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SA 335 Gr P91 seamless pipe
P91 pipe material specification
P91 pipe material specification
| SPECIFICATION | DETAILS |
|---|---|
| Pipe end | Plain, Beveled End |
| Size | 1/2 inch to 24 inch NB |
| Wall thickness | 2 mm to 14 mm |
| Coating | FBE coating, Varnished coating, Galvanized coating, Blacking painting, 3LPE coating |
| Surface finish | Bright, Cold Finish, BA Finish, No.4 finish, Annealing, Polished, Pickling |
| Value added service | Heat treating, Ut test, Polishing, Beveling |
ASTM A335 P91 pipe
SA 335 gr P91 seamless pipe
SA335 P91 welded pipe
P91 chrome pipe
A335 gr P91 ERW pipe
A335P91 EFW pipe
Thickness chart of SA335 P91 welded pipe
Thickness chart of SA335 P91 welded pipe
| O.D.(mm) x Thickness(mm) | O.D(mm) x Thickness(mm) | O.D(mm) x Thickness(mm) |
|---|---|---|
| 44.5 x 3.2 | 88.9 x 3.6 | 60.3 x 5.0 |
| 44.5 x 6.3 | 88.9 x 4.0 | 63.5 x 3.2 |
| 48.3 x 3.2 | 101.6 x 3.6 | 63.5 x 3.6 |
| 48.3 x 3.6 | 101.6 x 4.5 | 63.5 x 4.0 |
| 50.8 x 4.5 | 101.6 x 6.3 | 63.5 x 6.3 |
| 51.0 x 3.2 | 114.3 x 3.6 | 63.5 x 7.9 |
| 38.1 x 3.2 | 76.2 x 4.0 | 57.0 x 4.9 |
| 38.1 x 4.0 | 76.2 x 5.0 | 57.0 x 6.3 |
| 38.1 x 6.3 | 76.2 x 6.3 | 57.0 x 7.9 |
| 42.4 x 3.2 | 82.5 x 4.5 | 60.3 x 3.2 |
| 42.4 x 4.0 | 88.9 x 3.2 | 60.3 x 3.6 |
| 51.0 x 3.6 | 114.3 x 5.0 | 70.0 x 3.2 |
| 51.0 x 6.3 | 139.7 x 4.0 | 70.0 x 3.6 |
| 57.0 x 3.2 | 139.7 x 5.0 | 70.0 x 6.3 |
| 57.0 x 3.6 | 139.7 x 6.3 | 76.2 x 3.6 |
P91 pipe price
P91 pipe price
| Description | Price in USD | Price in Kilogram (INR) |
|---|---|---|
| Astm A335 P91 Pipe, Thickness: 3.5 mm - 25 mm, Size: 1/2 inch | $ 2.44 | ₹ 210 |
| Astm A335 Gr P91 Pipes, Nominal Size: 3 inch | $ 1.16 | ₹ 100 |
| ASTM A335 P91 Alloy Steel Pipe, Nominal Size: 4 Inch | $ 9.31 | ₹ 800 |
Test certificate of P91 seamless pipe
- EN 10204 3.1
- PMI Test Reports
- Mechanical Reports
- Mill Test Certificates
- Chemical Reports
- Visual Inspection Reports
P91 pipe weight chart
P91 pipe weight chart
| Size NPS | I.D. | O.D. | Gallon Capacity Per Linear Foot | Stnd to XXHY | Wall Thick. | Wght per Foot | Section Modulus | Sch. Pipe # |
| 1 1/4 | 1.380 | 1.66 | .0777 | STD | 0.140 | 2.27 | .2346 | 40 |
| 1.278 | .0666 | XHY | 0.191 | 3.00 | .2913 | 80 | ||
| 1.160 | .0549 | 0.250 | 3.77 | .3421 | 160 | |||
| 0.896 | .0328 | 0.382 | 5.22 | .4110 | ||||
| 1 1/2 | 1.610 | 1.90 | .1058 | STD | 0.145 | 2.72 | .3262 | 40 |
| 1.500 | .0918 | XHY | 0.200 | 3.63 | .4118 | 80 | ||
| 1.338 | .0730 | 0.281 | 4.86 | .5079 | 160 | |||
| 1.100 | .0494 | 0.400 | 6.41 | .5977 | ||||
| 2 | 2.157 | 2.375 | .1898 | 0.109 | 2.64 | .4205 | 10 | |
| 2.067 | .1743 | STD | 0.154 | 3.66 | .5606 | 40 | ||
| 1.939 | .1534 | XHY | 0.218 | 5.03 | .7309 | 80 | ||
| 1.875 | .1434 | 0.250 | 5.68 | .8045 | ||||
| 1.813 | .1344 | 0.281 | 6.29 | .8666 | ||||
