ASTM B668-05
(Specification)Standard Specification for UNS N08028 Seamless Pipe and Tube
Standard Specification for UNS N08028 Seamless Pipe and Tube
ABSTRACT
This specification covers the standard requirements for UNS N08028 seamless cold-finished or hot-finished pipe and tube intended for general corrosive services. The pipe and tube shall be furnished in the solution-annealed condition and heat treated at a certain range of temperature by subsequent quenching in water or rapidly cooling by other means. Chemical and product analysis shall be conducted on each lot of material as described in a referenced ASTM document and shall conform to the required chemical composition for carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, molybdenum, copper, and iron. The material shall also be subjected to tension test, flaring test, and hydrostatic or nondestructive test to determine its mechanical properties which shall be in conformity with the tensile strength, yield strength, and elongation requirements.
SCOPE
1.1 This specification covers UNS N08028 seamless cold-finished or hot finished pipe and tube intended for general corrosive service. The general requirements are covered in Specification B 829.
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 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 be come familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) 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: B668 – 05
Standard Specification for
1
UNS N08028 Seamless Pipe and Tube
This standard is issued under the fixed designation B668; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 4.1.1 Alloy name or UNS number,
4.1.2 ASTM designation and year of issue,
1.1 This specification covers UNS N08028 seamless cold-
4.1.3 Dimensions:
finished or hot finished pipe and tube intended for general
4.1.3.1 Outside diameter, minimum or average wall thick-
corrosive service. The general requirements are covered in
ness (in inches or millimetres, not gage number), and length,
Specification B829.
4.1.3.2 Standard pipe size, schedule and length,
1.2 The values stated in inch-pound units are to be regarded
4.1.4 Quantity (feet or metres, or number of pieces),
as the standard. The values given in parentheses are for
4.1.5 Optional requirements,
information only.
4.1.6 Certification—State if certification is required,
1.3 This standard does not purport to address all of the
4.1.7 Samples for Product (Check) Analysis—State whether
safety concerns, if any, associated with its use. It is the
samples for product (check) analysis should be furnished, and
responsibility of the user of this standard to be come familiar
4.1.8 Purchaser Inspection—If the purchaser wishes to
with all hazards including those identified in the appropriate
witness tests or inspection of material at the place of manu-
Material Safety Data Sheet (MSDS) for this product/material
facture, the purchase order must so state, indicating which tests
as provided by the manufacturer, to establish appropriate
or inspections are to be witnessed.
safety and health practices, and determine the applicability of
regulatory limitations prior to use.
5. Materials and Manufacture
2. Referenced Documents 5.1 Pipeandtubeshallbefurnishedinthesolution-annealed
2
condition.
2.1 ASTM Standards:
B829 Specification for General Requirements for Nickel
NOTE 1—The recommended heat treatment shall consist of heating the
and Nickel Alloys Seamless Pipe and Tube
material to a temperature of 1975 to 2100°F (1080 to 1150°C) with
subsequent quenching in water or rapidly cooling by other means.
3. General Requirement
5.2 The scale shall be removed by suitable means. When
3.1 Material furnished under this specification shall con-
bright annealed, scale removal operations are not necessary.
form to the applicable requirements of Specification B829
6. Chemical Composition
unless otherwise provided herein.
6.1 The material shall conform to the requirement pre-
4. Ordering Information
scribed in Table 1.
4.1 It is the responsibility of the purchaser to specify all
requirements that are necessary for the safe and satisfactory
performance of material ordered under this specification.
TABLE 1 Chemical Requirements
Examples of such requirements include, but are not limited to,
Element Composition, %
the following:
Carbon, max 0.030
Silicon, max 1.0
Manganese, max 2.50
1
This specification is under the jurisdiction of ASTM Committee B02 on
Phosphorus, max 0.030
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
Sulfur, max 0.030
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Chromium 26.0–28.0
Current edition approved Nov. 1, 2005. Published
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:B 668–00 Designation: B668 – 05
Standard Specification for
1
UNS N08028 Seamless Pipe and Tube
This standard is issued under the fixed designation B668; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1This specification covers UNS N08028 seamless cold-finished or hot finished pipe and tube intended for general corrosive
service. The general requirements are covered in Specification B 829B 829*
1.1 This specification covers UNS N08028 seamless cold-finished or hot finished pipe and tube intended for general corrosive
service. The general requirements are covered in Specification B829.
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 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 be come familiar with all hazards including those identified in the appropriate Material Safety Data
Sheet (MSDS) 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.
2. Referenced Documents
2
2.1 ASTM Standards:
B829 Specification for General Requirements for Nickel and Nickel Alloys Seamless Pipe and Tube
3. General Requirement
3.1 Material furnished under this specification shall conform to the applicable requirements of Specification B 829B829 unless
otherwise provided herein.
4. Ordering Information
4.1Orders for material under this specification shall include the following information:
4.1 It is the responsibility of the purchaser to specify all requirements that are necessary for the safe and satisfactory
performance of material ordered under this specification. Examples of such requirements include, but are not limited to, the
following:
4.1.1 Alloy name or UNS number,
4.1.2 ASTM designation and year of issue,
4.1.3 Dimensions—:
4.1.3.1 Outside diameter, minimum or average wall thickness (in inches or millimetres, not gage number), and length,
4.1.3.2 Standard pipe size, schedule and length,
4.1.4 Quantity (feet or metres, or number of pieces),
4.1.5 Optional requirements,
4.1.6 Certification—State if certification is required,
4.1.7 Samples for Product (Check) Analysis—State whether samples for product (check) analysis should be furnished, and
4.1.8 Purchaser Inspection—If the purchaser wishes to witness tests or inspection of material at the place of manufacture, the
purchase order must so state, indicating which tests or inspections are to be witnessed.
5. Materials and Manufacture
5.1 Pipe and tube shall be furnished in the solution-annealed condition.
1
ThisspecificationisunderthejurisdictionofASTMCommitteeB02onNonferrousMetalsandAlloysandisthedirectresponsibilityofSubcommitteeB02.07onRefined
Nickel and Cobalt and Their Alloys.
Current edition approved May 10, 2000. Published June 2000. Originally published as B 668–80. Last previous edition B 668–99.
Current edition approved Nov. 1, 2005. Published November 2005. Originally approved in 1980. Last previous edition approved in 2000 as B668 – 00. DOI:
10.1520/B0668-05.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
, Vol 02.04.volume information, refer to the standard’s Document Summary page on the ASTM website.
*ASummary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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B668 – 05
NOTE 1—The recommended heat treatment shall consist of heating the material to a temperature of 1975 to 2100°F (1080 to 1150°C) with subsequent
quenching in water or rapidly cooling by other means.
5.2 The scale shall be removed by suitable means. When bright annealed, scale removal operations are not necessary.
6. Chemical Composition
6.1 The material shall conform to the requirement prescribed in Table 1.
TABLE 1 Chemical Requirements
Element Composition, %
Carbon, max 0.030
Silicon, max 1.0
Manganese, max 2.50
Phosphorus, max 0.030
Sulfur, max 0.030
Chromium 26.0–28.0
Nickel 30.0–34.0
Molybd
...
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