Categories



ASTM standards

Aesteiron's Accreditation

Certificates

Steel Pipe Weight Calculator

Associate Manufacturers

Specialist in:


SS,CS,Alloy Steel Pipe Prices

Our Video

ASTM A312 / ASME SA312 / Seamless and Welded Austenitic Stainless Steel Pipe supplier & distributor in India

PIPE & TUBE ASTM STANDARDS

Our Associate manufacturers

ASTM A 312-89a / ASME SA 312

SEAMLESS AND WELDED AUSTENITIC STAINLESS STEEL PIPE

This standard is issued under the fixed designation A 271; 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 ( ε) indicates an editorial change since the last revision or reapproval. 

1.Scope
 

1.1 This specification covers grades of minimum-wall-thickness, seamless, hot-finished and cold-finished, austenitic chromium-nickel steel sill tubes as designated in Table 1 for use in carrying fluids at elevated temperatures and pressures in various types of heaters, in which the tubes may be subjected to a furnace temperature higher than that of the contained fluids.

1.2 The specification covers tubes 2 to 9 in., (50.8 to 228.6 mm) inclusive, in outside diameter and over 0.220 in. (5.59 mm) in minimum wall thickness.

1.3 Grades TP304H, TP321H, TP347H, and TP316H are modifications of Grades TP304, TP321, TP347 and TP316, and are intended for high-temperature service.

1.4 Where butt welding is used to obtain lengths longer than single lengths normally produced on the mill, Specification A 422, shall cover the requirements for butt welds.

1.5 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

1.6 Optional supplementary requirements are provided, and when desired, shall be o stated in the order.

Grade  Remarks (Similar to JIS) possibility
temperature
TP304 (SUS304TP)  
TP304H  (SUS304HTP)  
TP304L (SUS304LTP)  
TP304N -  
TP304LN -  
TP309Cb -  
TP309H -  
TP309CHb -  
TP309S (SUS309STP)  
TP310Cb -  
TP310H -  
TP310HCb -  
TP310S (SUS310STP)  
TP316 (SUS316TP)  
TP316H (SUS316HTP)  
TP316L (SUS316LTP)  
TP316N -  
TP316LN -  
TP317 (SUS317TP)  
TP317L (SUS317LTP)  
TP321 (SUS321TP)  
TP321H (SUS321HTP)  
TP347 (SUS347TP)  
TP347H (SUS347HTP)  
TP348 -  
TP348H -  
TPXM-10 -  
TPXM-11 -  
TPXM-15 -  
TPXM-19 -  
TPXM-29 -  
S31254 -  
S30815 -  
S31050 -  
S30600 -  
S34725 -  
S31726 -  



