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ASTM A 335 P-11/ T-11

ASTM A335 P11 Seamless Pipe


ASTM A335 P11 Seamless Pipe is made up of a carbon steel that has 415MPa minimum tensile strength 205MPa minimum yield strength. The material has high toughness and high wear and tear resistance.

Tensile Chart of P11 Alloy Steel Welded Pipe

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

ASTM A335 P11 ERW Pipe Chemical Structure

C, % S, % Si, % Mn, % P, % Cr, % Mo, %
0.015 Maximum 0.025 Maximum 0.50 Maximum 0.30-0.60 0.025 Maximum 4.00-6.00 0.45-0.65

Alloy Steel P11 EFW Pipes Mechanical Properties Table

Tensile Strength, in MPa Yield Strength, in MPa Elongation, %
415 minimum 205 minimum 30 minimum

Heat Treatment of ASTM A335 P11 Alloy Steel 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]

ASTM A335 P11 Pipe Specification Chart

Size 1/2 to 36 Inch NB
Standard ASTM A335 P11, SA335 P11
Material Thickness 3 To 12 mm
Schedules SCH 40, SCH 160, SCH 80, SCH XXS, SCH XS, All Schedules
Tolerance Cold drawn pipe: +/-0.1mm
Cold rolled pipe: +/-0.05mm
Type ERW / Seamless / Welded / Fabricated
Craft Cold rolled and Cold drawn
Length Standard
Double &
In Cut length also.
pipe available in Form of Round, Rectangular, Square, Hydraulic
End Beveled End, Plain End, Treaded
Pipes :- ASTM A335 GR P5 | GR P9 | GR P11 | P12 | GR P5 | GR T11 | P92.
Size Range: 1/2" - 24"
Schedules: 20, 30, 40, Standard (STD), 60, Extra Heavy (XS), 80, 100, 120, 140, 160, XXS

Tubes :- ASME SA213 Grade T11, T12, T11, T11, T11, T111, T112
Size Range: 12.7MM OD TO 168.7 MM OD
Thickness: 2MM TO 16MM THK

Chemical Requirements


Grade
T-5 T-9 T-11 T-22 T-91 T-91 shall also include the following:
Element UNS Designation K41545 S50400 K11597 K21590 K91560
Carbon 0.15 max 0.15 max 0.05 - 0.15 0.05 - 0.15 0.08 - 0.12 V at 0.18 - 0.25
Manganese 0.30 - 0.60 0.30 - 0.60 0.30 - 0.60 0.30 - 0.60 0.30 - 0.60 N at 0.030 - 0.070
Phosphorous, max 0.025 0.025 0.025 0.025 0.020 Ni at 0.40 max
Sulfur, max 0.025 0.025 0.025 0.025 0.010 Al at 0.02 max
Silicon 0.50 max 0.25 - 1.00 0.50 - 1.00 0.50 max 0.20 -0.50 Cb at 0.06 - 0.10
Chromium 4.00 - 6.00 8.00 - 10.00 1.00 - 1.50 1.90 - 2.60 8.00 - 9.50 Ti at 0.01 max
Molybdenum 0.45 -0.65 0.90 - 1.10 0.44 - 0.65 0.87 - 1.13 0.85 - 1.05 Zr at 0.01 max

Physical Properties

  P-5 P-9 P-11 P-22 P-91 T11 shall not have a hardness not exceeding 250 HB/265 HV [25HRC].
Tensile Strength, min., psi          
ksi 60 60 60 60 85
MPa 415 415 415 415 585  
Yield Strength, min., psi            
ksi 30 30 30 30 60  
MPa 205 205 205 205 415  

ASTM A 335 P-22/ T-22

ASTM A335 P22 Seamless Pipe is also known as the 2 ¼ chrome pipes. The material is a carbon steel with added chromium, molybdenum and vanadium at some instances. The chromium content is responsible for the added high temperature strength in the ASME SA335 Grade P22 Alloy Steel Pipe SCH 40 and other schedules.
The material has high creep resistance and corrosion resistance. The molybdenum content provides the creep resistance and the pitting resistance to the pipes. The ASTM A335 P22 Pipe is applicable in high temperature services. The high temperature service ability comes from the composition. The composition of the ASTM A335 P22 Welded Pipe has carbon, manganese, phosphorus, sulfur, silicon, chromium and molybdenum in it.

Grade P22 Alloy Steel Pipe SCH 40 Specification Chart

Size in Inch 1/8NB TO 24NB inch
ASTM Standards ASTM A 335, and ASME SA 335
Type Seamless Pipe
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.
Pipe & Tube End Plain, Beveled, Treaded.

ASTM A335 P22 Pipe Size Chart

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

ASTM A335 Gr P22 ERW Pipe Equivalent

ASTM ASME ASTM A335 Gr P22 Equivalent material JIS G 3458 UNS BS DIN ISO ABS NK LRS
A335 P22 SA335 P22 T22, 10CrMo910, 10CrMo9-10, 1.7380, 11CrMo9-10, 1.7383 STPA 24 K21590 3604 P1 622 17175 10CrMo910 2604 II TS34 ABS 13 KSTPA 24 Sec 2 2-1/4Cr1Mo410
ASTM International BSi - British Standards institute Material
ASTM A335 Gr. P5 Pipes 3604/625 5% Cr 1/2% Mo
ASTM A335 Gr. P9 Pipes 3604/629 9% Cr 1% Mo
ASTM A335 Gr. P11 Pipes 3604/621 1 1/4% Cr 1/2% Mo
ASTM A335 Gr. P12 Pipes 3604/620 1% Cr 1/2% Mo
ASTM A335 Gr. P22 Pipes 3604/622 2 1/4% Cr 1% No

Heat Treatment of ASTM A335 P22 material

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 Alloy Steel P22 Pipe

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

Alloy Steel P22 Bush Hex Pipe Chemical Composition Standard

C, % Mn, % P, % S, % Si, % Cr, % Mo, %
0.015 max 0.30-0.61 0.025 max 0.025 max 0.50 max 1.90-2.60 0.87-1.13

Alloy Steel P22 Chrome Moly Pipe Mechanical Strength

Tensile Strength, MPa A335 P22 Yield Strength, MPa Elongation, %
415 min 205 min 30 min

ASTM A335 P5/T-5

ASTM A335 P5 Seamless Pipe comes under the ASTM A335 specification and it has dimensions according to the ASTM, ASME and API standards. The pipes range in nominal bore sizes from 1/8 inches to 30 inches.The schedules vary according to the nominal bore sizes in relation to the wall thicknesses. The schedules range from sch20 through XXS. The pipes range in length up to 13500mm. There are seamless and fabricated pipes in this specification. The ASTM A335 P5 Pipe can be round, hydraulic, rectangular, square or hexagonal in form. The length of the pipes can also be custom required cut to length sizes.

ASME SA 335 Grade P5 ERW Pipe Schedule

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

Material Specification Chart of Alloy Steel P5 Material

Size in Inch 1/8NB TO 24NB inch
ASTM Standards ASTM A 335, and ASME SA 335
Type Seamless Pipe
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.
Pipe & Tube End Plain, Beveled, Treaded.

p5 Alloy Steel Pipes Thickness Chart

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)

Composition Chart of ASTM A335 P5 Welded Pipe

Alloy Steel P5 C Cr S Si Mn Mo P
0.05 – 0.15 1.00 – 1.50 0.025 max 0.50 – 1.00 0.30 – 0.60 0.44 – 0.65 0.025 max

Alloy Steel Grade P5 Pipe Mechanical Properties Chart

Tensile Strength, MPa Yield Strength, MPa Elongation
415 min 205 min 30 min

Alloy Steel Gr.P5 Pipes Equivalent Material Grade

ASTM ASME JIS G 3458 UNS BS DIN ISO ABS NK LRS
A335 P5 SA335 P5 STPA 25 K41545 3604 P1 625 2604 III TS37 ABS 14

Alloy Steel P5 Chrome Moly Pipe Tensile

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

P5 Alloy Steel Seamless Pipe Heat Treatment

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]

 

 

 

 

ASTM A 335 P-9 & P-91

ASTM A335 Grade P9 and P91 are part of the ASTM A335 specification, which covers seamless ferritic alloy-steel pipe intended for high-temperature service. These materials are primarily used in power plants, refineries, petrochemical plants, and boiler systems, where resistance to high pressure and high temperature is critical.Grade P9 is an alloy steel containing chromium (8-10%) and molybdenum (0.90-1.10%), which gives it excellent resistance to oxidation, corrosion, and creep at elevated temperatures. It offers good weldability and is commonly used in superheater tubes, reheater tubes, and steam piping. The mechanical properties of P9 include a minimum tensile strength of 415 MPa and a minimum yield strength of 205 MPa.

ASTM A 335 P-9 & P-91 ERW Pipe Schedule

NPS OD (in) SCH 40 (Std) SCH 80 (XS) SCH 160 SCH XXS
1/2" 0.84 0.109 0.147 0.187 0.294
3/4" 1.05 0.113 0.154 0.218 0.308
1" 1.315 0.133 0.179 0.250 0.358
1 1/2" 1.9 0.145 0.2 0.281 0.4
2" 2.375 0.154 0.218 0.343 0.436
3" 3.5 0.216 0.3 0.437 0.6
4" 4.5 0.237 0.337 0.531 0.674
6" 6.625 0.28 0.432 0.718 0.864
8" 8.625 0.322 0.5 0.906 1.0
10" 10.75 0.365 0.593 1.125 —
12" 12.75 0.375 0.687 1.312 —
14" 14.0 0.375 0.75 1.437 —
16" 16.0 0.375 0.843 1.593 —
18" 18.0 0.375 0.937 1.781 —
20" 20.0 0.375 1.031 1.968 —
24" 24.0 0.375 1.218 2.343 —

Material Specification Chart

ASTM Spec Material Grade Type Key Alloying Elements Application
A106 Gr. A, B, C Carbon Steel, Seamless Carbon, Manganese High-temp service (boilers, pipelines)
A53 Gr. A, B Carbon Steel, Seamless/Welded Carbon, Manganese Water, gas, steam, air lines
A333 Gr. 1 – Gr. 9 Low Temp Carbon Steel Nickel (in some grades) Cryogenic & low-temp service
A335 P1, P5, P9, P11, P22, P91 Alloy Steel, Seamless Chromium, Molybdenum, Vanadium High-temp, high-pressure (power plants)
A312 TP304, TP316, etc. Stainless Steel Chromium, Nickel, Molybdenum Corrosive environments (chemical plants)
A519 1020, 4130, etc. Carbon/Alloy Mech. Tubing Varies Mechanical and structural use
A179 — Carbon Steel (Seamless Tubes) Carbon, Manganese Heat exchangers, condensers
A192 — Carbon Steel (Boiler Tubes) Carbon, Manganese High-pressure boiler tubes
A210 Gr. A1, C Carbon Steel (Boiler Tubes) Carbon, Manganese Boiler and superheater tubes
A213 T2, T5, T11, T22, T91 Alloy Steel (Boiler Tubes) Chromium, Molybdenum Heat exchangers, superheaters
API 5L Gr. B, X42–X80 Carbon Steel, Seamless/Welded Carbon, Manganese Pipeline transport (oil, gas, water)

ASTM A 335 P-9 & P-91 Pipe Sizes In Mm

NPS (in) OD (mm) SCH 40 (WT mm) SCH 80 (WT mm)
1/2" 21.34 2.77 3.73
3/4" 26.67 2.87 3.91
1" 33.40 3.38 4.55
1 1/4" 42.16 3.56 4.85
1 1/2" 48.26 3.68 5.08
2" 60.33 3.91 5.54
2 1/2" 73.03 5.16 7.01
3" 88.90 5.49 7.62
4" 114.30 6.02 8.56
5" 141.30 6.55 9.53
6" 168.28 7.11 10.97
8" 219.08 8.18 12.70
10" 273.05 9.27 15.09
12" 323.85 9.53 17.48
14" 355.60 9.53 11.13
16" 406.40 9.53 12.70
18" 457.20 9.53 14.27
20" 508.00 9.53 15.09
24" 609.60 9.53 17.48

Composition Chart of ASTM A 335 P-9 & P-91 Welded Pipe

Element P9 (% by weight) P91 (% by weight)
Carbon (C) 0.15 – 0.25 0.08 – 0.12
Manganese (Mn) 0.30 – 0.60 0.30 – 0.60
Phosphorus (P) ≤ 0.025 ≤ 0.020
Sulfur (S) ≤ 0.025 ≤ 0.010
Silicon (Si) 0.25 – 1.00 0.20 – 0.50
Chromium (Cr) 8.00 – 10.00 8.00 – 9.50
Molybdenum (Mo) 0.90 – 1.10 0.85 – 1.05
Nickel (Ni) — ≤ 0.40
Vanadium (V) — 0.18 – 0.25
Niobium (Nb) (Columbium) — 0.06 – 0.10
Nitrogen (N) — 0.03 – 0.07
Aluminum (Al) — ≤ 0.04