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ASTM A814-88a 

COLD WORKED WELDED AUSTENITIC STAINLESS STEEL PIPE

This standard is issued under the fixed designation A 814/A 814M; 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 two classes of flanged and cold-bending quality cold-worked straight-seam single or double welded austenitic steel pipe intended for high-temperature and general corrosive service. 

NOTE 1?When the impact test criterion for a low-temperature service would be 15 ft . 1bf[20 J] energy absorption or 15 mils [0.38 mm] lateral expansion, some of he austenitic stainless steel grades covered by this specification are accepted by certain pressure vessel o piping codes without the necessity of making the actual text.

For example, Grades TP304, TP304L, and TP347 are accepted by the ASME Pressure Vessel Code, Section ? Division 1, and by the Chemical Plant and Refinery Piping Code, ANSI B31.3, for service at temperatures as low as -425? [-250?] without impact tests. 

Other AISI stainless steel grades are usually accepted for service temperatures as low as -325? [-200?] without impact testing. Impact testing may, under certain circumstances, be required. 

For example, materials with chromium or nickel content outside the ANSI ranges, and for material with carbon content exceeding 0.10?, are required to be impact tested under the rules of ASME Section ? Division 1 when service temperatures are lower than -50? [-45?]. 

1.2 Grades TP304H, TP309H, TP309HCb, TP310H, TP310HCb, TP316H, TP321H, TP347H, and TP348H are modifications of Grades TP304, TP309Cb, TP309S, are intended for high-temperature service.

1.3 Two classes of pipe are covered as follows:
1.3.1 Class SW?Pipe, single-welded with no addition of filler metal and
1.3.2 Class DW?Pipe, double-welded with no addition of filler metal.


1.4 Optional supplementary requirements are provided for pipe where a greater degree of testing is desired. These supplementary requirements call for additional tests to be made and, when desired, one or more of these may be specified in the order.


1.5 Table 1 lists the dimensions of welded stainless steel pipe as shown in ANSI B36.19. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification.


1.6 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 are not exact equivalents; therefore, each system mest be used independentlys 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.

This specification is under the jurisiction of ASTM Committee A-1 on Steel, Stainless Steel, and Prlated Alloys and is the direct responsibility of Subcommittee A01.10 on Pipe. Current edition approved July 15, 1991, Published September 1991. Originally published as A814-83. Last previous edition A790/A 814-88a.




