ASTM A335 Gr P91 Alloy Steel Seamless Pipe

Stockist of ASTM A335 Gr P91 ERW Pipes in Mumbai

ASTM A335 P91 pipe suppliers produce these pipes of UNS K91560 standard for different high temperature, high pressure applications. The P91 low alloy steel pipe is one of the high strength, high pressure pipes. The material is stabilized with vanadium, columbium and nitrogen to improve the creep strength. The ASTM A335 Gr P91 ERW Pipes have 585MPa minimum tensile strength and 415MPa minimum yield strength. The highs strength of the material allows it to make pipes with reduced wall thickness by up to 50% compared to other pressure pipe grades in the ASTM A335 specification.

ASTM A335 Gr P91 Alloy Steel Seamless Pipe

ASTM A335 Gr P91 Alloy Steel Seamless Pipe

P91 Alloy Steel Pipe Supplier

P91 Alloy Steel Pipe Supplier

The ASTM A335 Grade P91 Pipe has carbon, manganese, phosphorus, sulfur, silicon, 8% chromium, molybdenum, vanadium, nitrogen, nickel, aluminum, columbium, titanium and zirconium. Although the stabilizing agents are added in less than 1% of the total composition, they provide the ASME SA335 P91 material with the added mechanical properties such as the high strength, corrosion resistance and creep resistance. The ASTM A335 P91 Welded Pipe can be welded without the threat of localized corrosion. This is one of the most used grades for elevated temperature with oxidation reduction.

ASME SA335 P91 Pipe

The Tubo A335 P91 products are used in high temperature and high pressure applications such as boilers, oil services, gas processing equipment, power generation plants, heater and reheat lines and so on. The UNS K11522 Seamless Pipe is virtually non-deteriorating, creep resistant like no other pressure pipes and has reduced wall thickness.

Well-Known High Strength Alloy steel ASTM A335 P91 Welded Pipe Supplier in India.


Specifications Chart of ASTM A335 P91 Pipe

Size 1/8 TO 24 NB inch
In Length of Single Random, Double Random & Required Length, Custom Size – 12 Meter lengths
Thickness 3-12 millimeter
End Manufacturer/ Supplier of ASTM A335 P91 Type 2 Pipe in Beveled End, Plain End, Threaded
Type Seamless / Fabricated / ERW / Welded / CDW
Form Square Pipes/Tubes, Round Pipes/Tubes, Pan Cake Coils, Coiled Tubes, “U” Shape, Rectangular Pipes/Tubes, Hydraulic Tubes
Tolerance Cold rolled: +/-0.05mm; Cold drawn: +/-0.1mm

Refer UNS K11522 Seamless material chemical composition and View ASTM A335 Grade P91 Square/ Round Pipe wall thickness.


ASTM A335 P91 Alloy Steel Pipe Chemical Composition

C, % Mn, % P, % S, % Si, % Cr, % Mo, % V, % N, % Ni, % Al, % Nb, %
0.08-0.12 0.3-0.6 0.02 max 0.01 max 0.2-0.5 8.0-9.5 0.85-1.05 0.18-0.25 0.03-0.07 0.4 max 0.04 max 0.06-0.10

ASME SA335 P91 Pipe Mechanical Properties

Elongation, % Tensile Strength , MPa Hardness, HB Yield Strength, MPa
20 min 585 min 250 max 415 min

