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TP321 Stainless Tubes (ASTM A312/ ASME SA312)

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TP321 Stainless tubes (ASTM A312/ ASME SA312)

ASTM A312 /A312M ASME SA312 Covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless-steel pipe intended for high-temperature and general corrosive service.

ASTM A312 /A312M ASME SA312 Grades TP304, TP304L, TP304H, TP309S, TP309H, TP310S, TP310H,

TP316, TP316L, TP316H, TP317, TP317L, TP321, TP321H, TP347, TP347H, TP348, TP348H…

Standard: ASTM A312/A312M, ASME SA312

Description Name: ASTM A312 seamless stainless tube, ASTM A312 welded seamless stainless tubes, ASTM A312 seamless stainless pipes, ASTM A312 welded seamless stainless pipes, TP304/TP304L/TP304H stainless pipes, TP309S/TP309H stainless pipes, TP310S/TP310H stainless pipes, TP316/TP316L stainless pipes. TP321/TP321H stainless pipe, TP347/TP347H stainless pipe, seamless stainless pipe, welded stainless pipe, seamless stainless tube, welded stainless tube.

Seamless Stainless-Steel Pipe:

Size: OD. 10mm, 15mm

Wall Thickness: 1mm and 1.5mm

Grade

Specification

Stainless 304/304L, 304/304H

ASTM A312/SA312

Stainless 309S

ASTM A312/SA312

Stainless 310S

ASTM A312/SA312

Stainless 316/316L, 316/316H

ASTM A312/SA312

Stainless 317/317L

ASTM A312/SA312

Stainless 321

ASTM A312/SA312

Stainless 347/347H

ASTM A312/SA312

Grade

Specification

Stainless 304/304L, 304/304H

A/SA312

Stainless 316/316L. 316/316H

A/SA312

Stainless 317/317L

A/SA312

Stainless 321

A/SA312

Stainless 347/347H

A/SA312

Shape: Round

Length: Single random length/ Double random length or as customer’s actual request

Referenced Documents:

ASTM Referenced Standards

A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
A999/A999M Specification for General Requirements for Alloy and Stainless Steel Pipe
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
E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

Chemical Composition:

Grade

UNS
Design

Composition, %

C

Mn

P

S

Si

Cr

Ni

Mb

Ti

Nb

N

Cu

Ce

B

Al

TP304

S30400

0.08

2

0.045

0.03

1

18.0–20

8.0–11

. . .

. . .

. . .

. . .

. . .

. . .

 

 

TP304L

S30403

0.035

2

0.045

0.03

1

18.0–20

8.0–13

. . .

. . .

. . .

. . .

. . .

. . .

 

 

TP304H

S30409

0.04 – 0.1

2

0.045

0.03

1

18.0–20

8.0–11

. . .

. . .

. . .

. . .

. . .

. . .

 

 

TP310S

S31008

0.08

2

0.045

0.03

1

24.0- 26

19.0- 22

0.8

. . .

. . .

. . .

. . .

. . .

 

 

TP310H

S31009

0.04 – 0.1

2

0.045

0.03

1

24.0–26

19.0–22

. . .

. . .

. . .

. . .

 

. . .

 

 

TP310H

S31035

0.04 – 0.1

0.6

0.025

0.015

0.4

21.5–23.5

23.5–26.5

. . .

. . .

0.40- 0.6

0.20- 0.3

2.5- 3.5

. . .

0.002- 0.008

 

TP316

S31600

0.08

2

0.045

0.03

1

16.0–18

10.0–14

2.00–3

. . .

. . .

. . .

. . .

. . .

 

 

TP316L

S31603

0.035

2

0.045

0.03

1

16.0–18

10.0–14

2.00–3

. . .

. . .

. . .

. . .

. . .

 

 

TP316H

S31609

0.04 – 0.1

2

0.045

0.03

1

16.0–18

10.0–14

2.00–3

. . .

. . .

. . .

. . .

. . .

 

 

TP317

S31700

0.08

2

0.045

0.03

1

18.0–20

11.0–15

3.0–4

. . .

. . .

. . .

. . .

. . .

