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ASTM A335 P91 Seamless Pipe

Get ASME SA335 Grade P91 Alloy Steel Pipe, ASTM A335 P91 Pipe Manfacturer in india

ASTM A335 P91 Seamless Pipe is made up of a chromium molybdenum alloy that has great temperature resistance and corrosion resistance along with strength. There are type 1 and type 2 products in this range. Navstar Steel is a leading manufacturer and supplier of the ASME SA335 Grade P91 Alloy Steel Pipe products in different dimensions and types.

A335 P91 Material, Check ASTM A335 Gr P91 Welded Pipe at reasonable price

The material can be normalized for strength as a heat treatment method. The 9% chromium and 1% molybdenum in the content make the pipes strong and corrosion resistant. The material is resistant to wearing and high temperature creeping. The ASTM A335 P91 Pipe is non – deteriorating, has decreased thickness and higher creep strength. The applications of the pipes are seen mostly in power generation, petrochemicals, heaters and reheat liners, boilers and in oil services.


The A335 P91 Material has carbon, manganese, phosphorus, sulfur, silicon, chromium, molybdenum, vanadium, nitrogen, nickel, aluminum, columbium, titanium and zirconium in the composition. There are seamless and welded pipe types. The seamless pipes are drawn from a single billet of the raw material while the ASTM A335 Gr P91 Welded Pipe is welded from a strip or sheet. The welding can be spiral or longitudinal from end to end to produce the pipe. The pipes have 415MPa minimum yield strength and 585MPa minimum tensile strength. Please feel free to contact us for more information on the Alloy Steel P91 ERW Pipe and pricing.

ASME SA335 Grade P91 Alloy Steel Pipe Specification Format

Size in Inch 1/8NB TO 24NB inch
ASTM Standards ASTM A 335, and ASME SA 335
Type Seamless Pipes
Specialized in Size Large Diameter Size
Outer Dimensions Chart 19.05milimeter – 114.3milimeter
Wall Thickness Chart 2.0milimeter – 14 milimeter
Length in milimeter max 16000milimeter
Schedule Chart Schedule 20 - XXS up to 250 milimeter thk.
Pipe Form Round, Rectangular, Square, Hydraulic Etc.
Length Single, Double Random & Cut to Length.
Pipes & Tube End Plain, Beveled, Treaded.

Accept all small/ Large Orders Alloy Steel P91 ERW Pipe, Alloy Steel Gr.P91 Square Pipes, P91 AS Hexagonal Pipe available in a wide range of shapes

Heat Treatment Chart of ASTM A335 P91 Pipe

P5, P9, P11, and P22
Grade Chet Heat Treatment Type Normalize Temp Range F [C] Annealing and Tempering Temp Range F [C]
P5 (b,c) Isothermal or Full Anneal
Temper and Normalize ***** 1250 [675]
Subcritical Anneal (P5c only) ***** 1325 - 1375 [715 - 745]
P9 Isothermal or Full Anneal
Temper and Normalize ***** 1250 [675]
P11 Isothermal or Full Anneal
Temper and Normalize ***** 1200 [650]
P22 Isothermal or Full Anneal
Temper and Normalize ***** 1250 [675]
P91 Temper and Normalize 1900-1975 [1040 - 1080] 1350-1470 [730 - 800]
Temper and Quench 1900-1975 [1040 - 1080] 1350-1470 [730 - 800]

Tesile Chart of A335 P91 Material

Seamless Pipe
P5 P9 P11 P22 P91
Tensile Strength, minimum., psi
ksi 60 60 60 60 85
MPa 415 415 415 415 585
Yield Strength, minimum., psi
ksi 30 30 30 30 60
MPa 205 205 205 205 415

Chemical Properties of ASTM A335 Gr P91 Welded Pipe

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

Mechanical And Physical Properties of Alloy Steel P91 ERW Pipe

Tensile Strength , MPa A335 P91 Yield Strength, MPa Elongation, % A335 P91 Hardness, HB
585 min 415 min 20 min 250 max