A335M-P91 high temperature ferritic alloy steel seamless P91

Standard Steel grade  Yield strengthM P a Tensile M Pa Elongation Min (vertical bar specimen )% ① Elongation Min (round bar specimens )% Squash
ASTM A335/A335M-03 "high temperature ferritic alloy steel seamless" P1, P2 ≤ 205 ≤ 380 30 22 H
P12 ≤ 220 ≤ 415 30 22 H
P23 ≤ 400 ≤ 510 20 20 H
P91 ≤ 415 ≤ 585 20 20 H
Other ≤ 205 ≤ 415 30 22 H
Note: ① using the vertical bar specimens, the wall thickness of less than 8mm, each reduction 0.8mm, P23, P91 should subtract the base elongation of 1.0%, 1.5%, minus all other grades.
Standard Steel grade  Yield strengthM P a Tensile M Pa Elongation% Squash 　
　
ASTM A500-2001 "Structural carbon steel cold-formed and shaped circular cross-section welded steel pipe and seamless steel pipe." Grade A ≤ 228 ≤ 310 ≤ 25 H 　
Grade B ≤ 290 ≤ 400 ≤ 23 H 　
Grade C ≤ 317 ≤ 427 ≤ 21 H 　
Grade D ≤ 250 ≤ 400 ≤ 23 H 　
Standard Steel grade  Yield strengthM P a Tensile M Pa Elongation% Squash Flaring
ASTM A556M-96 "water heater with carbon steel cold drawn seamless steel tubes." A2 ≤ 180 ≤ 320 ≤ 35 H H
B2 ≤ 260 ≤ 410 ≤ 30 H H
C2 ≤ 280 ≤ 480 ≤ 30 H H
Standard Steel grade  Yield strength Tensile strength Elongation (%) ① 　 　
　 　
JIS G 3473-1988 "Carbon steel cylinder" STC370 ≤ 215 ≤ 370 ≤ 30 Note: ① thickness <8mm pipe, elongation is reduced by the minimum thickness at 1mm, to subtract the elongation of 1.5%.
STC440 ≤ 305 ≤ 440 ≤ 10
STC510A ≤ 380 ≤ 510 ≤ 10
STC510B ≤ 380 ≤ 510 ≤ 15
STC540 ≤ 390 ≤ 540 ≤ 20
STC590A ≤ 490 ≤ 590 ≤ 10
STC590B ≤ 490 ≤ 590 ≤ 15
Standard Steel grade  Yield strengthM P a Tensile M Pa Elongation %① Squash 　
　
JIS G 3467-1988 "furnace with steel." STF410 ≤ 245 ≤ 410 ≤ 24 0.08  Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.
STFA12 ≤ 205 ≤ 380 ≤ 24
STFA22 ≤ 205 ≤ 410 ≤ 24
STFA23 ≤ 205 ≤ 410 ≤ 24
STFA24 ≤ 205 ≤ 410 ≤ 24
STFA25 ≤ 205 ≤ 410 ≤ 24
STFA26 ≤ 205 ≤ 410 ≤ 24
Standard Steel grade  Yield strengthM P a Tensile M Pa Elongation %① Squash 　
　
JIS G 3462-1988 "boilers, heat exchangers used in steel pipe." STBA12 ≤ 205 ≤ 380 ≤ 30 0.08 　
Other ≤ 205 ≤ 410 ≤ 30 　
 Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.
Standard Steel grade  Wall thickness  mm Yield strength M Pa Tensile M Pa Elongation% ① Flattening / Flaring
JIS G 3461-1988 "boilers, heat exchangers used in carbon steel." STB340 ≤ 8 ≤ 175 ≤ 340 ≤ 35 H
STB410 ≤ 8 ≤ 255 ≤ 410 ≤ 25 H
STB510 ≤ 8 ≤ 295 ≤ 510 ≤ 25 H
 Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.
Standard Steel grade  Yield strengthM P a Tensile M Pa Elongation (vertical bar specimen ) %① Elongation  ( round bar specimens )% Squash Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.
JIS G 3456-1988 "high carbon steel pipes." STPT370 ≤ 215 ≤ 370 ≤ 30 ≤ 28 0.08
STPT410 ≤ 245 ≤ 410 ≤ 2 5 ≤ 24 0.07
STPT480 ≤ 275 ≤ 480 ≤ 2 5 ≤ 22
Standard Steel grade  Yield strength Tensile strength Elongation  ( tube sections and longitudinal strips sample) % ① Elongation (round bar specimens )% Squashed or bent
JIS G 3455-1988 "high carbon steel pipes." STS370 ≤ 215 ≤ 370 ≤ 30 ≤ 28 H
STS410 ≤ 245 ≤ 410 ≤ 25 ≤ 24 H
STS480 ≤ 275 ≤ 480 ≤ 25 ≤ 22 H
 Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.
Standard Steel grade  Yield strengthM P a Tensile M Pa Elongation  ( vertical bar specimen )% ① Elongation  ( round bar specimens )% Squash
JIS G 3454-1988 "pressure pipes carbon steel pipe." STPG370 ≤ 215 ≤ 370 ≤ 30 ≤ 28 0.08
STPG410 ≤ 245 ≤ 410 ≤ 2 5 ≤ 24 0.07
 Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.

P91 Alloy Steel Seamless Pipe Outside Diameter & Tolerance

ASTM A450 Hot rolled O.D., mm Tolerance, mm
OD≤101.6 +0.4/-0.8
101.6＜OD≤190.5 +0.4/-1.2
190.5＜OD≤228.6 +0.4/-1.6
Cold Drawn O.D., mm Tolerance, mm
OD＜25.4 ±0.10
25.4≤OD≤38.1 ±0.15
38.1＜OD＜50.8 ±0.20
50.8≤OD＜63.5 ±0.25
63.5≤OD＜76.2 ±0.30
76.2≤OD≤101.6 ±0.38
101.6＜OD≤190.5 +0.38/-0.64
190.5＜OD≤228.6 +0.38/-1.14
ASTM A530 & ASTM A335 NPS O.D., inch Tolerance, mm
1/8≤OD≤1-1/2 ±0.40
1-1/2＜OD≤4 ±0.79
4＜OD≤8 +1.59/-0.79
8＜OD≤12 +2.38/-0.79
OD>12 ±1%