Chemical Requirements

Grade UNS
Desi-
gna-
tionA
Composition,%
Carbon,
maxB
Mang-
anese,
maxB
Phos-
phorus,
max
Sulfur,
max
Silicon Nickel Chrom Molyb-
denum
Tita-
nium
Colum-
bium
plus
Tant-
alum
Tant-
alum,
max
Nitro-
genV
Vana-
dium
Cop-
per
Cer-
ium
Boron
TP304 S30400 0.08 2.00 0.040 0.030 0.75
max
8.00-11.0 18.0- 
22.0
... ... ... ... ... ... ... ...
TP304H S30409 0.04-0.10 2.00 0.040 0.030 0.75
max
8.00-11.0 18.0- 
22.0
... ... ... ... ... ... ... ...
TP304L S30403 0.035E 2.00 0.040 0.030 0.75
max
8.00-11.0 18.0- 
22.0
... ... ... ... ... ... ... ...
TP304N S30451 0.08 2.00 0.040 0.030 0.75
max
8.00-11.0 18.0- 
22.0
... ... ... ... 0.10-0.16s ... ... ...
TP304LN S30453 0.035 2.00 0.040 0.030 0.75
max
8.00-11.0 18.0- 
22.0
... ... ... ... 0.10-0.16 ... ... ...
TP309HCb S30940 0.08 2.00 0.045 0.030 0.75
max
12.0-16.0 22.0- 
24.0
0.75max ... 10xC
min,
1.10
max
... ... ... ... ...
TP309H S30909 0.04-0.10 2.00 0.040 0.030 0.75
max
12.0-15.0 22.0- 
24.0
... ... ... ... ... ... ... ...
TP309HCb S30941 0.04-0.10 2.00 0.045 0.030 0.75
max
12.0-16.0 22.0- 
24.0
0.75max ... 10xC
min,
1.10
max
... ... ... ... ...
TP309S S30908 0.08 2.00 0.045 0.030 0.75
max
12.0-15.0 22.0- 
24.0
0.75max ... ... ... ... ... ... ...
TP310Cb S31040 0.08 2.00 0.045 0.030 0.75
max
19.0-22.0 24.0- 
26.0
0.75max ... 10xC
min,
1.10
max
... ... ... ... ...
TP310H S31009 0.04-0.10 2.00 0.040 0.030 0.75
max
19.0-22.0 24.0- 
26.0
... ... ... ... ... ... ... ...
TP310HCb S31041 0.04-0.10 2.00 0.045 0.030 0.75
max
19.0-22.0 24.0- 
26.0
0.75max ... 10xC
min,
1.10
max
... ... ... ... ...
TP310S S31008 0.08 2.00 0.045 0.030 0.75
max
19.0-22.0 24.0- 
26.0
0.75max ... ... ... ... ... ... ...
  S31272 0.08-0.12 1.5-2.00 0.030 0.015 0.3
-0.7
14.0-16.0 14.0- 
16.0
1.0-1.4 0.3-0.6 ... ... ... ... ... ... 0.004-0.008
TP316 S31600 0.08 2.00 0.040 0.030 0.75
max
11.0-14.0D 16.0- 
18.0
2.00-3.00 ... ... ... ... ... ... ...
TP316H S31609 0.04-0.10 2.00 0.040 0.030 0.75
max
11.0-14.0D 16.0- 
18.0
2.00-3.00 ... ... ... ... ... ... ...
TP316L S31603 0.035 2.00 0.040 0.030 0.75
max
10.0-15.0 16.0- 
18.0
2.00-3.00 ... ... ... ... ... ... ...
TP316N S31651 0.08 2.00 0.040 0.030 0.75
max
11.0-14.0D 16.0- 
18.0
2.00-3.00 ... ... ... ... ... ... ...
TP316LN S31653 0.035 2.00 0.040 0.030 0.75
max
11.0-14.0D 16.0- 
18.0
2.00-3.00s ... ... ... ... ... ... ...
TP317 S31700 0.08 2.00 0.040 0.030 0.75
max
11.0-14.0 18.0- 
20.0
3.00-4.00 ... ... ... ... ... ... ...
TP317L S31703 0.035E 2.00 0.040 0.030 0.75
max
11.0-15.0 18.0- 
20.0
3.00-4.00 ... ... ... ... ... ... ...
TP321 S32100 0.08 2.00 0.040 0.030 0.75
max
9.00-13.0 17.0- 
20.0
... F ... ... ... ... ... ...
TP321H S32109 0.04-0.10 2.00 0.040 0.030 0.75
max
9.00-13.0 17.0- 
20.0
... G ... ... ... ... ... ...
TP347 S34700 0.08 2.00 0.040 0.030 0.75
max
9.00-13.0 17.0- 
20.0
... ... H ... ... ... ... ...
TP347H S34709 0.04-0.10 2.00 0.040 0.030 0.75
max
9.00-13.0 17.0- 
20.0
... ... I ... ... ... ... ...
TP348 S34800 0.08 2.00 0.040 0.030 0.75
max
9.00-13.0 17.0- 
20.0
... ... H 0.10 ... ... ... ...
TP348H S34809 0.04-0.10 2.00 0.040 0.030 0.75
max
9.00-13.0 17.0- 
20.0
... ... I 0.10 ... ... ... ...
TPXM-10 S21900 0.08 8.00-10.00 0.040 0.030 1.00
max
5.50-7.50 19.0- 
21.5
... ... ... ... 0.15-0.40 ... ... ...
TPXM-11 S21904 0.04 8.00-10.00 0.040 0.030 1.00 5.50-7.50 19.0- 
21.5
... ... ... ... 0.15-0.40 ... ... ...
TPXM-15 S38100 0.08 2.00 0.030 0.030 1.50-
2.50
17.5-18.5 17.0- 
19.0
... ... ... ... ... ... ... ...
TPXM-19 S20910 0.060 4.00-6.00 0.040 0.030 1.00
max
11.5-13.5 20.5- 
23.5
1.50-3.00 ... ... ... 0.20-0.40 ... ... ...
TPXM-29 S24000 0.080 11.5-14.5 0.060 0.030 1.00
max
2.25-3.75 17.0- 
19.0
... ... ... ... 0.20-0.40 ... ... ...
... S31254 0.020 1.00 0.030 0.010 0.80
max
17.5-18.5 19.5- 
20.5
6.00-6.50 ... ... ... 0.18-0.22 ... 0.50-1.00 ...
... S30815 0.05-0.10 0.80 0.040 0.030 1.40-
2.00
10.0-12.0 20.0- 
22.0
... ... ... ... 0.14-0.20 ... ... 0.03-0.08
... S31050 0.25 2.00 0.020 0.015 0.4 20.5-23.5 24.0- 
26.0
1.6-2.6 ... ... 0.09-0.15 ... ... ...
... S30600 0.018 2.00 0.02 0.02 3.7
-4.3
14.0-15.5 17.0- 
18.5
0.20max ... ... ... ... ... 0.50max ...
... S31725 0.03 2.00 0.040J 0.030 0.75 13.5-17.5 18.0- 
20.0
4.0-5.0 ... ... ... 0.10max ... 0.75max ...
... S31726 0.03 2.00 0.040J 0.030 0.75 13.5-17.5 17.0- 
20.0
4.0-5.0 ... ... ... 0.10-0.20 ... 0.75max ...
... S32615 0.07 2.00 0.045 0.030 4.8
-6.0
19.0-22.0 16.5- 
19.5
0.3-1.5 ... ... ... ... ... 1.5-2.5 ...
... S24565 0.03 5.0-7.0 0.030 0.010 1.00
max
16.0-18.0 23.0- 
25.0
4.0-5.0 ... ... ... 0.1-0.6 ... ... ...