Chemical composition 

Grade Mfg. Process Chemical composition(%)
C Si Mn P S Ni Cr Mo Others
TP304 E, W 0.08Max 0.75Max 2.00Max 0.045Max 0.030Max 8.00~16.0 18.0~20.0 - -
TP304H E, W 0.04~0.10 0.75Max 2.00Max 0.045Max 0.030Max 8.00~16.0 18.0~20.0 - -
TP304L E, W 0.035Max 0.75Max 2.00Max 0.045Max 0.030Max 8.00~13.0 18.0~20.0 - -
TP304N E, W 0.08Max 0.75Max 2.00Max 0.045Max 0.030Max 8.00~11.0 18.0~20.0 - -
TP304LN E, W 0.035Max 0.75Max 2.00Max 0.045Max 0.030Max 8.00~11.0 18.0~20.0 - Cb+Ta 10C~1.10
TP304Cb E, W 0.08Max 0.75Max 2.00Max 0.045Max 0.030Max 12.00~16.00 22.00~24.00 0.75Max Cb+Ta 10C~1.10 Cu 0.75Max
TP309S E, W 0.08Max 0.75Max 2.00Max 0.045Max 0.030Max 12.00~15.00 22.00~24.00 0.75Max -
TP310Cb E, W 0.08Max 0.75Max 2.00Max 0.045Max 0.030Max 19.00~22.00 24.00~26.00 0.75Max Cb+Ta 10C~1.10 Cu 0.75Max
TP310S E, W 0.08Max 0.75Max 2.00Max 0.045Max 0.030Max 19.00~22.00 24.00~26.00 0.75Max -
TP316 E, W 0.08Max 0.75Max 2.00Max 0.045Max 0.030Max 10.00~14.0 16.0~18.0 2.00~3.00 -
TP316H E, W 0.04~0.10 0.75Max 2.00Max 0.045Max 0.030Max 10.00~14.0 16.0~18.0 2.00~3.00 -
TP316L E, W 0.035Max 0.75Max 2.00Max 0.045Max 0.030Max 10.00~14.0 16.0~18.0 2.00~3.00 -
TP316N E, W 0.035Max 0.75Max 2.00Max 0.045Max 0.030Max 10.00~14.0 16.0~18.0 2.00~3.00 N 0.10~0.16
TP316LN E, W 0.035Max 0.75Max 2.00Max 0.045Max 0.030Max 10.00~14.0 16.0~18.0 2.00~3.00 N 0.10~0.16
TP317 E, W 0.08Max 0.75Max 2.00Max 0.045Max 0.030Max 11.00~14.00 18.0~20.0 3.00~4.00 -
TP317L E, W 0.035Max 0.75Max 2.00Max 0.045Max 0.030Max 11.00~15.0 18.0~20.0 3.00~4.00 -
TP321 E, W 0.08Max 0.75Max 2.00Max 0.045Max 0.030Max 9.00~13.0 17.0~20.0 - Ti 5C~0.70
TP321H E, W 0.04~0.10 0.75Max 2.00Max 0.045Max 0.030Max 9.00~13.0 17.0~20.0 - Ti 5C~0.70
TP347 E, W 0.08Max 0.75Max 2.00Max 0.045Max 0.035Max 9.00~13.0 17.0~20.0 - Cb+Ta 10C~1.00
TP347H E, W 0.04~0.10 0.75Max 2.00Max 0.045Max 0.035Max 9.00~13.0 17.0~20.0 - Cb+Ta 8C~1.0
TP348 E, W 0.08Max 0.75Max 2.00Max 0.045Max 0.035Max 9.00~13.0 17.0~20.0 - Cb+Ta 10C~1.00
TP348H E, W 0.04~0.10 0.75Max 2.00Max 0.045Max 0.035Max 9.00~13.0 17.0~20.0 - Ta 0.10Max Cb+Ta 8C~1.00
TPXM10 E, W 0.08Max 1.00Max 8.00~10.00 0.040Max 0.030Max 5.50~7.50 19.00~21.50 - N 0.15~0.40
TPXM11 E, W 0.04Max 1.00Max 8.00~10.00 0.040Max 0.030Max 5.50~7.50 19.00~21.50 - N 0.15~0.40
TPXM15 E, W 0.08Max 1.50~2.00 2.00Max 0.040Max 0.030Max 17.50~18.50 17.0~19.0 - -
TPXM19 E, W 0.060Max 1.00Max 11.50~14.50 0.040Max 0.030Max 11.50~13.50 20.50~23.50 1.50~3.00 N 0.20~0.40 V 0.10~0.30 Cb+Ta 0.10~0.30
TPXM29 E, W 0.080Max 1.00Max 11.50~14.50 0.060Max 0.030Max 2.25~3.75 17.0~19.0 - N 0.20~0.40 V 0.10~0.30 Cb+Ta 0.10~0.30
S31254 E, W 0.020Max 0.80Max 1.00Max 0.030Max 0.010Max 17.50~18.50 19.50~20.50 6.00~6.50 N 0.180~0.220 Cu 0.50~1.00
S30815 E, W 0.10Max 0.80Max 1.40~2.00 0.040Max 0.030Max 10.0~12.0 20.0~22.0 - N 0.14Max~0.20 Cu 0.03~0.08

  


