ASTM B515-22
(Specification)Standard Specification for Welded Nickel-Iron-Chromium Alloy Tubes
Standard Specification for Welded Nickel-Iron-Chromium Alloy Tubes
ABSTRACT
This specification covers welded UNS N08120, UNS N08800, UNS N08810 and UNS N08811 alloy boiler, heat exchanger, and condenser tubes for general corrosion resisting and low or high-temperature service. Tube shall be made from flat-rolled alloy by an automatic welding process with no addition or filler metal, shall be cold-worked subsequent to welding and prior to final annealing, and shall be furnished with oxide removed. When bright annealing is used, descaling is not necessary. The material shall conform to the chemical composition limits prescribed for nickel, chromium, iron, manganese, carbon, copper, silicon, sulfur, aluminum, titanium, columbium, molybdenum, phosphorus, tungsten, cobalt, nitrogen, and boron, as determined by chemical analysis, and to the specified mechanical properties including tensile strength, yield strength, and elongation. Annealed alloys shall conform to the the prescribed grain size. The following tests shall be performed: (1) flattening test, (2) flange test, (3) Class 1 nondestructive test by one of the following: hydrostatic, pneumatic (air underwater), eddy current, or ultrasonic test, and (4) Class 2 nondestructive test by leak and electric (eddy current, or ultrasonic test) test.
SCOPE
1.1 This specification covers welded UNS N08120, UNS N08800, UNS N08810 and UNS N088112 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 to 5 in. (3.18 to 127 mm), inclusive, in outside diameter and 0.015 to 0.500 in. (0.38 to 12.70 mm), inclusive, in wall thickness. Table 2 of 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.
General Information
- Status
- Published
- Publication Date
- 31-Mar-2022
- Technical Committee
- B02 - Nonferrous Metals and Alloys
- Drafting Committee
- B02.07 - Refined Nickel and Cobalt and Their Alloys
Relations
- Effective Date
- 01-Apr-2019
- Effective Date
- 01-Nov-2018
- Effective Date
- 01-Feb-2013
- Effective Date
- 01-Nov-2008
- Effective Date
- 10-Jun-2003
- Effective Date
- 10-Apr-2003
- Effective Date
- 10-Oct-2002
- Effective Date
- 10-Nov-2001
- Effective Date
- 10-Nov-2001
- Effective Date
- 10-Mar-1997
Overview
ASTM B515-22: Standard Specification for Welded Nickel-Iron-Chromium Alloy Tubes establishes requirements for welded tubes fabricated from specific nickel-iron-chromium alloys, intended for corrosion resistance and performance in low, elevated, and high-temperature service. This standard covers the production and supply of welded tubes made from alloys UNS N08120, N08800, N08810, and N08811. These alloys are widely used in demanding environments such as boilers, heat exchangers, and condensers, where durability, structural integrity, and resistance to oxidizing conditions are critical.
ASTM B515-22 outlines essential technical criteria like dimensional tolerances, chemical composition, mechanical properties, grain size, manufacturing method, and nondestructive testing. Conformance with this specification helps ensure consistency, safety, and reliability in industrial applications where nickel alloy tubing is specified.
Key Topics
Material Grades: The standard applies to welded tubes made from the following alloys:
- UNS N08120
- UNS N08800
- UNS N08810
- UNS N08811
Product Dimensions:
- Outside diameter: 1/8 to 5 inches (3.18 to 127 mm)
- Wall thickness: 0.015 to 0.500 inches (0.38 to 12.70 mm)
- Custom dimensions allowed if all requirements are met
Manufacturing & Processing:
- Tubes are made from flat-rolled alloy using automatic welding, with no filler metal.
- Cold-worked after welding, prior to final annealing.
- Finished with oxide removal; bright annealing negates the need for descaling.
Chemical Composition:
- Strict limits for elements including nickel, chromium, iron, carbon, manganese, copper, silicon, sulfur, aluminum, titanium, columbium (niobium), molybdenum, phosphorus, tungsten, cobalt, nitrogen, and boron.
- Ongoing product analysis may be conducted to ensure compliance.
