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ASTM A376 Stainless Steel Seamless Pipe

Home ASTM A376 Stainless Steel Seamless Pipe



ASTM A376 Stainless Steel Seamless Pipe Supplier, ASTM A376 Material

Superior Steel Overseas provide a complete and best quality range of  ASTM A376 Material.ASTM A376 covers seamless austenitic steel pipe intended for high-temperature central-station service. ASTM a376 grades covered are five H grades and two nitrogen grades.ASTM A376 Pipe may be either hot finished or cold finished, with a suitable finishing treatment. All ASTM A376 pipes shall be furnished in the heat-treated condition unless the order specifically states that no final heat treatment shall be applied. Tensile tests, hydrostatic test, nondestructive electric tests, ultrasonic tests, eddy-current tests, tension tests, and flattening tests shall be made to conform to the requirements specified.

Table of Content

  1. ASTM A376 Specifications
  2. ASTM A376 Tolerances
  3. ASTM A376 Pressure Ratings
  4. ASTM A376 Pipe Dimensions
  5. ASTM A376 Chemical Composition
  6. ASTM A376 Mechanical Properties
  7. ASTM A376 Equivalent

ASTM A376 Specifications

Specification
ASTM A-376 & ASTM / ASME SA376
Grades
304,304H, 304LN,304N,316,316H,316N,316LN,321,347,347H,348
Type
SEAMLESS
Outer Diameter Size
 6mm-630mm.
Wall Thickness
1mm-30mm.5S,10S,40S,80S
Length
4-13m,5.8m,6m or according to customers’ requests.
Tolerances
Meet the standard.
Surface
 Pickled & Annealed.
Other Testing
Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiographic Examination, Stabilizing Heat Treatment, Intergranular Corrosion Test, Weld Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc
Value Added Services
Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment
Packaging
 Each in a PVC bag, Bundle with knitted plastic bag, wooden case or according to customers’ request.
Material Test Certificate
Eddy current / hydrostatic/ Ultrasonic/ Intergranular Corrosion or according to customers’ request.
Delivery
By Road – Truck / Train, By Sea – Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 30 Feet Container / 35 Feet Container / High Cube Container / Open Top Container, By Air – Freighter Civil Passenger and Cargo Planes

ASTM A376 Tolerances

Nominal Pipe Size Inches Outside Diameter Tolerances
A376 Seamless
Plus Minus
1/8 IPS to 11/2 IPS incl. .015î .031î
2 IPS to 4 IPS incl. .031î .031î
5 IPS to 8 IPS incl. .062î .031î
10 IPS to 12 IPS incl. .093î .031î
Wall Tolerances By Wt. 12.5%
Weight Tolerances 10.0% 3.5%

ASTM A376 Pressure Ratings

 

ASTM
Spec No.

 

Grade

Min Temp
°F
(for °C see Notes)

Metal Temperature, °F (°C)

 

Notes

Min Temp to 100
(37.8)

300
(149)

500
(260)

700
(371)

850
(454)

1000
(538)

1150
(621)

1300
(704)

1400
(760)

1500
(816)

