube (Converter
unless otherwise provided herein.
Sizes)—See Appendix X1.
4. Ordering Information
5. Chemical Composition
4.1 It is the responsibility of the purchaser to specify all
5.1 The material shall conform to the composition limits
requirements that are necessary for the safe and satisfactory
specified in Table 1. One test is required for each lot as defined
in Specification B 829.
This specification is under the jurisdiction of ASTM Committee B-2 on
5.2 If a product (check) analysis is performed by the
Nonferrous Metals and Alloysand is the direct responsibility of Subcommittee
purchaser, the material shall conform to the product (check)
B02.07on Refined Nickel and Cobalt and Their Alloys.
analysis variations of Specification B 829.
Current edition approved May 10, 1999. Published July 1999. Originally
published as B 423 – 64 T. Last previous edition B 423 – 95.
6. Mechanical Properties and Other Requirements
* New designation established in accordance with Practice E 527 and SAE
J 1086, Practice for Numbering Metals and Alloys (UNS).
6.1 Tension Test— The material shall conform to the tensile
For ASME Boiler and Pressure Vessel Code applications see related specifica-
properties specified in Table 2. The sampling and specimen
tion SB-423 in Section II of that code.
Annual Book of ASTM Standards, Vol 02.04. preparation are as covered in Specification B 829.
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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.
B423–99
TABLE 1 Chemical Requirements
7.2 Permissible variations for material specified as small-
Element UNS N08825 UNS N08221 diameter and light-wall tube (converter size) shall conform to
the permissible variations prescribed in Table X1.2.
Nickel 38.0–46.0 39.0–46.0
Chromium 19.5–23.5 20.0–22.0
Iron 22.0 min 22.0 min 8. Number of Tests
Manganese 1.0 max 1.0 max
8.1 Chemical Analysis—One test per lot.
Carbon 0.05 max 0.025 max
Copper 1.5–3.0 1.5–3.0
8.2 Tension—One test per lot.
Silicon 0.5 max 0.5 max
8.3 Hydrostatic—Each piece in each lot.
Sulfur 0.03 max 0.03 max
Aluminum 0.2 max 0.2 max
9. Test Methods
Titanium 0.6–1.2 0.6–1.0
Molybdenum 2.5–3.5 5.0–6.5
9.1 Hydrostatic Test—Each pipe or tube with an outside
diameter ⁄8 in. (3 mm) and larger and with wall thickness of
0.015 in. (0.38 mm) and over shall be tested based on
6.1.1 Tensile properties for material specified as small-
allowable fiber stress for material in the condition furnished as
diameter and light-wall tube (converter sizes) shall be as
follows:
prescribed in Table X1.1.
UNS N08825 hot finished, annealed: 16 600 psi (114 MPa)
6.2 Hydrostatic Test— If any pipe or tube shows leaks UNS N08825 cold-worked, annealed: 21 200 psi (146 MPa)
UNS N08221 cold finished, annealed: 19 700 psi (138 MPa)
during hydrostatic testing, it shall be rejected.
9.1.1 When so agreed upon between the manufacturer and
7. Dimensions and Permissible Variations
purchaser, pipe or tube may be tested to 1 ⁄2times the allowable
7.1 Diameter and Wall Thickness—The permissible varia- fiber stress given in 9.1.
tions in the outside diameter and wall thickness shall conform
10. Keywords
to the permissible variations prescribed in Tables 3, 4, and 5 of
Specification B 829. 10.1 N08221; N08825; seamless pipe; seamless tube
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.
B423–99
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.
APPENDIXES
(Nonmandatory Information)
X1. CONVERTER SIZES
X1.1 Small-diameter and light-wall tube in outside diam- should be consulted as to the various outside diameters and
eters 1 ⁄4 in. (31.8 mm) and under may be furnished in the wall thicknesses that may be furnished. Material will have a
conditions listed in Table X1.1 when so specified. The material
...
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