Mechanical Properties 

Grade Tensile Test MPa or N/mm2 Remaks (Similar to JIS) Possibility Temperature
Min Yield point Tensile Strength
TP304 205 485Min for High Temperature and Corrosion Resistance Service -
TP304H 205 485Min -
TP304L 205 515Min -
TP304N 205 515Min -
TP304LN 205 515Min -
TP304Cb 205 515Min -
TP309S 205 515Min -
TP310Cb 205 515Min -
TP310S 205 515Min -
TP316 205 515Min -
TP316H 205 515Min -
TP316L 205 515Min -
TP316N 205 515Min -
TP316LN 205 515Min -
TP317 205 515Min -
TP317L 205 515Min -
TP321 205 515Min -
TP321H 205 515Min -
TP347 205 515Min -
TP347H 205 515Min -
TP348 205 515Min -
TP348H 205 515Min -
TPXM10 345 515Min -
TPXM11 345 620Min -
TPXM15 205 515Min -
TPXM19 380 690Min -
TPXM29 380 690Min -
S31254 300 650Min -
S30815 310 600Min -

  


  TABLE 1 Pipe DimensionsA 

NPS No. Outside Diameter Outside Diameter
Tolerance		 Schedule Wall
Thickness Tolerance
1/8 0.405 +0.004
-0.002		 10
40
80		 0.049
0.068
0.095		 ±0.004
±0.005
±0.006
1/4 0.540 +0.005
-0.003		 10
40
80		 0.065
0.088
0.119		 ±0.005
±0.006
±0.009
3/8 0.675 +0.006
-0.004		 10
40
80		 0.065
0.091
0.126		 ±0.005
±0.006
±0.010
1/2 0.840 +0.007
-0.005		 5
10
40
80		 0.065
0.083
0.109
0.147		 ±0.005
±0.006
±0.009
±0.011
3/4 1.060 +0.010
-0.007		 5
10
40
80		 0.065
0.083
0.113
0.154		 ±0.005
±0.009
±0.009
±0.011
1 1.315 +0.010
-0.007		 5
10
40
80		 0.065
0.109
0.133
0.179		 ±0.005
±0.009
±0.011
±0.014
1 1/4 1.660 -0.012
-0.008		 5
10
40
80		 0.065
0.109
0.140
0.191		 ±0.005
±0.009
±0.011
±0.014
1 1/2 1.900 +0.015
-0.008		 5
10
40
80		 0.065
0.109
0.145
0.200		 ±0.005
±0.009
±0.011
±0.015
2 2.375 +0.018
-0.008		 5
10
40
80		 0.065
0.109
0.154
0.218		 ±0.005
±0.009
±0.011
±0.015
2 1/2 2.875 +0.020
-0.009		 5
10
40
80		 0.065
0.120
0.203
0.276		 ±0.005
±0.010
±0.015
±0.020
3 3.500 +0.025
-0.010		 5
10
40
80		 0.083
0.120
0.216
0.300		 ±0.006
±0.010
±0.015
±0.020
3 1/2 4.000 +0.025
-0.010		 5
10
40
80		 0.083
0.120
0.226
0.318		 ±0.006
±0.010
±0.018
±0.020
4 4.500 +0.025
-0.010		 5
10
40
80		 0.083
0.120
0.237
0.337		 ±0.006
±0.010
±0.019
±0.020

All dimensions in inches.   

NPS Number Lengths of Pipe in Lot
Under2 400 or fraction thereof
2 to5 inclusive 200 or fraction thereof
6 and over 100 or fraction thereof