Basic Allowable Stress, S ksi

A 376

TP321

-325

20.0

20.0

19.3

17.5

16.7

16.2

6.9

3.2

1.9

1.1

1, 2, 4

A 376

TP321H

-325

20.0

20.0

19.3

17.5

16.7

16.2

6.9

3.2

1.9

1.1

1, 2

A 376

TP316

-425

20.0

20.0

17.9

16.3

15.7

15.3

9.8

4.1

2.3

1.3

2, 4, 5, 8

A 376

TP316H

-325

20.0

20.0

17.9

16.3

15.7

15.3

9.8

4.1

2.3

1.3

2, 5, 8

A 376

TP347H

-325

20.0

20.0

19.9

18.6

18.2

18.0

10.5

4.4

2.5

1.3

1, 2

A 376

TP347

-425

20.0

20.0

19.9

18.6

18.2

18.0

10.5

4.4

2.5

1.3

1, 2, 4

A 376

TP348

-325

20.0

20.0

19.9

18.6

18.2

18.0

10.5

4.4

2.5

1.3

1, 2, 4

A 376

TP304

-425

20.0

20.0

17.5

16.0

14.9

13.8

7.7

3.7

2.3

1.4

2, 4, 5, 8

A 376

TP304H

-325

20.0

20.0

17.5

16.0

14.9

13.8

7.7

3.7

2.3

1.4

2, 5, 8

ASTM A376 Pipe Dimensions

PIPE
SIZE
O.D.
INCHES 		5S 5 10S 10 20 30 40S & STD. 40 60 80S & E.H. 80 100 120 140 160 DBL.
E.H.
1/8 .405   .035
.1383 		.049
.1363 		.049
.1363 		    .068
.2447 		.068
.2447 		  .095
.3145 		.095
.3145 		         
1/4 .540   .049
.2570 		.065
.3297 		.065
.3297 		    .088
.4248  		.088
.4248 		  .119
.5351 		.119
.5351 		         
3/8 .675   .049
.3276 		.065
.4235 		.065
.4235 		    .091
.5676 		.091
.5676 		  .126
.7388 		.126
.7388 		         
1/2 .840 .065
.5383 		.065
.5380 		.083
.6710 		.083
.6710 		    .109
.8510 		.109
.8510 		  .147
1.088 		.147
1.088 		      .187
1.304 		.294
1.714
3/4 1.050 .065
.6838 		.065
.6838 		.083
.8572 		.083
.8572 		    .113
1.131 		.113
1.131 		  .154
1.474 		.154
1.474 		      .218
1.937 		.308
2.441
1 1.315 .065
.8678 		.065
.8678 		.109
1.404 		.109
1.404 		    .133
1.679 		.133
1.679 		  .179
2.172 		.179
2.172 		      .250
2.844 		.358
3.659
1 1/4 1.660 .065
1.107 		.065
1.107 		.109
1.806 		.109
1.806 		    .140
2.273 		.140
2.273 		  .191
2.997 		.191
2.997 		      .250
3.765 		.382
5.214
1 1/2 1.900 .065
1.274 		.065
1.274 		.109
2.085 		.109
2.085 		    .145
2.718 		.145
2.718 		  .200
3.631 		.200
3.631 		      .281
4.859 		.400
6.408
2 2.375 .065
1.604 		.065
1.604 		.109
2.638 		.109
2.638 		    .154
3.653 		.154
3.653 		  .218
5.022 		.218
5.022 		      .344
7.462 		.436
9.029
2 1/2 2.875 .083
2.475 		.083
2.475 		.120
3.531 		.120
3.531 		    .203
5.793 		.203
5.793 		  .276
7.661 		.276
7.661 		      .375
10.01 		.552
13.70
3 3.500 .083
3.029 		.083
3.029 		.120
4.332 		.120
4.332 		    .216
7.576 		.216
7.576 		  .300
10.25 		.300
10.25 		      .438
14.32 		.600
18.58
3 1/2 4.000 .083
3.472 		.083
3.472 		.120
4.973 		.120
4.973 		    .226
9.109 		.226
9.109 		  .318
12.51 		.318
12.51 		        .636
22.85
4 4.500 .083
3.915 		 .083
3.915 		.120
5.613 		.120
5.613 		    .237
10.79 		.237
10.79 		  .337
14.98 		.337
14.98 		   .438
19.00 		  .531
22.51 		.674
27.54
4 1/2 5.000              .247
12.54 		    .355
17.60 		           
5 5.563 .109
6.349 		.109
6.349 		.134
7.770 		.134
7.770 		    .258
14.62 		.258
14.62 		  .375
20.78 		.375
20.78 		  .500
20.78 		  .625
32.96 		.750
38.55
6 6.625 .109
7.585 		.109
7.585 		.134
9.289 		.134
9.289 		    .280
18.97 		.280
18.97 		  .432
28.57 		.432
28.57 		  .562
36.39 		  .719
43.35 		.864
53.16
7 7.625             .301
23.54 		    .500
38.04 		          .875
63.08
8 8.625 .109
9.914 		.109
9.914 		.148
13.40 		.148
13.40 		.250
22.36 		.277
24.70 		.322
28.55 		.322
28.55 		.406
35.64 		.500
43.39 		.500
43.39 		.594
50.95 		.719
60.71 		.812
67.76 		.906
74.69 		.875
72.42
9 9.625             .342
33.91 		    .500
48.73 		           
10 10.75 .134
15.19 		.134
15.19 		.165
18.70 		.165
18.70 		.250
28.04 		.307
34.24 		.365
40.48 		.365
40.48 		.500
54.74 		.500
54.74 		.594
64.43 		.719
77.03 		.844
82.29 		1.000
104.1 		1.125
115.6 		1.000
104.1
11 11.75             .375
45.56 		    .500
60.08 		           
12 12.75 .156
21.07 		.165
22.18 		.180
24.16 		.180
24.16 		.250
33.38 		.330
43.77 		.375
49.56 		.406
53.52 		.562
73.15 		.500
65.42 		.688
88.63 		.844
107.3 		1.000
125.5 		1.125
136.7 		1.312
160.3 		1.000
125.5
14 14.00 .156
23.07 		  .188
27.73 		.250
36.71 		.312
45.61 		.375
54.57 		.375
54.57 		.438
63.44 		.594
85.05 		.500
72.09 		.750
106.1 		.938
130.9 		1.094
150.8 		1.250
170.2 		1.406
189.1 		 
16 16.00 .165
27.90 		  .188
31.75 		.250
42.05 		.312
52.27 		.375
62.58 		.375
62.58 		.500
82.77 		.656
107.5 		.500
82.77 		.844
136.6 		1.031
164.8 		1.219
192.4 		1.438
223.6 		1.594
245.3 		 
18 18.00 165
31.43 		  .188
35.76 		.250
47.39 		.312
58.94 		.438
82.15 		.375
70.59 		.562
104.7 		750
138.2 		.500
93.45 		.938
170.9 		1.156
208.0 		1.375
244.1 		1.562
274.2 		1.781
308.5 		 
20 20.00 .188
39.78 		  .218
46.05 		.250
52.73 		.375
78.60 		.500
104.1 		.375
78.60 		.594
123.1 		.812
166.4 		.500
104.1 		1.031
208.9 		1.281
256.1 		1.500
296.4 		1.750
341.1 		1.969
379.2 		 
24 24.00 .218
55.37 		  .250
63.41 		.250
63.41 		.375
94.42 		.562
140.7 		.375
94.42 		.688
171.3 		.969
238.4 		.500
125.5 		1.219
296.8 		1.531
367.4 		1.812
429.4 		2.062
483.1 		2.344
542.1 		 
26 26.00       .312
85.60 		.500
136.17 		  .375
102.63 		    .500
136.17 		           
28 28.00       .312
92.26 		.500
146.85 		.625
182.73 		.375
110.64 		                 
30 30.00 .250
79.43 		  .312
98.93 		.312
98.93 		.500
157.53 		.625
196.08 		.375
118.65 		    .500
157.53 		           
32 32.00       .312
105.59 		.500
168.21 		.625
209.43 		.375
126.66 		.688
230.08 		  .500
168.21 		           
34 34.00       .312
112.25 		.500
178.89 		.625
222.78 		.375
134.67 		.688
244.77 		               
36 36.00       .312
118.92 		.500
189.57 		.625
236.13 		.375
142.68 		.750
282.35 		  .500
189.57 		           

