ASTM A269 - A 269M - 25 通用无缝和焊接奥氏体不锈钢管标准规范

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Designation: A269/A269M −25
Standard Speciﬁcation for
Seamless and Welded Austenitic Stainless Steel Tubing for
General Service
1
This standard is issued under the ﬁxed designation A269/A269M; 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 grades of nominal-wall-
thickness, stainless steel tubing for general corrosion-resisting
and low- or high-temperature service, as designated in Table 1.
1.2 The tubing sizes and thicknesses usually furnished to
this speciﬁcation are
1
⁄
4
in. [6.4 mm] in inside diameter and
larger and 0.020 in. [0.51 mm] in nominal wall-thickness and
heavier.
1.3 Mechanical property requirements do not apply to
tubing smaller than
1
⁄
8
in. [3.2 mm] in inside diameter or 0.015
in. [0.38 mm] in thickness.
NOTE 1—Additional testing requirements may apply for use in ASME
B31.3 applications.
1.4 Optional supplementary requirements are provided and,
when one or more of these are desired, each shall be so stated
in the order.
1.5 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. Within the text, SI
units are shown in brackets. The values stated in each system
may not be exact equivalents; therefore, each system shall be
used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
The inch-pound units shall apply unless the “M” designation of
this speciﬁcation is speciﬁed in the order.
1.6 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:
2
A262 Practices for Detecting Susceptibility to Intergranular
Attack in Austenitic Stainless Steels
A480/A480M Speciﬁcation for General Requirements for
Flat-Rolled Stainless and Heat-Resisting Steel Plate,
Sheet, and Strip
A632 Speciﬁcation for Seamless and Welded Austenitic
Stainless Steel Tubing (Small-Diameter) for General Ser-
vice
A1016/A1016M Speciﬁcation for General Requirements for
Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless
Steel Tubes
E112 Test Methods for Determining Average Grain Size
E527 Practice for Numbering Metals and Alloys in the
Uniﬁed Numbering System (UNS)
2.2 ASME Piping Code:
ASME B31.3 Process Piping
3
2.3 Other Standard:
SAE J1086 Practice for Numbering Metals and Alloys
(UNS)
4
3. Ordering Information
3.1 Orders for material under this speciﬁcation should
include the following, as required, to describe the desired
material adequately:
3.1.1 Quantity (feet, metres, or number of lengths),
3.1.2 Name of material (seamless or welded tubes),
3.1.3 Grade (Table 1),
3.1.4 Size (outside diameter and nominal wall thickness),
1
This speciﬁcation is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.10 on Stainless and Alloy Steel Tubular Products.
Current edition approved Sept. 1, 2025. Published October 2025. Originally
approved in 1944. Last previous edition approved in 2024 as A269/A269M – 24.
DOI: 10.1520/A0269_A0269M-25.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at www.astm.org/contact. For Annual Book of
ASTM Standards volume information, refer to the standard’s Document Summary
page on the ASTM website.
3
Available from American Society of Mechanical Engineers (ASME), ASME
International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
www.asme.org.
4
Available from Society of Automotive Engineers (SAE), 400 Commonwealth
Dr., Warrendale, PA 15096-0001, http://www.sae.org.
*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

TABLE 1 Chemical Requirements

Grade

Composition, %

201

201LN

304

304L ... TP

304LN

316

316L

316LN

...

317 ... TP

321

347

348

XM-10

XM-11

XM-15

XM-19

UNS

Designation

S20100 S20153 S30400 S30403 S30416 S30453 S31600 31603 S31653 S31655 S31700 S31730 S32100 S34700 S34800 S21900 S21904 S38100 S20910

Carbon 0.15 0.03 0.08 0.035

0.030 0.035

0.08 0.035

0.035

0.030 0.08 0.030 0.08 0.08 0.08 0.08 0.04 0.08 0.06

Manganese 5.5–

7.5

6.4–

7.5

2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 8.00–

10.00

8.00–

10.00

2.00 4.0–

6.0

Phosphorus 0.060 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.040 0.045 0.045 0.045 0.045 0.045 0.030 0.045