ASME SA335 P91 Alloy Steel Seamless Pipe Wall thickness & Tolerance

ASTM A450 Hot rolled O.D., mm Tolerance, %
OD≤101.6, WT≤2.4 +40/-0
OD≤101.6, 2.4＜WT≤3.8 +35/-0
OD≤101.6, 3.8＜WT≤4.6 +33/-0
OD≤101.6, WT>4.6 +28/-0
OD>101.6, 2.4＜WT≤3.8 +35/-0
OD>101.6, 3.8＜WT≤4.6 +33/-0
OD>101.6, WT>4.6 +28/-0
Cold Drawn O.D., mm Tolerance, %
OD≤38.1 +20/-0
OD>38.1 +22/-0
ASTM A530 NPS O.D., inch Tolerance, %
1/8≤OD≤2-1/2 +20.0/-12.5
3≤OD≤18, WT/OD≤5% +22.5/-12.5
3≤OD≤18, WT/OD>5% +15.0/-12.5
OD≤20, WT/OD≤5% +22.5/-12.5
OD≤20, WT/OD>5% +15.0/-12.5

Quick delivery available on P91 low alloy steel SAW pipe, Get ASTM A335 Grade P91 Rectangular in schedule 40 and sch 80.

ASME SA335 P91 Alloy Steel Seamless Pipe Size Range

  • Size range: ½” nominal through 60” OD
  • Wall Thickness up through 4” thick& heavier upon request

ASTM A335 P91 Welded Pipe Rate Card

Looking for a Low Alloy Steel P91 Welded Pipe Supplier and Distributors with best deals ?

Size MSL Make JSL Make ISMT make
1" 3,897.06 3,904.41 3,889.71
1/2" 4,264.71 4,272.06 4,257.35
1.25" 3,852.94 3,860.29 3,845.59
3/4" 4,044.12 4,051.47 4,036.76
1.5" 3,750.00 3,757.35 3,742.65

Preferred supplier and distributor of ASTM A335 Gr P91 Pipe

Sanyo Special Steel
Sanyo Special Steel
Jindal Steel
Jindal Steel
Kobe Steel
Kobe Steel

Schoeller Bleckmann
Schoeller Bleckmann
Salzgitter Mannesmann
Salzgitter Mannesmann
Nippon Steel And Sumitomo Metal
Nippon Steel And Sumitomo Metal

Weight Table of ASTM A335 Grade P91 Pipe

Size NPS I.D. O.D. Gallon Capacity Per Linear Foot Stnd to XXHY Wall Thick. Wght per Foot Section Modulus Sch.
Pipe #
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
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
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

Buy online Grade P91 Hydraulic Pipes from reputed manufacturer of Chrome Moly P91 Smls material.

P91 low alloy steel pipe Heat Treatment Requirements

Grade Heat Treatment Type Normalizing Temperature Range F [C] Subcritical Annealing
or Tempering
Temperature Range F
[C]
ASTM A335 P91 Pipe Normalize and Temper 1900-1975 [1040 - 1080] 1350-1470 [730 - 800]
  Quench and Temper 1900-1975 [1040 - 1080] 1350-1470 [730 - 800]

Equivalent Grades of ASTM A335 Gr P91 ERW Pipes

ASTM UNS ASME JIS G 3458 DIN ISO ABS Equivalent material BS NK LRS
A335 P91 K91560 SA335 P91 T91, K90901, X10CrMoVNb9-1, 1.4903

ASTM ASME
ASTM A335 Grade P91 Pipe 9% Chrome; 1% Moly + trace elements SA335 P91 A335 9% Chrome; 1% Moly + trace elements

Most famous types of ASME SA335 P91 material Suppliers in India

ASTM A335 Grade P91 NACE SAW Pipe
ASTM A335 Grade P91 NACE SAW Pipe
SA335 P91 Schedule 40 Pipe
SA335 P91 Schedule 40 Pipe
ASTM A335 P91 High pressure boiler pipes
ASTM A335 P91 High pressure boiler pipes

Alloy Steel P91 Welded Pipe
Alloy Steel P91 Welded Pipe
DN10 SCH40 Hot rolled ASTM A335 P91 Alloy Seamless Steel Pipe
DN10 SCH40 Hot rolled ASTM A335 P91 Alloy Seamless Steel Pipe
ASTM A335 P91 Square hollow section
ASTM A335 P91 Square hollow section

Sizing Chart of UNS K11522 Seamless Pipe

Kanak Metal & Alloys are Supplier of several kind of SA335 Gr.P91 Pipe Sizes.

