ASTM A409/A409M-08a - 15.12.2008
 
1. Scope

1.1 This specification covers straight seam or spiral seam electric-fusion-welded, light-wall, austenitic chromium-nickel alloy steel pipe for corrosive or high-temperature service. The sizes covered are NPS 14 to 30 with extra light (Schedule 5S) and light (Schedule 10S) wall thicknesses. Table shows the wall thickness of Schedule 5S and 10S pipe. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification.

1.2 Several grades of alloy steel are covered as indicated in Table 1.

1.3 Optional supplementary requirements are provided. These call for additional tests to be made, and when desired shall be stated in the order, together with the number of such tests required.

1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the 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 nonconformance with the specification. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.

Note 1—The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as nominal diameter, size, and nominal size.

TABLE 1 Chemical Requirements

UNS Designa-
tionsA
 Composition, %
Car-
bon,
max
Man-
ganese,
max
Phos-
phorus,
max
Sulfur,
max
Sili-
con
Nickel
Chromium
Molyb-
denum
Tita-
nium
Colum-
bium
Cerium
Other Elements

TP201

S20100

0.15

5.5–7.5

0.060

0.030

1.00

16.0–18.0

3.5–5.5

. . .

. . .

. . .

. . .

N 0.25

TP201LN

S20153

0.03

6.4–7.5

0.045

0.015

0.75

16.0–17.5

4.0–5.0

. . .

. . .

. . .

. . .

N 0.10–0.25,
Cu 1.00

TP304

S30400

0.08

2.00

0.045

0.030

1.00 max

8.0–11.0

18.0–20.0

. . .

. . .

. . .

. . .

. . .

TP304L

S30403

0.035

2.00

0.045

0.030

1.00 max

8.0–12.0

18.0–20.0

. . .

. . .

. . .

. . .

. . .

TP309Cb

S30940

0.08

2.00

0.045

0.030

1.00 max

12.0–16.0

22.0–24.0

. . .

. . .

. . .

Cb 10 × C min, 1.10 max

TP309S

S30908

0.08

2.00

0.045

0.030

1.00 max

12.0–15.0

22.0–24.0

. . .

. . .

. . .

TP310Cb

S31040

0.08

2.00

0.045

0.030

1.00 max

19.0–22.0

24.0–26.0

. . .

. . .

. . .

Cb 10 × C min, 1.10 max

TP310S

S31008

0.08

2.00

0.045

0.030

1.00 max

19.0–22.0

24.0–26.0

. . .

. . .

. . .

TP316

S31600

0.08

2.00

0.045

0.030

1.00 max

10.0–14.0

16.0–18.0

2.00–3.00

. . .

. . .

. . .

TP316L

S31603

0.035

2.00

0.045

0.030

1.00 max

10.0–14.0

16.0–18.0

2.00–3.00

. . .

. . .

. . .

. . .

TP317

S31700

0.08

2.00

0.045

0.030

1.00 max

11.0–15.0

18.0–20.0

3.0–4.0

. . .

. . .

. . .

...

. . .

S31727

0.030

1.00

0.030

0.030

1.00 max

14.5–16.5

17.5–19.0

3.8–4.5

. . .

. . .

. . .

N 0.15–0.21
Cu 2.8–4.0

. . .

S32053

0.030

1.00

0.030

0.010

1.00 max

24.0–26.0

22.0–24.0

5.0–6.0

. . .

. . .

. . .

N 0.17–0.22

TP321

S32100

0.08

2.00

0.045

0.030

1.00 max

9.00–12.0

17.0–20.0

. . .

B

. . .

. . .

. . .

TP347

S34700

0.08

2.00

0.045

0.030

1.00 max

9.00–12.0

17.0–19.0

. . .

. . .

C

. . .

. . .

TP348

S34800

0.08

2.00

0.045

0.030

1.00 max

9.00–12.0

17.0–19.0

. . .

. . .

D

. . .

. . .

. . .

S31254

0.020

1.00

0.030

0.010

0.80 max

17.5–18.5

19.5–19.5

6.0–6.5

. . .

. . .

. . .

Cu 0.50–1.00
N 0.18–0.22

. . .

S30815

0.05–0.10

0.80

0.040

0.030

1.40–2.00

10.0–12.0

20.0–22.0

. . .

. . .

. . .

0.03–0.08

N 0.14–0.20

. . .

S31725

0.030

2.00

0.045

0.030

1.00 max

13.5–17.5

18.0–20.0

4.0–5.0

. . .

. . .

. . .

N 0.020 max

. . .

S31726

0.030

2.00

0.045

0.030

1.00 max

14.5–17.5

17.0–20.0

4.0–5.0

. . .

. . .

. . .

N 0.10–0.20

. . .

S34565

0.030

5.0–7.0

0.030

0.010

1.00 max

16.0–18.0

23.0–25.0

4.0–5.0

. . .

0.10 max

. . .

N 0.40–0.60

. . .

N08367

0.030

2.00

0.040

0.030

1.00 max

23.5–25.5

20.0–22.0

6.0–7.0

. . .

. . .

. . .

Cu 0.75 max
Ni 0.18–0.25

. . .

S20400

0.030

7.0–9.0

0.45

0.030

1.00 max

1.50–3.00

15.0–17.0

. . .

. . .

. . .

. . .

N 0.15–0.30

A New designation established in accordance with ASTM E 527 and SAE J1086.

B The titanium content shall be not less than 5 times the carbon content and not more than 0.70 %.

C The columbium plus tantalum content shall be not less than 10 times the carbon content and not more than 1.10 %.

D The columbium plus tantalum content shall be not less than 10 times the carbon content and not more than 1.10 %. The tantalum content shall be 0.10 % maximum, CO 0.20 % maximum.

 
2. Referenced Documents

A?5.9

Corrosion-Resisting Chromium and Chromium-Nickel Steel Welding Rods and Bare Electrodes

A?5.4

Corrosion-Resisting Chromium and Chromium-Nickel Steel Covered Welding Electrodes

A?5.30

Consumable Weld Inserts for Gas Tungsten Arc Welding

A?5.22

Flux Cored Arc Welding

Section IX Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two Park Ave., New York, NY 10016-5990, http://www.asme.org.

A262-15(2021)

Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels

A999/A999M-23

Standard Specification for General Requirements for Alloy and Stainless Steel Pipe

A480/A480M-25b

Standard Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip (Includes all amendments and changes 9/10/2025).

A?5.11

Nickel and Nickel-Alloy Covered Welding Electrodes

A?5.14

Nickel and Nickel-Alloy Bare Welding Rods and Electrodes

SAE J1086

Practice for Numbering Metals and Alloys (UNS) Available from Society of Automotive Engineers (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http://www.sae.org.

E527-23

Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)