Sulfur 0.030 0.015 0.030 0.030 0.015 0.030 0.030 0.030 0.030 0.015 0.030 0.010 0.030 0.030 0.030 0.030 0.030 0.030 0.030

Silicon 1.00 0.75 1.00 1.00 0.80–

2.00

1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.50–

2.50

1.00

Nickel 3.5–

5.5

4.0–

5.0

8.0–

11.0

8.0–

12.0

9.0–

11.0

8.0–

11.0

10.0–

14.0

10.0–

15.0

10.0–

13.0

8.0–

9.5

11.0–

15.0

15.0–

16.5

9.0–

12.0

9.0–

12.0

9.0–

12.0

5.5–

7.5

5.5–

7.5

17.5–

18.5

11.5–

13.5

Chromium 16.0–

18.0

16.0–

17.5

18.0–

20.0

18.0–

20.0

17.5–

19.5

18.0–

20.0

16.0–

18.0

16.0–

18.0

16.0–

18.0

19.5–

21.5

18.0–

20.0

17.0–

19.0

17.0–

19.0

17.0–

19.0

17.0–

19.0

19.0–

21.5

19.0–

21.5

17.0–

19.0

20.5–

23.5

Molybdenum . . . . . . . . . . . . 0.40–

0.80

. . . 2.00–

3.00

2.00–

3.00

2.00–

3.00

0.5–

1.5

3.0–

4.0

3.0–4.0 . . . . . . . . . . . . . . . . . . 1.50–

3.00

Titanium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

... ... ... ... ... ...

Niobium

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 × C

min

1.10

max

. . . . . . . . . 0.10–

0.30

Tantalum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.10 . . . . . . . . . . . .

Nitrogen

0.25 0.10–

0.25

. . . . . . 0.10 0.10–

0.16

. . . . . . 0.10–

0.16

0.14–

0.25

. . . 0.45 . . . . . . . . . 0.15–

0.40

0.15–

0.40

. . . 0.20–

0.40

Vanadium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.10–

0.30

Copper . . . 1.00 . . . . . . . . . . . . . . . . . . . . . 1.00 . . . 4.0–5.0 . . . . . . . . . . . . . . . . . . . . .

Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Co 0.20

max

... ... ... ...

A269/A269M − 25

Grade

Composition, %

XM-29 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...

UNS

Designation

S24000 S31254 S31266 S31725 S31726 S31727 S32053 S30600

S32654 S34565 S35045 S35030 N08367 N08925 N08926 N08904 N08028 N08029 N08330 N08332

Carbon 0.08 0.020 0.030

max

0.035 0.035 0.030 0.030 0.018 0.020 0.030 0.06–

0.10

0.05–

0.10

0.030 0.020 0.020 0.020 0.030 0.020 0.08 0.05–

0.10

Manganese 11.5–

14.5

1.00 2.00–

4.00

2.00 2.00 1.00 1.00 2.0 2.0–

4.0

5.0–

7.0

1.50 1.50 2.00 1.00 2.00 2.00 2.50 2.0 2.00 2.00

Phosphorus 0.060 0.030 0.035 0.045 0.045 0.030 0.030 0.020 0.030 0.030 0.045 0.030 0.040 0.045 0.030 0.040 0.030 0.025 0.03 0.03

Sulfur 0.030 0.015 0.020 0.030 0.030 0.030 0.010 0.020 0.005 0.010 0.015 0.015 0.030 0.030 0.010 0.030 0.030 0.015 0.03 0.03