ASTM A376 Chemical Composition

A376 GRADES UNS C Mn P S Si Cr Ni Mo Ti Nb N
TP304 S3040 0.08 2.0 0.045 0.030 1.0 18.0-20.0 8.0-11.0
TP304L S30403 0.035 2.0 0.045 0.030 1.0 18.0-20.0 8.0-13.0
TP304H S30409 0.04-0.10 2.0 0.045 0.030 1.0 18.0-20.0 8.0-11.0
TP304N S30451 0.08 2.0 0.045 0.030 1.0 18.0-20.0 8.0-18.0 0.10-0.16
TP304LN S30453 0.035 2.0 0.045 0.030 1.0 18.0-20.0 8.0-12.0 0.10-0.16
TP316 S3160 0.08 2.0 0.045 0.030 1.0 16.0-18.0 11.0-14.0 2.0-3.0
TP316L S31603 0.035 2.0 0.045 0.030 1.0 16.0-18.0 10.0-14.0 2.0-3.0
TP316H S31609 0.04-0.10 2.0 0.045 0.030 1.0 16.0-18.0 11.0-14.0 2.0-3.0
TP316LN S31635 0.08 2.0 0.045 0.030 0.75 16.0-18.0 10.0-14.0 2.0-3.0 5x
(C-N)
-0.70 		0.10
TP316N S31651 0.08 2.0 0.045 0.030 1.0 16.0-18.0 10.0-14.0 2.0-3.0 0.10-0.16
TP316LN S31653 0.035 2.0 0.045 0.030 1.0 16.0-18.0 11.0-14.0 2.0-3.0 0.10-0.16
TP317 S3170 0.08 2.0 0.045 0.030 1.0 18.0-20.0 10.0-14.0 3.0-4.0
TP317L S31703 0.035 2.0 0.045 0.030 1.0 18.0-20.0 11.0-15.0 3.0-4.0
TP321 S3210 0.08 2.0 0.045 0.030 1.0 17.0-19.0 9.0-12.0 0.10
TP321H S32109 0.04-0.10 2.0 0.045 0.030 1.0 17.0-19.0 9.0-12.0 0.10
TP347 S3470 0.08 2.0 0.045 0.030 1.0 17.0-19.0 9.0-13.0
TP347H S34709 0.04-0.10 2.0 0.045 0.030 1.0 17.0-19.0 9.0-13.0
TP347LN S34751 0.05-0.02 2.0 0.045 0.030 1.0 17.0-19.0 9.0-13.0 0.20-
50.0 		0.06-0.10
TP348 S3480 0.08 2.0 0.045 0.030 1.0 17.0-19.0 9.0-13.0
TP348H S34809 0.04-0.10 2.0 0.045 0.030 1.0 17.0-19.0 9.0-13.0

