ASTM B515 - 22

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Designation: B515 −22
Standard Speciﬁcation for
Welded Nickel-Iron-Chromium Alloy Tubes
1
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
2
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 pro-
vided 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 accor-
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
3
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,
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 inspec-
tions are to be witnessed, if any.
4. Materials and Manufacture
4.1 Tube shall be made from ﬂat-rolled alloy by an auto-
matic welding process with no addition or ﬁller metal. Subse-
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.
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.
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 April 1, 2022. Published April 2022. Originally
approved in 1970. Last previous edition approved in 2020 as B515 – 20. DOI:
10.1520/B0515-22.
2
New designation established in accordance with ASTM E527 and SAE J1086,
Practice for Numbering Metals and Alloys (UNS).
3
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
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.
1

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 each lot shall be subjected to

a leak test and an electric test as follows:

6.5.2.1 Leak Test—Hydrostatic or pneumatic (air underwa-

ter).

6.5.2.2 Electric Test—Eddy current or ultrasonic.

6.6 The manufacturer shall have the option to test Class 1 or

Class 2 and select the nondestructive test methods, if not

speciﬁed by the purchaser.

7. General Requirements

7.1 Material furnished under this speciﬁcation shall con-

form to the applicable requirements of the current edition of

Speciﬁcation B751 unless otherwise provided herein.

8. Certiﬁcation

8.1 A manufacturer’s certiﬁcation shall be furnished to the

purchaser stating that the material was manufactured, tested,

and inspected in accordance with this speciﬁcation and that test

results on representative samples meet speciﬁcation require-

ments. A report of the test results shall be furnished.

9. Keywords

9.1 UNS N08120; UNS N08800; UNS N08810; UNS

N08811; welded tube

TABLE 1 Chemical Requirements

Element

Composition Limits, %

Alloy

N08120

Alloy

N08800

Alloy

N08810

Alloy

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

Iron remainder 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

Aluminum 0.40 0.15 – 0.60 0.15 – 0.60 0.25 – 0.60

Titanium 0.20 0.15 – 0.60 0.15 – 0.60 0.25 – 0.60

Niobium

0.4 – 0.90 ... ... ...

Molybdenum 2.50 ... ... ...

Phosphorus 0.040 0.045 0.045 0.045

Tungsten 2.50 ... ... ...

Cobalt 3.0 ... ... ...

Nitrogen 0.15 – 0.30 ... ... ...

Boron 0.010 ... ... ...

All values are maximums unless speciﬁed as a minimum or a range is provided.

Iron shall be determined arithmetically by difference.

Alloy UNS N08811: Al + Ti = 0.85 – 1.20.

Columbium and niobium are interchangeable names for the same element and

both names are acceptable for use in B02.07 speciﬁcations.

TABLE 2 Mechanical Property Requirements

Alloy Condition (Temper) Tensile Strength, min,

psi (MPa)

Yield Strength, 0.2 % Offset,

min, psi (MPa)

Elongation in 2 in. or

50 mm, min, %

UNS N08120 annealed 90 000 (621) 40 000 (276) 30

UNS N08800 annealed 75 000 (520) 30 000 (205) 30

UNS N08810 and UNS N08811 annealed 65 000 (450) 25 000 (170) 30

B515 − 22

SUMMARY OF CHANGES

Committee B02 has identiﬁed the location of selected changes to this standard since the last issue (B515 – 20)

that may impact the use of this standard. (Approved April 1, 2022.)

(1) Updated Table 1 to be easier to read; added footnote that all

values are maximums unless speciﬁed as a minimum or a range

is provided; changed “columbium” to “niobium” and added

footnote that Nb and Cb are interchangeable names for the

same element; revised Al and Ti minimum for N08811; added

maximum phosphorus for N08800, N08810, and N08811.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned

in this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk

of infringement of such rights, are entirely their own responsibility.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ﬁve years and

if not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standards

and should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the

responsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you should

make your views known to the ASTM Committee on Standards, at the address shown below.

This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,

United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the above

address or at 610-832-9585 (phone), 610-832-9555 (fax), or service@astm.org (e-mail); or through the ASTM website

(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222

Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http://www.copyright.com/

B515 − 22

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摘要：

ASTM B515 - 22 是美国材料与试验协会发布的关于镍-铁-铬合金、镍-铬-钼-铜合金及镍-铬-钴-钼合金焊接管的标准规范，适用于耐腐蚀、高温及高应力环境中使用的无缝焊接管材。该标准涵盖了从 UNS N06600、N06601、N06625、N08800、N08810、N08811 等常见镍基合金制成的焊接管，规定了化学成分、力学性能、热处理工艺、尺寸公差及无损检测要求。ASTM B515-22 版本更新了材料牌号范围、焊接工艺评定及验收标准，确保产品在化工、石油、核电及航空航天等关键领

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ASTM B515 - 22

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