  TABLE 2 Chemical Requirements 

Grade UNS
Desig-
nationA		 Composition,%
Carbon,
maxH		 Manga-
nese,
maxH		 Phos-
phorus,
max		 Sulfur,
max		 Silicon Nickel Chromium Molyb-
denum
TP304 S30400 0.08 2.00 0.045 0.030 0.75max 8.00-11.0 18.0-20.0 ...
TP 304H S30409 0.04-0.10 2.00 0.045 0.030 0.75max 8.00-11.0 18.0-20.0 ...
TP 304L S30403 0.035B 2.00 0.045 0.030 0.75max 8.00-13.0 18.0-20.0 ...
TP 304N S30451 0.08 2.00 0.045 0.030 0.75max 8.00-11.0 18.0-20.0 ...
TO 304LN S30453 0.035 2.00 0.045 0.030 0.75max 8.00-11.0 18.0-20.0 ...
TP 309S S30940 0.08 2.00 0.045 0.030 0.75max 12.00-16.00 22.0-24.00 0.75max
TP 309Cb S30908 0.08 2.00 0.045 0.030 0.75max 12.00-15.00 22.00-24.00 0.75max
TP 310Cb S31040 0.08 2.00 0.045 0.030 0.75max 19.00-22.00 24.00-26.00 0.75max
TP 310S S31008 0.08 2.00 0.045 0.030 0.75max 19.00-22.00 24.00-26.00 0.75max
TP 316 S31600 0.08 2.00 0.045 0.030 0.75max 10.0-14.0 16.0-18.0 2.00-3.00
TP 316H S31609 0.04-0.10 2.00 0.045 0.030 0.75max 10.0-14.0 16.0-18.0 2.00-3.00
TP 316L S31603 0.035B 2.00 0.045 0.030 0.75max 10.0-15.0 16.0-18.0 2.00-3.00
TP 316N S31651 0.08 2.00 0.045 0.030 0.75max 10.0-14.0 16.0-18.0 2.00-3.00
TP 316LN S31653 0.035 2.00 0.045 0.030 0.75max 10.0-14.0 16.0-18.0 2.00-3.00
TP 317 S31700 0.08 2.00 0.045 0.030 0.75max 11.0-14.0 18.0-20.0 3.00-4.00
TP 317L S31703 0.038 2.00 0.045 0.030 0.75max 11.0-15.0 18.0-20.0 3.00-4.00
TP 321 S32100 0.08 2.00 0.045 0.030 0.75max 9.00-13.0 17.0-20.0 ...
TP 321H S32109 0.04-0.10 2.00 0.045 0.030 0.75max 9.00-13.0 17.0-20.0 ...
TP 347 S34700 0.08 2.00 0.045 0.030 0.75max 9.00-13.0 17.0-20.0 ...
TP 347H S34709 0.04-0.10 2.00 0.045 0.030 0.75max 9.00-13.0 17.0-20.0 ...
TP 348 S34800 0.08 2.00 0.045 0.030 0.75max 9.00-13.0 17.0-20.0 ...
TP 348H S34809 0.04-0.10 2.00 0.045 0.030 0.75max 9.00-13.0 17.0-20.0 ...
TP XM-10 S21900 0.08 8.00-10.00 0.040 0.030 1.00max 5.50-7.50 19.00-21.50 ...
TP XM-11 S21903 0.04 8.00-10.00 0.040 0.030 1.00max 5.50-7.50 19.00-21.50 ...
TP XM-15 S38100 0.08 2.00 0.030 0.030 1.50-2.50 17.50-18.50 17.0-19.0 ...
TP XM-19 S20910 0.060 4.00-6.00 0.040 0.030 1.00max 11.50-13.50 20.50-23.50 1.50-3.00
TP XM-29 S24000 0.080 11.50-14.50 0.060 0.030 1.00max 2.25-3.75 17.0-19.0 ...
... S31254 0.020 1.00 0.030 0.010 0.80max 17.50-18.50 19.50-20.50 6.00-6.50
... S30815 0.10 0.80 0.040 0.030 1.40-2.00 1.40-2.00 20.0-22.0 ...


 