Mechanical Properties:
- Minimum tensile strength and yield strength defined for each alloy grade.
- Elongation requirements for ductility and formability.
- Grain size criteria specified for certain alloys.
Testing Requirements:
- Destructive tests: Flattening and flange tests assess tube integrity.
- Nondestructive tests:
- Class 1: Hydrostatic, pneumatic (air underwater), eddy current, or ultrasonic test.
- Class 2: Leak test (hydrostatic or pneumatic) and an electric test (eddy current or ultrasonic).
Certification:
- Manufacturers must supply documentation verifying tubes meet all specification requirements.
Applications
Welded nickel-iron-chromium alloy tubes covered by ASTM B515-22 are engineered for use in:
- Power generation: Boiler tubes in high-pressure and high-temperature steam plants
- Chemical and petrochemical industries: Heat exchangers and condenser tubing subject to corrosive process streams
- Refineries: Process tubing in environments with aggressive chemical exposure
- Industrial plants: High-temperature service lines and components exposed to corrosive atmospheres
This standard is fundamental for engineers, procurement specialists, and quality assurance teams specifying nickel alloy welded tubes for environments where long-term performance and compliance with recognized international standards are essential.
Related Standards
- ASTM B751: Specification for general requirements for nickel and nickel alloy welded tube
- ASTM E527: Practice for numbering metals and alloys in the Unified Numbering System (UNS)
Additional references or harmonized standards may be relevant when implementing welded nickel-iron-chromium alloy tubes in regulated industries, ensuring compatibility and regulatory compliance across projects.
Keywords: ASTM B515-22, nickel-iron-chromium alloy, welded tube, UNS N08120, UNS N08800, UNS N08810, UNS N08811, heat exchanger tube standard, corrosion resistant tubing, boiler tube standards, ASTM nickel alloy specification
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Frequently Asked Questions
ASTM B515-22 is a technical specification published by ASTM International. Its full title is "Standard Specification for Welded Nickel-Iron-Chromium Alloy Tubes". This standard covers: ABSTRACT This specification covers welded UNS N08120, UNS N08800, UNS N08810 and UNS N08811 alloy boiler, heat exchanger, and condenser tubes for general corrosion resisting and low or high-temperature service. Tube shall be made from flat-rolled alloy by an automatic welding process with no addition or filler metal, shall be cold-worked subsequent to welding and prior to final annealing, and shall be furnished with oxide removed. When bright annealing is used, descaling is not necessary. The material shall conform to the chemical composition limits prescribed for nickel, chromium, iron, manganese, carbon, copper, silicon, sulfur, aluminum, titanium, columbium, molybdenum, phosphorus, tungsten, cobalt, nitrogen, and boron, as determined by chemical analysis, and to the specified mechanical properties including tensile strength, yield strength, and elongation. Annealed alloys shall conform to the the prescribed grain size. The following tests shall be performed: (1) flattening test, (2) flange test, (3) Class 1 nondestructive test by one of the following: hydrostatic, pneumatic (air underwater), eddy current, or ultrasonic test, and (4) Class 2 nondestructive test by leak and electric (eddy current, or ultrasonic test) test. SCOPE 1.1 This specification covers welded UNS N08120, UNS N08800, UNS N08810 and UNS N088112 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 to 5 in. (3.18 to 127 mm), inclusive, in outside diameter and 0.015 to 0.500 in. (0.38 to 12.70 mm), inclusive, in wall thickness. Table 2 of 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.