ASTM A376 Mechanical Properties

Material 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
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
TP316LN 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)

ASTM A376 Equivalent

ASTM  

UNS NO.

KOREA/JAPANES

GERMAN

BRITISH

FRENCH

ITALIAN
STAND ARD  

KS/JIS Symbol

  

KS/JIS Numbe

  

Remarks

  

DIN Type

DIN
Number

Materiral
Number 		 

Remarks

B.S
Number

B.S
Grade 		 

Remarks

  

AFNOR Type

  

NF Number

  

Ramarks

  

UNI Type

  

UNI Number

  

Ramarks
A 376
Seamless Austenitic Steel Pipe for High-Temperature Service
TP 304 S30400 STS 304TP / SUS 304 TP

D3576 / G3459

-16

 X5CrNi 18 9

17440

1.4301

(3b)

3605

 304S18 TU Z6 CN19- 10 A 49-230 X5 CrNi 18
10

6904

 (3b)
TP 304H S30409 STS 304HTP / SUS 304HTP

D3576 / G3459

-16

-3

3605

 304S59 TU Z6 CN19- 10 A 49-214 X8 CrNi 19
10

6904

 (3b)
TP 304L S30403 STS 304LTP/SU

D3576 / G3459

-16

 X2 CrNi 19 9

17440

1.4306

(3b)

3605

 304S14 TU Z2 CN19- 11 A 49-230 X2 CrNi 18
11

6904

 (3b)
TP 310 S31000 304LTP

D3576 / G3459

-16

-3

 X22 Cr Ni 25 20

6904

 (3b)(11)
TP 316 S31600 STS 310STP/SU

D3576 / G3459

-16

 X5 CrNiMo 18 10

17440

1.4401

(3b)

3605

 316S18 Z 6 CND
17.11 		A 35-573 (3b) X5 CrNiMo 17 12

6904

 (3b)
TP 316H S34609 310STP

D3576 / G3459

-16

-3

3605

 316S59 TUZ6CND17- 12 A 49-230 X8 CrNiNb 17
12

6904

 (3b)
TP 316L S31603 STS 316TP / SUS 316TP

D3576 / G3459

-16

 X2 CrNiMo 18 10

17440

1.4404

(3b)

3605

 316S14 TUNZ2CND1 7-12 A 49-230 X2 CrNiMo 17 12

6904

 Dalmine 941(3b)
TP 321 S32100 STS 316HTP /SU

D3576 / G3459

-16

 x10 CrNiTi 18 9

17440

1.4541

(3b)

3605

 321S18 Z6 CNT 18.11 A 49-230 X6 CrNiTi 18
11

6904

 (3b)
TP 347 S34700 316HTP

D3576 / G3459

-16

 X5 CrNiNb 18 9

1.4543

(3b)

3605

 347S18 Z6 CNNb 18.11 A 35-573 (3b) X6 CrNiNb 18
11

6904

 (3b)
TP 347H S34709 STS 316LTP /SU

D3576 / G3459

-16

-3

 X6 CrNiNb 18
11

6904

 (3b)
321LTP
STS 321TP / SUS 321TP
STS 347TP / SUS 347TP
STS 347HTP / SUS 347HTP

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