O.D x Thickness(mm) O.D. x Thickness(mm) O.D x Thickness(mm)
57.0 x 4.9 38.1 x 3.2 76.2 x 4.0
57.0 x 6.3 38.1 x 4.0 76.2 x 5.0
57.0 x 7.9 38.1 x 6.3 76.2 x 6.3
60.3 x 3.2 42.4 x 3.2 82.5 x 4.5
60.3 x 3.6 42.4 x 4.0 88.9 x 3.2
60.3 x 5.0 44.5 x 3.2 88.9 x 3.6
63.5 x 3.2 44.5 x 6.3 88.9 x 4.0
63.5 x 3.6 48.3 x 3.2 101.6 x 3.6
63.5 x 4.0 48.3 x 3.6 101.6 x 4.5
63.5 x 6.3 50.8 x 4.5 101.6 x 6.3
63.5 x 7.9 51.0 x 3.2 114.3 x 3.6
70.0 x 3.2 51.0 x 3.6 114.3 x 5.0
70.0 x 3.6 51.0 x 6.3 139.7 x 4.0
70.0 x 6.3 57.0 x 3.2 139.7 x 5.0
76.2 x 3.6 57.0 x 3.6 139.7 x 6.3

Searching P91 Chrome Moly Pipe Supplier UK and UAE ?

OD 19.05, ASTM A335 Grade P91 Alloy Pipes, LG 4880mm, WT 2.11 mm Europe, Japan, Romania, Faridabad, Malaysia, Chandigarh
WT 15.2mm, ASTM A335 P91 Seamless Alloy Steel Pipes, OD 32.3mm, 12IN Dammam -KSA, Indonesia, Belgium, Noida, Mumbai, Philippines
5.8M, Alloy Steel A335 P91 Seamless Pipess, SCH 40S, 10 Inch Singapore, Malaysia, Jaipur, Philippines, Canada, Ludhiana
ASTM A335 P91, BE Seamless Steel Pipes, SCH 40, 11.8M Europe, Thailand, Sikandrabad, Qatar, France, Bengaluru
8IN X 20FT, ASTM A335 P91 Square Pipes, SCH 80, Bevel Ends with Caps Nashik, Lucknow, UK, Mexico, Spain, Egypt, Nagpur
DN350, ASTM A335 P91 Steel Pipes, 6M, SCH 120 Chennai, Czechia, Germany, Thailand, Thiruvananthapuram, Malaysia
14 Inch, ASME SA335 Grade P91 Seamless Pipes, SCH40, 6M Vadodara, Malaysia, Colombia, Rajkot, Sweden, China
6M, ASTM A335 P91 Alloy Steel Pipes, SCH 100, 8 Inch, BE Ends Finland, Bangladesh, Surat, Malaysia, Pune, USA
PE, ASTM A335 Grade P91 Seamless Pipes, 1 1/2 Inch, SCH 40S Bhuneshwar, Philippines, Taiwan, Los Alamos -Mexico, Malaysia
6 Meters, ASTM A335 P91 Alloy Steel Pipes, SCH STD, 6 Inch, BE South Africa, Brazil, Kuwait, Saudi Arabia (KSA), Ahmedabad
ASTM A335 P91, Alloy Steel Seamless Pipes, 9-12 m, 6 Inch Singapore, NY 12203 (USA), Malaysia, South Korea, Gurgaon
ASTM A335 P91 Seamless Pipes, SCH 80, 10 Inch, BE South Africa, Bahrain, Agra, Singapore, Kolkata
Alloy Steel A335 P91 Seamless Pipes, 12 Inch, ANSI B36.19 UAE, Malaysia, Indore, United Kingdom -UK, Europe
ASME B36.19, 12 Inch, ASTM A335 Gr P91 Seamless Pipes, SCH10, 6M Philippines, Thane, Australia, Hyderabad, Nigeria, France, UK
SCH 40S, ASTM A335 Gr P91 Seamless Pipes, 3 Inch, 6 Meter Russia, Netherlands, Malaysia, Dehradun, Kochi, Dubai
12 Inch, ASTM A-335 P91 Alloy Steel Seamless Pipes, SCH 10S Hong Kong, Patna, Ahmedabad, Oman, Malaysia, UAE
ASTM A335 P91 Seamless Alloy Steel Pipes, Sch80, 16 inch Navi Mumbai, Poland, Ellington -United States, UK, Canada
2mm, Alloy Steel Welded Pipes, 3 Inch, ASTM A335 P91, 6 M Bhopal, Italy, Delhi, Singapore, Iran, Visakhapatnam, Delhi, Chile
WT 3.05 mm, A335 Alloy Steel P91 Pipes, OD 25.4 mm, LG 9146 mm Malaysia, Norway, Coimbatore, Turkey, United Arab Emirates (UAE)