ABSTRACT This specification covers welded UNS N08120, UNS N08800, UNS N08810 and UNS N08811 alloy boiler, heat exchanger, and condenser tubes for general corrosion resisting and low or high-temperature service. Tube shall be made from flat-rolled alloy by an automatic welding process with no addition or filler metal, shall be cold-worked subsequent to welding and prior to final annealing, and shall be furnished with oxide removed. When bright annealing is used, descaling is not necessary. The material shall conform to the chemical composition limits prescribed for nickel, chromium, iron, manganese, carbon, copper, silicon, sulfur, aluminum, titanium, columbium, molybdenum, phosphorus, tungsten, cobalt, nitrogen, and boron, as determined by chemical analysis, and to the specified mechanical properties including tensile strength, yield strength, and elongation. Annealed alloys shall conform to the the prescribed grain size. The following tests shall be performed: (1) flattening test, (2) flange test, (3) Class 1 nondestructive test by one of the following: hydrostatic, pneumatic (air underwater), eddy current, or ultrasonic test, and (4) Class 2 nondestructive test by leak and electric (eddy current, or ultrasonic test) test. SCOPE 1.1 This specification covers welded UNS N08120, UNS N08800, UNS N08810 and UNS N088112 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 to 5 in. (3.18 to 127 mm), inclusive, in outside diameter and 0.015 to 0.500 in. (0.38 to 12.70 mm), inclusive, in wall thickness. Table 2 of 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.
ASTM B515-22 is classified under the following ICS (International Classification for Standards) categories: 23.040.15 - Non-ferrous metal pipes. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM B515-22 has the following relationships with other standards: It is inter standard links to ASTM B751-19, ASTM B751-08(2018), ASTM B751-08(2013), ASTM B751-08, ASTM B751-03, ASTM E527-83(2003), ASTM B751-02, ASTM B751-01, ASTM B751-99, ASTM E527-83(1997)e1. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM B515-22 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
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:B515 −22
Standard Specification for
Welded Nickel-Iron-Chromium Alloy Tubes
This standard is issued under the fixed designation B515; 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
1.1 This specification covers welded UNS N08120, UNS 2.1 ASTM Standards:
N08800, UNS N08810 and UNS N08811 alloy boiler, heat B751 Specification for General Requirements for Nickel and
exchanger, and condenser tubes for general corrosion resisting Nickel Alloy Welded Tube
and low or high-temperature service. E527 Practice for Numbering Metals and Alloys in the
Unified Numbering System (UNS)
1.2 This specification covers tubes ⁄8 to 5 in. (3.18 to
127 mm), inclusive, in outside diameter and 0.015 to 0.500 in.
3. Ordering Information
(0.38 to 12.70 mm), inclusive, in wall thickness. Table 2 of
3.1 Orders for material to this specification should include
Specification B751 lists the dimensional requirements of these
the following information:
sizes. Tubes having other dimensions may be furnished pro-
3.1.1 Quantity (feet or number of lengths),
vided such tubing complies with all other requirements of this
3.1.2 UNS Number,
specification.
3.1.3 Size (outside diameter minimum or average wall
1.3 The values stated in inch-pound units are to be regarded
thickness),
as standard. The values given in parentheses are mathematical
3.1.4 Length (random or specific),
conversions to SI units that are provided for information only
3.1.5 Class,
and are not considered standard.
3.1.6 ASTM Designation,
1.4 This standard does not purport to address all of the
3.1.7 Product Analysis—State if required,
safety concerns, if any, associated with its use. It is the
3.1.8 Purchaser Inspection—State which tests or inspec-
responsibility of the user of this standard to become familiar
tions are to be witnessed, if any.
with all hazards including those identified in the appropriate
4. Materials and Manufacture
Material Safety Data Sheet (MSDS) for this product/material
as provided by the manufacturer, to establish appropriate
4.1 Tube shall be made from flat-rolled alloy by an auto-
safety, health, and environmental practices, and determine the
matic welding process with no addition or filler metal. Subse-
applicability of regulatory limitations prior to use.
quent to welding and prior to final annealing, the material shall
1.5 This international standard was developed in accor-
be cold-worked in either the weld metal only or both weld and
dance with internationally recognized principles on standard-
base metal.
ization established in the Decision on Principles for the
4.2 Tube shall be furnished with oxide removed. When
Development of International Standards, Guides and Recom-
bright annealing is used, descaling is not necessary.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
5. Chemical Composition
5.1 The material shall conform to the composition limits
specified in Table 1. One test is required for each lot as defined
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee in Specification B751.