| 1.687 | .1161 | 0.344 | 7.47 | .9806 | 160 | |||
| 1.503 | .0922 | XXHY | 0.436 | 9.04 | 1.1043 | |||
| 1/2 | 0.622 | 0.84 | .0158 | STD | 0.109 | 0.85 | .0407 | 40 |
| 0.546 | .0122 | XHY | 0.147 | 1.09 | .0478 | 80 | ||
| 0.464 | .0088 | 0.188 | 1.31 | .0528 | 160 | |||
| 0.252 | .0026 | XXHY | 0.294 | 1.72 | .0577 | |||
| 3/4 | 0.824 | 1.05 | .0277 | STD | 0.113 | 1.13 | .0705 | 40 |
| 0.742 | .0225 | XHY | 0.154 | 1.48 | .0853 | 80 | ||
| 0.612 | .0153 | 0.219 | 1.95 | .1006 | 160 | |||
| 0.434 | .0077 | XXHY | 0.308 | 2.44 | .1103 | |||
| 1 | 1.049 | 1.315 | .0449 | STD | 0.133 | 1.68 | .1328 | 40 |
| 0.957 | .0374 | XHY | 0.179 | 2.17 | .1606 | 80 | ||
| 0.815 | .0271 | 0.250 | 2.85 | .1904 | 160 | |||
| 0.599 | .0146 | XXHY | 0.358 | 3.66 | .2136 | |||
| 2 1/2 | 2.635 | 2.875 | .2833 | 0.120 | 3.53 | .6870 | 10 | |
| 2.469 | .2487 | STD. | 0.203 | 5.80 | 1.0640 | 40 | ||
| 2.443 | .2435 | 0.216 | 6.14 | 1.1169 | ||||
| 2.375 | .2301 | 0.250 | 7.02 | 1.2468 | ||||
| 2.323 | .2202 | XHY | 0.276 | 7.67 | 1.3386 | 80 | ||
| 2.125 | .1842 | 0.375 | 10.02 | 1.6371 | 160 | |||
| 1.771 | .1280 | XXXHY | 0.552 | 13.71 | 1.9971 | |||
| 3 | 3.260 | 3.50 | .4336 | 0.120 | 4.34 | 1.0411 | ||
| 3.188 | .4147 | 0.156 | 5.58 | 1.3122 | ||||
| 3.156 | .4064 | 0.172 | 6.12 | 1.4265 | ||||
| 3.124 | .3984 | 0.188 | 6.66 | 1.5342 | ||||
| 3.068 | .3840 | STD. | 0.216 | 7.58 | 1.7241 | 40 | ||
| 3.000 | .3672 | 0.250 | 8.69 | 1.9372 | ||||
| 2.938 | .3521 | 0.281 | 9.67 | 2.1207 | ||||
| 2.900 | .3431 | XHY | 0.300 | 10.26 | 2.2253 | 80 | ||
| 2.624 | .2811 | 0.438 | 14.34 | 2.8774 | 160 | |||
| 2.300 | .2158 | XXHY | 0.600 | 18.6 | 3.4243 | |||
| 3 1/2 | 3.760 | 4.0 | .5768 | 0.120 | 4.98 | 1.3776 | 10 | |
| 3.548 | .5136 | STD. | 0.226 | 9.12 | 2.3939 | 140 | ||
| 3.500 | .4998 | 0.250 | 10.02 | 2.6001 | ||||
| 3.438 | .4821 | 0.281 | 11.17 | 2.8562 | ||||
| 3.364 | .4617 | XHY | 0.318 | 12.52 | 3.1400 | 80 | ||
| 2..728 | .3085 | XXHY | 0.636 | 22.87 | 4.8795 | |||
| 4 | 4.260 | 4.5 | .7404 | 0.120 | 5.62 | 1.7612 | 10 | |
| 4.188 | .7156 | 0.156 | 7.24 | 2.2354 | ||||
| 4.124 | .6942 | 0.188 | 8.67 | 2.6296 | ||||
| 4.094 | .6838 | 0.203 | 9.32 | 2.8173 | ||||
| 4.062 | .6725 | 0.219 | 10.02 | 3.0184 | ||||
| 4.026 | .6613 | STD. | 0.237 | 10.80 | 3.2145 | 40 | ||
| 4.000 | .6528 | 0.250 | 11.36 | 3.3611 | ||||
| 3.938 | .6326 | 0.281 | 12.67 | 3.7021 | 60 | |||
| 3.876 | .6126 | 0.312 | 13.97 | 4.0273 | ||||
| 3.826 | .5972 | XHY | 0.337 | 15.00 | 4.2713 | 80 | ||
| 3.624 | .5361 | 0.438 | 19.02 | 5.1790 | 120 | |||
| 3.438 | .4822 | 0.531 | 22.53 | 5.8997 | 160 | |||
| 3.152 | .4054 | XXHY | 0.674 | 27.57 | 6.7927 | |||
| 5 | 5.187 | 5.563 | 1.0979 | 0.188 | 10.80 | 4.1161 | ||
| 5.125 | 1.0716 | 0.219 | 12.51 | 4.7279 | ||||
| 5.047 | 1.0391 | STD. | 0.258 | 14.63 | 5.4500 | 40 | ||