Tensile Requirements

Grade UNS
Designation
Tensile Strength,
min
ksi[MPa]
Yield Strength,
min
ksi[MPa]
TP304L S30403 70[480] 25[170]
TP316L S31603 70[480] 25[170]
TP304 S30400 75[515] 30[205]
TP304H S30409 75[515] 30[205]
TP309Cb S30940 75[515] 30[205]
TP309H S30909 75[515] 30[205]
TP309HCb S30941 75[515] 30[205]
TP309S S30908 75[515] 30[205]
TP310Cb S31040 75[515] 30[205]
TP310H S31009 75[515] 30[205]
TP310HCb S31041 75[515] 30[205]
TP310S S31008 75[515] 30[205]
  S31272 65[450] 29[200]
TP316 S31600 75[515] 30[205]
TP316H S31609 75[515] 30[205]
TP317 S31700 75[515] 30[205]
TP317L S31703 75[515] 30[205]
TP321 S32100 70[485] 25[170]
Welded
Seamless :
75[515] 30[205]
< 3/8 in. 75[515] 30[205]
> 3/8 in. 70[485] 25[170]
TP347 S34700 75[515] 30[205]
TP347H S34709 75[515] 30[205]
TP348 S34800 75[515] 30[205]
TP348H S34809 75[515] 30[205]
TPXM-10 S21900 90[620] 50[345]
TPXM-11 S21904 90[620] 50[345]
TPXM-15 S38100 75[515] 30[205]
TPXM-19 S24000 100[690] 55[380]
TPXM-29 S30910 100[690] 55[380]
TP304N S30451 80[550] 35[240]
TP306N. S31651 50[550] 35[240]
TP 304LN S30453 75[515] 30[205]
TP 306LN. S31653 75[515] 30[205
... S31254 94[650] 44[300]
... S30815 87[600] 45[310]
... S30600 78[540] 35[240]
... S31725 75[515] 30[205]
... S31726 80[550] 35[240]
... S31050
t ≤ 0.25 in. 84[580] 39[270]
t > 0.25 in.A 78[540] 37[25]
... S32615 80[550] 32[220]
... S24565 115[795 60[415]
Elongation in 2 in. or 50mm(or 4D), min, %; 35 25
All Grades except S31050 25 ...


  TABLE 3 Pipe and Filler Metal Specificaton

Pipe Filler Metal
Grade UNS
Designation
AWS A5.9
Class
UNS Designation
TP304 S30400 ER308 S30800, W30840
TP304L S30403 ER308L S30883, W30843
TP304N S30451 ER308 S30880, W30840
TP304LN S30453 ER308L S30883, W30843
TP304H S30409 ER308 S30880, W30840
TP309Cb S30940 ... ...
TP309S S30908 ... ...
TP310Cb S31040 ... ...
TP310S S31008 ... ...
S31272 ... ...
TP316 S31600 ER316 S31680, W31640
TP316L S31603 ER316L S31683, W31643
TP316N S31651 ER316 S31680, W31640
TP316LN S31653 ER316L S31683, W31643
TP316H S31609 ER316H S31680, W31640
ER321 S32180, W32140
TP321 S32100 ER347 S34780, W34740
TP347 S24700 ER347 S34780, W34740
TP348 S34800 ER347 S34780, W34740
TPXM-19 S22100 ER209 S20980, W32240
TPXM-29 S28300 ER240 S23980, W32440

