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Standard

ASTM A312/A312M

This specification covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service. Grades TP304H, TP309H, TP309HCb, TP310H,TP310HCb, TP316H, TP321H, TP347H, and TP348H are modifications of Grades TP304, TP309Cb, TP309S, TP310Cb, TP310S, TP316, TP321, TP347, and TP348, and are intended for service at temperatures where creep and stress rupture properties are important


Types ASTM A312 Pipe


ASTM A312 Seamless Pipe
Pipe should be made from stainless steel billet in hot rolling or cold drawn, no any welding process during manufacturing, seamless pipe has better pressure to withstand, annealing solution and pickling finishing condition, applied for high temperature and corrosion environment.
ASTM A312 Welded Pipe
No additional metal using automatic welding process for welded pipe, made from stainless steel strip or plate, both single welding and double welding for option, smail diameter and arge diameter are available, annealing pickling finish.
Heavily Cold-Worked (HCW) Pipe
Pipe shall be made by applying cold working of not less than 35 % reduction in thickness of both wall and weld to a welded pipe prior to the final anneal. No filler shall be used in making the weld. Prior to cold working, the weld shall be 100 % radiographically inspected.


Final Finishing

Solution Annealed & Pickled


Size Range

Nominal Size

OD

Wall Thickness, SCHEDULE

NPS

DN

Mm

5S

10S

40S

STD

80S

1∕8

6

10.3

–

1.24

1.73

1.73

2.41

1∕4

8

13.7

–

1.65

2.24

2.24

3.02

3∕8

10

17.2

–

1.65

2.31

2.31

3.2

1∕2

15

21.3

1.65

2.11

2.77

2.77

3.73

3∕4

20

26.7

1.65

2.11

2.87

2.87

3.91

1

25

33.4

1.65

2.77

3.38

3.38

4.55

1 1∕4

32

42.2

1.65

2.77

3.56

3.56

4.85

1 1∕2

40

48.3

1.65

2.77

3.68

3.68

5.08

2

50

60.3

1.65

2.77

3.91

3.91

5.54

2 1∕2

65

73

2.11

3.05

5.16

5.16

7.01

3

80

88.9

2.11

3.05

5.49

5.49

7.62

3 1∕2

90

101.6

2.11

3.05

5.74

5.74

8.08

4

100

114.3

2.11

3.05

6.02

6.02

8.56

5

125

141.3

2.77

3.4

6.55

6.55

9.53

6

150

168.3

2.77

3.4

7.11

7.11

10.97

8

200

219.1

2.77

3.76

8.18

8.18

12.7

10

250

273.1

3.4

4.19

9.27

9.27

12.7

12

300

323.9

3.96

4.57

9.53

9.53

12.7

14

350

355.6

3.96

4.78

–

9.53

–

16

400

406.4

4.19

4.78

–

9.53

–

18

450

457.2

4.19

4.78

–

9.53

–

20

500

508

4.78

5.54

–

9.53

–

22

550

558.8

4.78

5.54

–

9.53

–

24

600

609.6

5.54

6.35

–

9.53

–

26

650

660.4

–

–

–

9.53

–

28

700

711.2

–

–

–

9.53

–

30

750

762

6.35

7.92

–

9.53

–


Material Grade

American Standard

Austenitic Steel:

TP304,TP304L,TP304H, TP304N, TP310S,TP316,TP316L,TP316Ti,TP316H, TP317,TP317L, TP321, TP321H,TP347, TP347H,904L…

Duplex Steel :

S32101,S32205,S31803,S32304,S32750, S32760

Others:TP405,TP409, TP410, TP430, TP439,...

Europen Standard

1.4301,1.4307,1.4948,1.4541,1.4878,1.4550,1.4401,1.4404,1.4571,1.4438, 1.4841,1.4845,1.4539,1.4162, 1.4462, 1.4362, 1.4410, 1.4501

Russia Standard

08Х17Т,08Х13,12Х13,12Х17,15Х25Т,04Х18Н10,08Х20Н14С2, 08Х18Н12Б,10Х17Н13М2Т,10Х23Н18,08Х18Н10,08Х18Н10Т, 08Х18Н12Т,08Х17Н15М3Т,12Х18Н10Т,12Х18Н12Т,12Х18Н9, 17Х18Н9, 08Х22Н6Т, 06ХН28МДТ


Chemical Composition

Grade

Carbon

Silicon

Manganese

Chromium

Nickel

Molybdenum

Sulfur

Phosphorous

TP304

0,08

1,0

2

18.0 – 20.0

8.0 – 11.0

–

0,03

0,045

TP304L

0,035

1,0

2

18.0 – 20.0

8.0 – 13.0

–

0,03

0,045

TP316

0,08

1,0

2

16.0 – 18.0

10.0 – 14.0

2.00 – 3.00

0,03

0,045

TP316L

0,035

1,0

2

16.0 – 18.0

10.0 – 15.0

2.00 – 3.00

0,03

0,045

TP321

0,08

1,0

2

17.0 – 19.0

9.0 – 12.0

–

0,03

0,045


Mechanical Properties

Steel Grade

Heat Treatment

Temperure Min. º F(º C)

Tensile Strength Ksi (MPa), Min.

Yield Strength Ksi (MPa), Min.

Elongation %, Min

TP304

Solution

1900 (1040)

75(515)

30(205)

35

TP304L

Solution

1900 (1040)

70(485)

25(170)

35

TP304H

Solution

1900 (1040)

75(515)

30(205)

35

TP310S

Solution

1900 (1040)

75(515)

30(205)

35

TP316

Solution

1900(1040)

75(515)

30(205)

35

TP316L

Solution

1900(1040)

70(485)

25(170)

35

TP316H

Solution

1900(1040)

75(515)

30(205)

35

TP316Ti

Solution

1900(1040)

75(515)

30(205)

35

TP321

Solution

1900(1040)

75(515)

30(205)

35

TP321H

Solution

Cold: 2000(1100) Hot: 1925(1050)

75(515)

30(205)

35

TP347

Solution

1900(1040)

75(515)

30(205)

35

TP347H

Solution

Cold: 2000(1100) Hot: 1925(1050)

75(515)

30(205)


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  • No.101 Wanbo 1st Road, Nancun Town, Panyu District, Guangzhou, Guangdong, China
  • 0086-020-84886013，84886093，84886091，84886012
  • sales@finegosteel.com
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