 

 

TP317L

S31703

0.035

2

0.045

0.03

1

18.0–20

11.0–15

3.0–4

. . .

. . .

. . .

. . .

. . .

 

 

TP321

S32100

0.08

2

0.045

0.03

1

17.0–19

9.0–12

. . .

Ti 5 × (C+N) min, 0.70 max

. . .

0.1

. . .

. . .

 

 

TP321H

S32109

0.04 – 0.1

2

0.045

0.03

1

17.0–19

9.0–12

. . .

4(C+N) min; 0.70 max

. . .

0.1

. . .

. . .

 

 

TP321H

S32654

0.02

2.0-4

0.03

0.005

0.5

24.0–25

21.0–23

7.0-8

. . .

. . .

0.45- 0.55

0.30-0.6

. . .

 

 

TP321H

S33228

0.04 – 0.08

1

0.02

0.015

0.3

26.0–28

31.0–33

. . .

. . .

0.60- 1

. . .

. . .

0.05 – 0.1

 

0.025

TP321H

S34565

0.03

5.0-7

0.03

0.01

1

23.0–25

16.0–18

4.0-5

. . .

0.1

0.40- 0.6

. . .

. . .

 

 

TP347

S34700

0.08

2

0.045

0.03

1

17.0–19

9.0–13

. . .

. . .

See Spec

. . .

. . .

. . .

 

 

TP347H

S34709

0.04 – 0.1

2

0.045

0.03

1

17.0–19

9.0–13

. . .

. . .

See Spec

. . .

. . .

. . .

 

 

Alloy 20

N08020

0.07

2

0.045

0.035

1

19.0–21

32.0–38

2.0–3

. . .

See Spec

. . .

3.0– 4

. . .

. . .

. . .

Alloy 20

N08367

0.03

2

0.04

0.03

1

20.0–22

23.5–25.5

6.0–7

. . .

. . .

0.18–0.25

0.75

. . .

. . .

. . .

Alloy 20

N08028

0.03

2.5

0.03

0.03

1

26.0–28

30.0–34

3.0–4

 

 

 

0.60–1.4

 

 

 

Alloy 20

N08029

0.02

2

0.025

0.015

0.6

26.0–28

30.0–34

4.0–5

 

 

 

0.6– 1.4

 

 

 

Heat Treatment Requirements

Grade

UNS
Designation

Finished

Heating Temperature

Cooling/testing Requirements

TP304H

S30409, S30415

Cold

1900 °F [1040 °C]

See Spec

TP304H

S30409, S30415

Hot

1900 °F [1040 °C]

See Spec

TP310H

S31009

 

1900 °F [1040 °C]

See Spec

TP310H

S31035

 

2160—2280 °F [1180—1250 °C]

See Spec

TP316H

S31609

Cold

1900 °F [1040 °C]

See Spec

TP316H

S31610

Hot

1900 °F [1040 °C]

See Spec

TP321H

S32109, S32615

Cold

2000 °F [1100 °C]

See Spec

TP321H

S32109, S32615

Hot

1925 °F [1050 °C]

See Spec

TP321H

S32654

 

2100 °F [1150 °C]

See Spec

TP321H

S33228

 

2050—2160 °F [1120—1180 °C]

See Spec

TP321H

S34565

 

2050—2140 °F [1120—1170 °C]

See Spec

TP347H

S34709

Cold

2000 °F [1100 °C]

See Spec

TP347H

S34709

Hot

1925 °F [1050 °C]

See Spec

Alloy 20

N08020

 

1700—1850 °F [925—1010 °C]

See Spec

Alloy 20

N08367

 

2025 °F [1110 °C]

See Spec

Alloy 20

N08028

 

2000 °F [1100 °C]

See Spec

Alloy 20

N08029

 

2000 °F [1100 °C]

See Spec

Tensile Requirements

Grade

UNS
Designation

Tensile Strength, Min  ksi [MPa]

Yield strength, min ksi [MPa]

other

TP304

S30400

75 [515]

30 [205]

 

TP304L

S30403

70 [485]

25 [170]

 

TP304H

S30409

75 [515]

30 [205]

 

TP304H

S30415

87 [600]

42 [290]