Grade UNS
Desig-
nationA		 Composition,%
Titlenium Colum-
bium
plus
Tantalum		 Tanta-
lum,
max		 NitrogenG Vanadium Copper Cerium
TP304 S30400 ... ... ... ... ... ... ...
TP 304H S30409 ... ... ... ... ... ... ...
TP 304L S30403 ... ... ... ... ... ... ...
TP 304N S30451 ... ... ... 0.10-0.16 ... ... ...
TO 304LN S30453 ... ... ... 0.10-0.16 ... ... ...
TP 309S S30940 ... 10 x Cmin,
1.10max		 ... ... ... 0.75max ...
TP 309Cb S30908 ... ... ... ... ... 0.75max ...
TP 310Cb S31040 ... 10 x Cmin,
1.10max		 ... ... ... 0.75max ...
TP 310S S31008 ... 10 x Cmin,
1.10max		 ... ... ... 0.75max ...
TP 316 S31600 ... ... ... ... ... ... ...
TP 316H S31609 ... ... ... ... ... ... ...
TP 316L S31603 ... ... ... ... ... ... ...
TP 316N S31651 ... ... ... ... ... ... ...
TP 316LN S31653 ... ... ... 0.10-0.16 ... ... ...
TP 317 S31700 ... ... ... 0.10-0.16 ... ... ...
TP 317L S31703 ... ... ... ... ... ... ...
TP 321 S32100 C ... ... ... ... ... ...
TP 321H S32109 D ... ... ... ... ... ...
TP 347 S34700 ... E ... ... ... ... ...
TP 347H S34709 ... F ... ... ... ... ...
TP 348 S34800 ... E 0.10 ... ... ... ...
TP 348H S34809 ... F 0.10 ... ... ... ...
TP XM-10 S21900 ... ... ... 0.15-0.40 ... ... ...
TP XM-11 S21903 ... ... ... 0.15-0.40 ... ... ...
TP XM-15 S38100 ... ... ... ... ... ... ...
TP XM-19 S20910 ... 0.10-0.30 ... 0.20-0.40 0.10-0.30 ... ...
TP XM-29 S24000 ... ... ... 0.20-0.40 ... ... ...
... S31254 ... ... ... 0.180-0.220 ... 0.50-1.00 ...
... S30815 ... ... ... 0.14-0.20 ... ... 0.03-0.08



ANew designation established ina ccordance with ASTM E 527 and SAE J1086, Practice for Numberig Metals and Alloy (UNS). 

BFor small diameter or thin walls or both, where manydrawing passes are required, a carbon maximum of 0.040% is necessary in grades TP 304L.

Small outside diameter tubes are defined as those less than 0.500 in. [12.7mm] in outside diameter and light wall tubes as those less than 0.049 in.[1.2mm] in average wall thickness ().44 in.[1mm] in minimum wall thickness).

CThe titanium content shall be not less than five times the carbon content and not more than 0.s70%. DThe titanium content shall be not less than four times the carbon content and not more than 0.60%.

EThe columbium plus tantalum content shall be not less than ten times the carbon content and not more than 1.00%

FThe columbium plus tantalum content shall be not less than eight times the carbon content and not more than 1.0% 

GThe method of analysis for nitrogen shall be a matter or agrement between the purchaser and manufacturer. 

HMaximum, unless otherwise indicated.  

TABLE 3 Tensile Requirments

Grade UNS Designation Tensile 
Strength, 
min
ksi [MPa]		 Yield
strength,
min
ksi[MPa]
TP 304L S30403 70[485] 25[170]
TP 316L S31603 70[485] 25[170]
TP 304 S30400 75[515] 30[205]
TP 304H S30409 75[515] 30[205]
TP 309Cb S30940 75[515] 30[205]
TP 309S S30908 75[515] 30[205]
TP 310Cb S31040 75[515] 30[205]
TO 310S S31008 75[515] 30[205]
TP 316 S31600 75[515] 30[205]
TP 316H S31609 75[515] 30[205]
TP 317 S31700 75[515] 30[205]
TP 317L S31703 75[515] 30[205]
TP 321 S32100 75[515] 30[205]
TP 321H S32109 75[515] 30[205]
TP 347 S34700 75[515] 30[205]
TP 347H S34709 75[515] 30[205]
TP 348 S34800 75[515] 30[205]
TP 348H S34809 75[515] 30[205]
TP XM-10 S21900 90[620] 50[345]
TP XM-11 S21903 90[620] 50[345]
TP XM-15 S38100 75[515] 30[205]
TP XM-29 S24000 100[690] 55[380]
TP XM-19 S20910 100[690] 55[380]
TP 304N S30451 80[550] 35[240]
TP 316N S31651 80[550] 35[240]
TP 304LN S30453 75[515] 30[205]
TP 316LN S31653 75[515] 30[205]
... S31254 94[650] 44[300]
... S30815 87[600] 45[310]

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