ASTM B704-23
(Specification)Standard Specification for Welded Nickel Alloy Tubes
Standard Specification for Welded Nickel Alloy Tubes
ABSTRACT
This specification covers welded tubes made of UNS N06625, UNS N06219 and UNS N08825 alloys for use in boilers, heat exchangers and condensers for general corrosion prevention in either low or high-temperature environments. This standard contains information on manufacturing, chemical composition, mechanical properties and dimensional requirements for the welded tubes.
SCOPE
1.1 This specification covers welded UNS N06219, UNS N06625, UNS N08642, UNS N08825, and UNS N08827 nickel alloy boiler, heat exchanger, and condenser tubes for general corrosion resisting and low or high-temperature service.
1.2 This specification covers tubes 1/8 in. to 5 in. (3.18 mm to 127 mm), inclusive, in outside diameter and 0.015 in. to 0.500 in. (0.38 mm to 12.70 mm), inclusive, in wall thickness. Specification B751 lists the dimensional requirements of these sizes. Tubes having other dimensions may be furnished provided such tubing complies with all other requirements of this specification.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 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 (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: B704 − 23
Standard Specification for
1
Welded Nickel Alloy Tubes
This standard is issued under the fixed designation B704; 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* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This specification covers welded UNS N06219, UNS
B751 Specification for General Requirements for Nickel and
N06625, UNS N08642, UNS N08825, and UNS N08827
Nickel Alloy Welded Tube
nickel alloy boiler, heat exchanger, and condenser tubes for
B899 Terminology Relating to Non-ferrous Metals and Al-
general corrosion resisting and low or high-temperature ser-
loys
vice.
E8/E8M Test Methods for Tension Testing of Metallic Ma-
1
1.2 This specification covers tubes ⁄8 in. to 5 in. (3.18 mm
terials
to 127 mm), inclusive, in outside diameter and 0.015 in. to
3. Terminology
0.500 in. (0.38 mm to 12.70 mm), inclusive, in wall thickness.
Specification B751 lists the dimensional requirements of these
3.1 Definitions:
sizes. Tubes having other dimensions may be furnished pro-
3.1.1 For definitions of terms used in this specification, refer
vided such tubing complies with all other requirements of this
to Terminology B899.
specification.
4. Ordering Information
1.3 The values stated in inch-pound units are to be regarded
4.1 Orders for material to this specification should include
as standard. The values given in parentheses are mathematical
the following information:
conversions to SI units that are provided for information only
4.1.1 Quantity (feet or number of lengths),
and are not considered standard.
4.1.2 UNS number,
1.4 This standard does not purport to address all of the 4.1.3 Size (outsize diameter, minimum or average wall
safety concerns, if any, associated with its use. It is the thickness),
responsibility of the user of this standard to become familiar 4.1.4 Length (random or specific),
with all hazards including those identified in the appropriate 4.1.5 Class, and
4.1.6 Grade if UNS N06625 is specified. If neither grade of
Material Safety Data Sheet (MSDS) for this product/material
as provided by the manufacturer, to establish appropriate N06625 is specified, grade 1 will be supplied.
4.1.7 ASTM designation.
safety, health, and environmental practices, and determine the
4.1.8 Product Analysis—State if required.
applicability of regulatory limitations prior to use.
4.1.9 Purchaser Inspection—State which tests or inspec-
1.5 This international standard was developed in accor-
tions are to be witnessed, if any.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
5. Materials and Manufacture
Development of International Standards, Guides and Recom-
5.1 Tube shall be made from flat-rolled alloy by an auto-
mendations issued by the World Trade Organization Technical
matic welding process with no addition or filler metal. Subse-
Barriers to Trade (TBT) Committee.
quent to welding and prior to final annealing, the material shall
be cold-worked in either the weld metal only or both weld and
base metal.
1
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
2
B02.07 on Refined Nickel and Cobalt and Their Alloys. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Nov. 1, 2023. Published November 2023. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1982. Last previous edition approved in 2019 as B704 – 19. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/B0704-23. the ASTM website.
*A Summary 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
1
---------------------- Page: 1 ----------------------
B704 − 23
TABLE 2 Mechanical Property Requirements
5.2 Tube shall be furnished with oxide removed. When
bright annealing is used, descaling is not necessary. Elonga-
A
Tensile tion in 2
Yield Strength
Alloy Grade Strength 0.2 % Offset, in. or 50
6. Chemical Composition
min, psi (MPa)
min, psi (MPa) mm, min,
%
6.1 The material shall conform to the composition limits
UNS N06625 1 (annealed) 120 000 (827) 60 000 (414) 30
specified in Table 1. One test is required for each lot as defined
UNS N06625 2 (solution 100 000 (690) 40 000
...
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: B704 − 19 B704 − 23
Standard Specification for
1
Welded Nickel Alloy Tubes
This standard is issued under the fixed designation B704; 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*
1.1 This specification covers welded UNS N06219, UNS N06625, UNS N08642, UNS N08825, and UNS N08827 nickel alloy
boiler, heat exchanger, and condenser tubes for general corrosion resisting and low or high-temperature service.
1
1.2 This specification covers tubes ⁄8 in. to 5 in. (3.18(3.18 mm to 127 mm), inclusive, in outside diameter and 0.0150.015 in. to
0.500 in. (0.38(0.38 mm to 12.70 mm), inclusive, in wall thickness. Specification B751 lists the dimensional requirements of these
sizes. Tubes having other dimensions may be furnished provided such tubing complies with all other requirements of this
specification.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.4 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 (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental
practices, and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
B751 Specification for General Requirements for Nickel and Nickel Alloy Welded Tube
B899 Terminology Relating to Non-ferrous Metals and Alloys
E8E8/E8M Test Methods for Tension Testing of Metallic Materials [Metric] E0008_E0008M
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this specification, refer to Terminology B899.
1
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.
Current edition approved Nov. 1, 2019Nov. 1, 2023. Published November 2019November 2023. Originally approved in 1982. Last previous edition approved in 20142019
as B704 – 03 (2014).B704 – 19. DOI: 10.1520/B0704-19.10.1520/B0704-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary 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
1
---------------------- Page: 1 ----------------------
B704 − 23
4. Ordering Information
4.1 Orders for material to this specification should include the following information:
4.1.1 Quantity (feet or number of lengths),
4.1.2 UNS number,
4.1.3 Size (outsize diameter, minimum or average wall thickness),
4.1.4 Length (random or specific),
4.1.5 Class, and
4.1.6 Grade if UNS N06625 is specified. If neither grade of N06625 is specified, grade 1 will be supplied.
4.1.7 ASTM designation.
4.1.8 Product Analysis—State if required.
4.1.9 Purchaser Inspection—State which tests or inspections are to be witnessed, if any.
5. Materials and Manufacture
5.1 Tube shall be made from flat-rolled alloy by an automatic welding process with no addition or filler metal. Subsequent to
welding and prior to final annealing, the material shall be cold-worked in either the weld metal only or both weld and base metal.
5.2 Tube shall be furnished with oxide removed. When bright annealing is used, descaling is not necessary.
6. Chemical Composition
6.1 The material shall conform to the composition limits specified in Table 1. One test is required for each lot as defined in
Specification B751.
6.2 If a product analysis is per
...
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