| 5.001 | 1.0204 | 0.281 | 15.87 | 5.8644 | ||||
| 4.939 | .99647 | 0.312 | 17.51 | 6.4074 | ||||
| 4.875 | .9696 | 0.344 | 19.19 | 6.9358 | ||||
| 4.813 | .9449 | XHY | 0.375 | 20.80 | 7.4300 | 80 | ||
| 4.563 | .8495 | 0.500 | 27.06 | 9.2534 | 120 | |||
| 4.313 | .7590 | 0.625 | 32.99 | 10.7976 | 160 | |||
| 4.063 | .6734 | XXHY | 0.750 | 38.59 | 12.0954 | |||
| 6 | 6.407 | 6.625 | 1.6748 | 0.109 | 7.59 | 3.5769 | 5 | |
| 6.357 | 1.6488 | 0.134 | 9.30 | 4.3475 | 10 | |||
| 6.313 | 1.6260 | 0.156 | 10.79 | 5.0107 | ||||
| 6.249 | 1.5937 | 0.188 | 12.94 | 5.9351 | ||||
| 6.219 | 1.5780 | 0.203 | 13.94 | 6.3804 | ||||
| 6.187 | 1.5620 | 0.219 | 15.00 | 6.8261 | ||||
| 6.125 | 1.5306 | 0.250 | 17.04 | 7.6905 | ||||
| 6.065 | 1.5008 | STD. | 0.280 | 18.99 | 8.4958 | 40 | ||
| 6.001 | 1.4688 | 0.312 | 21.06 | 9.3416 | ||||
| 5.937 | 1.4391 | 0.344 | 23.10 | 10.111 | ||||
| 5.875 | 1.4082 | 0.375 | 25.05 | 10.893 | ||||
| 5.761 | 1.3541 | XHY | 0.432 | 28.60 | 12.224 | 80 | ||
| 5.625 | 1.2909 | 0.500 | 32.74 | 13.711 | ||||
| 5.501 | 1.2346 | 0.562 | 36.43 | 14.9806 | 120 | |||
| 5.375 | 1.1787 | 0.625 | 40.09 | 16.1821 | ||||
| 5.187 | 1.0977 | 0.719 | 45.39 | 17.8243 | 160 | |||
| 4.897 | .9784 | XXHY | 0.864 | 53.21 | 20.025 | |||
| 4.625 | .8727 | 1.000 | 60.13 | 21.7719 | ||||
| 4.375 | .7809 | 1.125 | 66.14 | 23.1237 |
P91 chrome pipe welding procedure
- Flux cored arc welding (FCAW) process
- Mig Process
- MAG-welding cored wire
- Arc welding (E)
- MAG-welding massive wire
- Submerged arc welding (SAW)
- TIG-welding
A335 Gr P91 ERW pipe extrusion process
Application of ASTM A335 P91 alloy steel chrome moly pipes
- Gas processing equipment
- Oil services
- Heaters/reheat lines
- Petrochemical plants
- Power generation
- Boilers
ASTM A335 P91 chemical composition
ASTM A335 P91 chemical composition
| Mn % | P % | C % | S % | Cr % | Mo % | Si % |
|---|---|---|---|---|---|---|
| 0.30-0.60 | 0.025 max | 0.05-0.15 | 0.025 max | 1.00-1.50 | 0.44-0. | 0.50-1.00 |
A335P91 EFW pipe mechanical properties
A335P91 EFW pipe mechanical properties
| Tensile Strength | Elongation | Yield Strength |
|---|---|---|
| 415 MPa-min | 30 % min | 205 MPa-min |
P91 chrome pipe equivalent grades
P91 chrome pipe equivalent grades
| ASTM | UNS | Equivalent material | ASME |
|---|---|---|---|
| P91 pipes | K91560 | K90901, T91, 1.4903, X10CrMoVNb9-1 | ASME SA335 P91 pipes |
P91 pipe schedule chart
P91 pipe schedule chart
| NPS in inch | 1/2 | 3/4 | 2 | 3 | 1 | 1 1/4 | 4 | 6 | 12 | 16 | 10 | 20 | 24 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sched 40 | .109 | .113 | .154 | .216 | .133 | .14 | .237 | .28 | .406 | .5 | .365 | .5 | .5 |
| Sched 10 | .06 | .06 | .09 | .12 | .065 | .08 | .12 | .12 | .145 | .145 | .145 | .145 | .2 |