 

Grade UNS Designation
TP304 S30400
TP304L S30403
TP304N S30451
TP316 S31600
TP316L S31603
TP316N S31651
TP317 S31700
TP317L S31703
TP321 S32100
TP347 S24700

14.1.4 Part Number : Example : ASTM A 312 Pipe 304 NPS 12 SCH 40S SMLS Specificatioin 

Number............................................................................................ASTM A 312
Pipe................................................................................................P
Grade..............................................................................................304 
NPS................................................................................................12 
Wall................................................................................................0.375
SMLS OR WELDED...........................................................................SML 14.1.4.2 Specification Number............................................................................................ASTM A 312
Tube................................................................................................T
Grade...............................................................................................304
Outside Diameter...............................................................................0.250
Wall.................................................................................................0.035 
SMLS OR WELDED............................................................................WLD  



APPENDIX
 (Nonmandatory Information) X1.

TABLE X1.1 IS BASED ON TABLE 1 OF THE AMERICAN NATIONAL STANDARD FOR STAINLESS
STEEL PIPE (ANSI B36.19-1965)
 


TABLE X1.1 Dimensions of Welded and Seamless Stainless Steel Pipe



NOTE - The decimal thickness listed for the respective pipe sizes represents their nominal or average walll dimensions.

NPS
Designator
Outside Diameter Nominal Wall Thickness
in. mm Schedule 5SA Schedule 10SA Schedule 40SA Schedule 80SA
in. mm in. mm in. mm in. mm
1/8 0.405 10.29 ... ... 0.049 1.24 0.068 1.73 0.095 2.41
1/4 0.540 13.72 ... ... 0.065 1.65 0.088 2.24 0.119 3.02
3/8 0.675 17.15 ... ... 0.065 1.65 0.091 2.31 0.126 3.20
1/2 0.840 21.34 0.065 1.65 0.083 2.11 0.109 2.77 0.147 3.73
3/4 4.050 26.67 0.065 1.65 0.083 2.11 0.113 2.87 0.154 3.91
1.0 1.315 33.40 0.065 1.65 0.109 2.77 0.133 3.38 0.179 4.55
1 1/4 1.660 42.16 0.065 1.65 0.109 2.77 0.140 3.56 0.191 4.85
1 1/2 1.900 48.26 0.065 1.65 0.109 2.77 0.145 3.68 0.200 5.08
2 2.375 60.33 0.065 1.65 0.109 2.77 0.154 3.91 0.218 5.54
2 1/2 2.875 73.03 0.083 2.11 0.120 3.05 0.203 5.16 0.276 7.01
3 3.500 88.90 0.083 2.11 0.120 3.05 0.1216 5.49 0.300 7.62
3 1/2 4.000 101.60 0.083 2.11 0.120 3.05 0.226 5.74 0.318 8.08
4 4.500 114.30 0.083 2.11 0.120 3.05 0.237 6.02 0.337 8.56
5 5.563 141.30 0.10*9 2.77 0.134 3.40 0.258 6.55 0.375 9.52
6 6.625 168.28 0.10*9 2.77 0.134 3.40 0.280 7.11 0.432 10.97
8 8.625 219.08 0.109 2.77 0.148 3.76 0.322 8.18 0.500 12.70
10 10.750 273.05 0.134 3.40 0.165 4.19 0.365 9.27 0.500B 12.70B
12 12.750 323.85 0.156 3.96 0.180 4.57 0.375B 9.52B 0.500B 12.70B
14 14.000 355.60 0.156 3.96 0.188B 4.78B ... ... ... ...
16 16.000 406.40 0.165 4.19 0.188B 4.78B ... ... ... ...
18 18.000 457.20 0.165 4.19 0.188B 4.78B ... ... ... ...
20 20.000 508.00 0.188 4.78 0.188B 4.78B ... ... ... ...
22 22.000 558.80 0.188 4.78 0.218B 5.54B ... ... ... ...
24 24.000 609.60 0.218 5.54 0.250 6.35 ... ... ... ...
30 30.000 762.00 0.250 6.35 0.312 7.92 ... ... ... ...

Material Comparison Tables (ASTM →KS, JIS, DIN, BS, NBN, NF, UNI) 

ASTM
STANDARD
UNS NO. KOREA/JAPANES GERMAN BRITISH FRENCH ITALIAN
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 312 Seamless and Welded Austenitic Stainless Steel Pipe
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 TUNZ2CND17-12 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

 

Our Associate manufacturers

Steel pipe & tube ready inventory: