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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.
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.
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. |
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] |
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 |
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 |
Tensile Strength , MPa | A335 P91 Yield Strength, MPa | Elongation, % | A335 P91 Hardness, HB |
---|---|---|---|
585 min | 415 min | 20 min | 250 max |
ASTM A335 P91 High Alloy Seamless Steel Pipes
astm a335 p91 hollow structral seamless steel pipes
ASTM A335 P91 Welded Pipes, Size: 1/2 Inch, 3/4 Inch, 1 Inch
Black ASTM A335 P91 Alloy Pipes, 3 Mm
3m, 6m Round Alloy Steel ASTM A335 P91 Pipes
1/2 inch P11 Alloy Steel Seamless Pipes
Round ASTM A335 P91 UNS K91560 Alloy Steel ERW Pipes
1/2inch Alloy Steel ASTM A335 P91 Seamless Steel Pipes
2 inch Black P11 Alloy Steel Seamless Pipes
a355 p91 alloy 12 inch seamless steel pipes
ASTM a355 p91 pipes 1/2inch to 24 inch SCh 40 SCH 80 SCH 120
1.5mm Thick A335 P91 Material
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 |
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 |
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) |
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 |