| Sched 20 | .109 | .113 | .154 | .216 | .133 | .14 | .237 | .28 | .406 | .5 | .365 | .6 | .7 |
| Sched 80 | .147 | .154 | .218 | .3 | .179 | .2 | .337 | .432 | .5 | .5 | .5 | .5 | .5 |
| Sched 160 | .2 | .3 | .5 | .5 | .25 | .375 | .5 | .5 | .5 | .5 | .5 | .5 | .5 |
Temperature rating of alloy P91 hot finished seamless pipe
Temperature rating of alloy P91 hot finished seamless pipe
| Pipe Grade | Temperature Range F [C] | Normalizing Temperature Range F [C] |
|---|---|---|
| A335 P91 | 1350-1470 F [730 - 800 C] | 1900-1975 F [1040 - 1080 C] |
| 1350-1470 F [730 - 800 C] | 1900-1975 F [1040 - 1080 C] |
SA 335 P91 boiler pipe sizes
SA 335 P91 boiler pipe sizes
| OD (inches) | OD (mm) | Sch 80 WT (mm) | Sch 40 WT (mm) | Sch 160 WT (mm) |
|---|---|---|---|---|
| 4 | 114.3 | 8.56 | 6.02 | 13.49 |
| 6 | 168.3 | 10.97 | 7.11 | 18.26 |
| 1 | 33.4 | 4.55 | 3.38 | 6.35 |
| 2 | 60.3 | 5.54 | 3.91 | 8.74 |
| 3 | 88.9 | 7.62 | 5.49 | 11.13 |
| 8 | 219.1 | 12.70 | 8.18 | 23.01 |
| 10 | 273.1 | 15.09 | 9.27 | 28.58 |
| 12 | 323.9 | 17.48 | 9.53 | 33.32 |
ASTM A335 Gr P91 high pressure pipe od tolerance
ASTM A335 Gr P91 high pressure pipe od tolerance
| A335 Pipe | Over | Under | ||
| NPS [DN] | in. | milimeter | in. | mm |
| Over 4 to 8 / DN 100 to 200 | 1/16 (0.062) | 1.59 | 1/32 (0.031) | 0.79 |
| 1/8 to 1 1/2 / DN 6 to 40 | 1/64 (0.015) | 0.4 | 1/64 (0.015) | 0.4 |
| Over 1 1/2 to 4 / DN 40 to 100 | 1/32 (0.031) | 0.79 | 1/32 (0.031) | 0.79 |
| Over 8 to 12 / DN 200 to 300 | 3/32 (0.093) | 2.38 | 1/32 (0.031) | 0.79 |
| Over 12 / > DN 300 | +/- 1% of the specified outside diameter | |||
SA 335 Gr P91 round pipe creep properties
SA 335 Gr P91 round pipe creep properties
| Temp. | Cree strength |
Tim limit |
Cree strength |
|---|---|---|---|
| 10 000h | Rp0.2 |
100 000h | |
| ° C | N / m/ ksi | N / m/ ksi | N / m/ ksi |
| 550/1022 | 199 / 28,8 | 270 / 39.1 | 166 / 24.0 |
| 600/1112 | 122 / 17.6 | 215 / 31,1 | 94 / 13.6 |
| 20/68 | 450/65 | ||
| 100/212 | 410 / 59.4 | ||
| 300/572 | 360 / 52,2 | ||
| 500/932 | 289 / 41.9 | 300 / 43.5 | 258 / 37.4 |
| 650/1202 | 70 / 10,1 | 49 / 7,1 |
P91 vs P22
P91 vs P22
| Mechanical Property | P22 | P91 |
|---|---|---|
| Elongation (min) | 20% | 20% |
| Hardness (Brinell) | ~200 HB (typical) | ≤ 250 HB |
| Tensile Strength (min) | 415 MPa | 620 MPa |
| Yield Strength (min) | 205 MPa | 415 MPa |
| Creep Resistance | Moderate | Excellent |
| Max Operating Temperature | ~540–570°C | ~650–675°C |
SA335 P91 pipe elogation
SA335 P91 pipe elogation
| Wall Thickness | P91 | |
| inch | MM | Longitudinal |
| 3/16 (0.188) | 4.8 | 16 |
| 1/4 (0.250) | 6.4 | 18 |
| 9/32 (0.281) | 7.2 | 19 |
| 1/18 (0.062) | 1.6 | 12 |
| 5/16 (0.312) | 8 | 20 |
| 7/32 (0.219) | 5.6 | 17 |
| 5/32 (0.156) | 4 | 15 |
| 3/32 (0.094) | 2.4 | 13 |
| 7/8 (0.125) | 3.2 | 14 |
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