Silicon 1.00 0.80 1.00 1.00 1.00 1.00 1.00 3.7–

4.3

0.50 1.00 1.00 0.50–

2.0

1.00 0.50 0.50 1.00 1.0 0.6 0.75–

1.50

0.75–

1.50

Nickel 2.3–

3.7

17.5–

18.5

21.0–

24.0

13.5–

17.5

14.5–

17.5

14.5–

16.5

24.0–

26.0

14.0–

15.5

21.0–

23.0

16.0–

18.0

32.0–

37.0

22.5–

27.5

23.5–

25.5

24.0–

26.0

24.0–

26.0

23.0–

28.0

30.0–

34.0

30.0–

34.0

34.0–

37.0

34.0–

37.0

Chromium 17.0–

19.0

19.5–

20.5

23.0–

25.0

18.0–

20.0

17.0–

20.0

17.5–

19.0

22.0–

24.0

17.0–

18.5

24.0–

25.0

23.0–

25.0

25.0–

29.0

18.5–

22.5

20.0–

22.0

19.0–

21.0

19.0–

21.0

19.0–

23.0

26.0–

28.0

26.0–

28.0

17.0–

20.0

17.0–

20.0

Molybdenum ... 6.0–

6.5

5.2–

6.2

4.0–

5.0

4.0–

5.0

3.8–

4.5

5.0–

6.0

0.20

max

7.0–

8.0

4.0–

5.0

. . . 6.0–

7.0

6.0–

7.0

6.0–

7.0

4.0–

5.0

3.0–

4.0

4.0–

5.0

... ...

Titanium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.15–

0.60

... ... ... ... ... ... ... ... ...

Niobium

. . . . . . . . . . . . . . . . . . . . . . . . . . . 0.10

max

. . . 0.25–

0.75

... ... ... ... ... ... ... ...

Tantalum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Nitrogen

0.20–

0.40

0.18–

0.25

0.35–

0.60

0.20

max

0.10–

0.20

0.15–

0.21

0.17–

0.22

0.45–

0.55

0.40–

0.60

. . . 0.05–

0.15

0.18–

0.25

0.10–

0.20

0.15–

0.25

0.10

max

... ... ... ...

Vanadium ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...

Copper . . . 0.50–

1.00

1.00–

2.50

. . . . . . 2.8–

4.0

. . . 0.50

max

0.30–

0.60

. . . 0.75 2.5–

3.5

0.75

max

0.80–

1.50

0.50–

1.50

1.00–

2.00

0.6–

1.4

0.6–

1.4

1.00 1.00

Others . . . . . . W

1.50–

2.50

... ... ... ... ... ... ... Al

0.15–

0.60

... ... ... ... ... ... ... Pb

0.005

0.025

0.005

0.025

New designation established in accordance with Practice E527 and SAE J1086.

For small diameter or thin walls, or both, where many drawing passes are required, a carbon maximum of 0.040 % is necessary in grades TP 304L, TP 304LN, 316L and 316LN. Small outside diameter tubes are deﬁned

as those with less than 0.500 in. [12.7 mm] in outside diameter and light walls are those less than 0.049 in. [1.2 mm] in minimum wall thickness.

Maximum, unless otherwise indicated. Where ellipses (. . .) appear in this table, there are no requirements and analysis for the element need not be determined or reported.

Grade TP 321 shall have a titanium content of not less than ﬁve times the sum of the carbon and nitrogen content and not more than 0.70 %.

Grade TP 348 shall have a columbium plus tantalum content of not less than ten times the carbon content and not more than 1.10 %.

The method of analysis for nitrogen shall be a matter of agreement between the purchaser and manufacturer.

The terms Niobium (Nb) and Columbium (Cb) are alternative names for the same element.

A269/A269M − 25

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摘要：

本页面详细介绍了 ASTM A269 / A269M-25 标准规范，涵盖通用无缝和焊接奥氏体不锈钢管的技术要求、尺寸公差、机械性能、热处理工艺及检验方法。该标准适用于在低温、高温或腐蚀性环境下使用的管道系统，包括食品加工、化工、石油、天然气及医疗设备等关键领域。通过阅读此内容，用户可以了解最新版标准的更新要点、材料等级（如 304、304L、316、316L 等）的适用性、焊接与无缝管材的差异，以及如何正确选择符合规范的不锈钢管材以满足工程设计与采购需求。无论您是工程师、采购员还是质检人员，本

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