 

TP310S

S31008

75 [515]

30 [205]

 

TP310H

S31009

75 [515]

30 [205]

 

TP310H

S31035

95 [655]

45 [310]

 

TP316

S31600

75 [515]

30 [205]

 

TP316L

S31603

70 [485]

25 [170]

 

TP316H

S31609

75 [515]

30 [205]

 

TP316H

S31635

75 [515]

30 [205]

 

TP317

S31700

75 [515]

30 [205]

 

TP317L

S31703

75 [515]

30 [205]

 

TP317L

S31725

75 [515]

30 [205]

 

TP317L

S31726

80 [550]

35 [240]

 

TP317L

S31727

80 [550]

36 [245]

 

TP317L

S31730

70 [480]

25 [175]

 

TP317L

S32053

93 [640]

43 [295]

 

TP321

S32100

75 [515]

30 [205]

welded & seamless

TP321

S32100

75 [515]

30 [205]

t = 0.375 in.

TP321

S32100

70 [480]

25 [170]

t > 0.375 in.

TP321H

S32109

75 [515]

30 [205]

welded & seamless

TP321H

S32109

75 [515]

30 [205]

t = 0.375 in.

TP321H

S32109

70 [480]

25 [170]

t > 0.375 in.

TP321H

S32615

80 [550]

32 [320]

 

TP321H

S32654

109 [750]

62 [430]

 

TP321H

S33228

73 [500]

27 [185]

 

TP321H

S34565

115 [795]

60 [415]

 

TP347

S34700

75 [515]

30 [205]

 

TP347H

S34709

75 [515]

30 [205]

 

Alloy 20

N08020

80 [550]

35 [240]

 

Alloy 20

N08028

73 [500]

31 [214]

 

Alloy 20

N08029

73 [500]

31 [214]

 

Alloy 20

N08367

100 [690]

45 [310]

t = 0.187 in.

Alloy 20

N08367

95 [655]

45 [310]

t > 0.187 in.

Elongation Requirements

Elongation in 2 in., min, %

longitudinal

Transverse

Grain size

Longitudinal

Transverse

35

25

35

25

35

25

35

25

35

25

35

25

7 or coarser

35

25

35

25

35

25

35

25

35

25

35

25

6 or coarser

35

25

35

25

7 or coarser

35

25

35

25

35

25

35

25

35

25

35

25

7 or coarser

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

7 or coarser

35

25

35

25

35

25

35

25

25

25

3 or finer

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

35

25

7 or coarser

35

25

35

25

40

40

40

40

30

30

30

30

Flattening Test

For material heat treated in a continuous furnace flattening tests shall be made on a sufficient number of pipes to constitute 5 % of the lot, but in no case less than 2 lengths of pipe.

Hydrostatic or Nondestructive Testing

Each pipe shall be subjected to the nondestructive electric test or the hydrostatic test.

Markings

Markings will adhere to prescribed specifications in A999/A999M and shall include the NPS or OD and schedule number or average wall thickness, heat number, and NH (when hydrotesting is not performed) and ET (when eddy-current testing is performed) or UT (when ultrasonic testing is performed). The marking shall also include the manufacturer’s private identifying mark, the marking requirement of section 12.3 on Hydrostatic or Nondestructive Electric Test, if applicable, and whether seamless (SML), welded (WLD), or heavily cold-worked (HCW). For Grades TP304H, TP316H, TP321H & TP347H, the marking shall also include the heat number and heat-treatment lot identification.

Note:

  • Mill test certificates will be issued according to EN10204.3
  • All tubes shall be supplied as per applicable ASTM A312 /A312M Specification.

TP321 Inspection

TP321 Stainless Tubes Measuring 1
TP321 Stainless Tubes Inspection 1
TP321 Stainless Tubes Measuring 2
TP321 Stainless Tubes Inspection 2

Packing and Marking

  • Packed in bundles or ply wooden box wrapped in plastic, and suitably protected for sea-worthily delivery or as requested.

Packing photos:

TP321 Stainless Tubes Wooden Case Package

Get in Touch

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Tel.: +86 185 5109 0083 | E-mail: cts@ctstubes.com

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