List Of Alloy Steel Gr.P91 Square Pipes Types

ASTM A335 P91 High Alloy Seamless Steel Pipe

ASTM A335 P91 High Alloy Seamless Steel Pipes

astm a335 p91 hollow structral seamless steel pipes

astm a335 p91 hollow structral seamless steel pipes

ASTM A335 P91 Welded Pipe, Size: 1/2 Inch, 3/4 Inch, 1 Inch

ASTM A335 P91 Welded Pipes, Size: 1/2 Inch, 3/4 Inch, 1 Inch

Black ASTM A335 P91 Alloy Pipe,  3 Mm

Black ASTM A335 P91 Alloy Pipes, 3 Mm

3m, 6m Round Alloy Steel ASTM A335 P91 Pipes

3m, 6m Round Alloy Steel ASTM A335 P91 Pipes

1/2 inch P11 Alloy Steel Seamless Pipe

1/2 inch P11 Alloy Steel Seamless Pipes

Round ASTM A335 P91 UNS K91560 Alloy Steel ERW Pipe

Round ASTM A335 P91 UNS K91560 Alloy Steel ERW Pipes

1/2inch Alloy Steel ASTM A335 P91 Seamless Steel Pipes

1/2inch Alloy Steel ASTM A335 P91 Seamless Steel Pipes

2 inch Black P11 Alloy Steel Seamless Pipe

2 inch Black P11 Alloy Steel Seamless Pipes

a355 p91 alloy 12 inch seamless steel pipe

a355 p91 alloy 12 inch seamless steel pipes

ASTM a355 p91 pipe 1/2inch to 24 inch SCh 40 SCH 80 SCH 120

ASTM a355 p91 pipes 1/2inch to 24 inch SCh 40 SCH 80 SCH 120

1.5mm Thick A335 P91 Material

1.5mm Thick A335 P91 Material

Equivalent Of P91 AS Hexagonal Pipe

ASTM ASME A335 Gr P91 Equivalent Material JIS UNS
A335 P91 SA335 P91 T91, K90901, X10CrMoVNb9-1, 1.4903 G 3458 K91560
ASTM International BSi - British Standards institute Material
ASTM A335 Gr. P5 Pipe 3604/625 5% Cr 1/2% Mo
ASTM A335 Gr. P9 Pipe 3604/629 9% Cr 1% Mo
ASTM A335 Gr. P11 Pipe 3604/621 1 1/4% Cr 1/2% Mo
ASTM A335 Gr. P12 Pipe 3604/620 1% Cr 1/2% Mo
ASTM A335 Gr. P22 Pipe 3604/622 2 1/4% Cr 1% No
Buy ANSI B16.5 ASTM A335 Alloy Steel P91 Rectangular Pipes, UNS K11522 High Pressure Pipe in India, Check Dimension & sizes of Alloy Steel traingular Pipe

Alloy Steel Grade P91 Pipe Size In Inch

O.D. x Thickness(mm) O.D x Thickness(mm) O.D x Thickness(mm)
38.1 x 3.2 57.0 x 4.9 76.2 x 4.0
38.1 x 4.0 57.0 x 6.3 76.2 x 5.0
38.1 x 6.3 57.0 x 7.9 76.2 x 6.3
42.4 x 3.2 60.3 x 3.2 82.5 x 4.5
42.4 x 4.0 60.3 x 3.6 88.9 x 3.2
44.5 x 3.2 60.3 x 5.0 88.9 x 3.6
44.5 x 6.3 63.5 x 3.2 88.9 x 4.0
48.3 x 3.2 63.5 x 3.6 101.6 x 3.6
48.3 x 3.6 63.5 x 4.0 101.6 x 4.5
50.8 x 4.5 63.5 x 6.3 101.6 x 6.3
51.0 x 3.2 63.5 x 7.9 114.3 x 3.6
51.0 x 3.6 70.0 x 3.2 114.3 x 5.0
51.0 x 6.3 70.0 x 3.6 139.7 x 4.0
57.0 x 3.2 70.0 x 6.3 139.7 x 5.0
57.0 x 3.6 76.2 x 3.6 139.7 x 6.3
Alloy Steel P91 EFW Pipes, AS P91 Bush Hex Pipe Thickness 9.0mm, Check Alloy Steel Grade P91 Pipe on Sale

thickness of Alloy Steel P91 EFW Pipes

NPS [DN] Designator Tolerance, % from Specified
Over Under
1/8 to 2 1/2 [6 to 65] incl., all t/D ratios 20.0% 12.5%
Above 2 1/2 [65], t/D < or = 5% 22.5% 12.5%
Above 2 1/2 [65], t/D > 5% 15.0% 12.5%
(t = Specified Wall Thickness; D = Specified Outside Diameter)

ASTM A335 Alloy Steel P91 Rectangular Pipes Price per kg

Size MSL Make ISMT make JSL Make
1/2" 4,265.71 4,253.35 4,27.06
3/4" 4,04.12 4,036.76 4,051.47
1" 3,897.06 3,889.71 3,904.41
1.25" 3,852.94 3,845.59 3,860.29
1.5" 3,750.00 3,742.65 3,757.35