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved April 1, 2022. Published April 2022. Originally
approved in 1970. Last previous edition approved in 2020 as B515 – 20. DOI: For referenced ASTM standards, visit the ASTM website, www.astm.org, or
10.1520/B0515-22. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
New designation established in accordance with ASTM E527 and SAE J1086, Standards volume information, refer to the standard’s Document Summary page on
Practice for Numbering Metals and Alloys (UNS). 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
B515−22
A
TABLE 1 Chemical Requirements
Composition Limits, %
Element
Alloy Alloy Alloy Alloy
N08120 N08800 N08810 N08811
Nickel 35.0 – 39.0 30.0 – 35.0 30.0 – 35.0 30.0 – 35.0
Chromium 23.0 – 27.0 19.0 – 23.0 19.0 – 23.0 19.0 – 23.0
B B B
Iron remainder 39.5 min 39.5 min 39.5 min
Manganese 1.5 1.5 1.5 1.5
Carbon 0.02 – 0.10 0.10 0.05 – 0.10 0.06 – 0.10
Copper 0.50 0.75 0.75 0.75
Silicon 1.0 1.0 1.0 1.0
Sulfur 0.03 0.015 0.015 0.015
C
Aluminum 0.40 0.15 – 0.60 0.15 – 0.60
...
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: B515 − 20 B515 − 22
Standard Specification for
Welded Nickel-Iron-Chromium Alloy Tubes
This standard is issued under the fixed designation B515; 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 N08120, UNS N08800, UNS N08810 and UNS N08811 alloy boiler, heat exchanger,
and condenser tubes for general corrosion resisting and low or high-temperature service.
1.2 This specification covers tubes ⁄8 to 5 in. (3.18 to 127 mm), 127 mm), inclusive, in outside diameter and 0.015 to 0.500 in.
(0.38 to 12.70 mm), inclusive, in wall thickness. Table 2 of 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
2.1 ASTM Standards:
B751 Specification for General Requirements for Nickel and Nickel Alloy Welded Tube
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
3. Ordering Information
3.1 Orders for material to this specification should include the following information:
3.1.1 Quantity (feet or number of lengths),
3.1.2 UNS Number,
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 Oct. 1, 2020April 1, 2022. Published October 2020April 2022. Originally approved in 1970. Last previous edition approved in 20192020 as
B515 – 19.B515 – 20. DOI: 10.1520/B0515-20.10.1520/B0515-22.
New designation established in accordance with ASTM E527 and SAE J1086, Practice for Numbering Metals and Alloys (UNS).
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
B515 − 22
3.1.3 Size (outside diameter minimum or average wall thickness),
3.1.4 Length (random or specific),
3.1.5 Class,
3.1.6 ASTM Designation,
3.1.7 Product Analysis—State if required,
3.1.8 Purchaser Inspection—State which tests or inspections are to be witnessed, if any.
4. Materials and Manufacture
4.1 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.
4.2 Tube shall be furnished with oxide removed. When bright annealing is used, descaling is not necessary.
5. Chemical Composition
5.1 The material shall conform to the composition limits specified in Table 1. One test is required for each lot as defined in
Specification B751.
5.2 If a product analysis is performed, it shall meet the chemistry limits prescribed in Table 1, subject to the analysis tolerances
specified in Table 6 of Specification B751.
6. Mechanical and Other Properties
6.1 Mechanical Properties—The material shall conform to the mechanical property requirements specified in Table 2. One test is
required for each lot as defined in Specification B751.
6.2 Grain Size—A transverse sample representing the full-wall thickness of annealed alloys UNS N08120, N08810, and N08811
shall conform to an average grain size of ASTM No. 5 or coarser.
6.3 Flattening Test—A flattening test shall be made on each end of one tube per lot. Superficial ruptures resulting from surface
imperfections shall not be cause for rejection.
6.4 Flange Test—A flange test shall be made on each end of one tube per lot.
6.5 Nondestructive Test Requirements:
6.5.1 Class 1—Each piece of each lot shall be subject to one of the following four tests: hydrostatic, pneumatic (air underwater),
eddy current, or ultrasonic.
6.5.2 Class 2—Each piece in e
...
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