MachineU > China Products > Minerals & Metallurgy > Carbon Steel > Steel Pipes > Seamless Steel Pipes
ASTM A335 / ASME SA335 P91 K90901 / 1.4903Alloy Steel Seamless Pipe
ASTM A335 / ASME SA335 P91 K90901 / 1.4903Alloy Steel Seamless Pipe
ASTM A335 / ASME SA335 P91 K90901 / 1.4903Alloy Steel Seamless Pipe
ASTM A335 / ASME SA335 P91 K90901 / 1.4903Alloy Steel Seamless Pipe
ASTM A335 / ASME SA335 P91 K90901 / 1.4903Alloy Steel Seamless Pipe
ASTM A335 / ASME SA335 P91 K90901 / 1.4903Alloy Steel Seamless Pipe
ASTM A335 / ASME SA335 P91 K90901 / 1.4903Alloy Steel Seamless Pipe
ASTM A335 / ASME SA335 P91 K90901 / 1.4903Alloy Steel Seamless Pipe
Specifications
Brand Name :
YUHONG
Model Number :
ASTM A335/ASME SA335 P91 Alloy Steel Seamless Pipe
Certification :
ISO9001-2008, API 5L, API 5CT, PED, AD-2000, EN10204-3.1B
Place of Origin :
China
MOQ :
1pc
Payment Terms :
L/C, T/T
Delivery Time :
7days
Packaging Details :
Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Product Name :
Alloy Steel Seamless Pipe
Standard :
ASTM A335 / ASME SA335
Material :
Gr. P5, P9, P11, P12, P21, P22 , P91
O.D. :
1/2" TO 24 "
Length :
Single Random, Double Random & Cut Length
End :
Plain End, Beveled End
Type :
Seamless
Packaging :
Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Application :
power industry, petrochemical plants, boiler tube, oil & gas application
High Light :
ASTM A335 P91 Alloy Steel Seamless Pipe
Description

ASTM A335 / ASME SA335 P91 Alloy Steel Seamless Pipe for High-Temperature Service​

ASTM A335/SA335 P91 is a ferritic alloy steel that has very high strength properties, which do not deteriorate with time, and are creep resistant. It is also called 9 Cr 1 Mo steel, or chrome moly pipe, based on its composition. Alloy P91 pipe is primarily composed of chromium (Cr), molybdenum (Mo), and vanadium (V) as key alloying elements. The specific composition of P91 typically includes around 9% chromium and 1% molybdenum, in addition to other elements like carbon, manganese, silicon, and nitrogen. Other alloy grades may have different compositions tailored for specific applications.

Main Materials

ASTM A335 (Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service)

ASTM A335 P1, P2, P5, P9, P12, P11, P22, P91

ASTM 213(Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes)
ASTM A213 T1, T2, T11, T5, T9, T22, T23, T91, T92

A335 Grade P91 Pipe Equivalent Material

ASTM ASME Equivalent material
A335 P 91 ASME SA 335 P91 1.4903, K90901, X10CrMoVNb9-1

A335 Grade P91 Pipe Equivalent Material Chemical Requirements

Element Grade P-5 P-9 P-11 P-22 P-91 P-91 shall also include the following:
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

Mechanical Properties
Grade Tensile strength(MPa) Yield strength(MPa) Elongation(%) Impact energy(J) Hardness
P11 ≥ 415 ≥ 205 ≥ 22 ≥ 35 ≤ 163HB
P12 ≥ 415 ≥ 220 ≥ 22 ≥ 35 ≤ 163HB
P22 ≥ 415 ≥ 205 ≥ 22 ≥ 35 ≤ 163HB
P5 ≥ 415 ≥ 205 ≥ 22 ≥ 35 ≤ 187HB
P91 585~760 ≥ 415 ≥ 20 ≥ 35 ≤ 250HB
P92 ≥ 620 ≥ 440 ≥ 20 ≥ 35 250HB

The difference between alloy P91 pipe and other alloy grades commonly used in the industry:

  1. Alloy Composition: Alloy P91 pipe is primarily composed of chromium (Cr), molybdenum (Mo), and vanadium (V) as key alloying elements. The specific composition of P91 typically includes around 9% chromium and 1% molybdenum, in addition to other elements like carbon, manganese, silicon, and nitrogen. Other alloy grades may have different compositions tailored for specific applications.

  2. High-Temperature Strength: One of the main differentiating factors of P91 is its exceptional strength at elevated temperatures. It offers superior creep strength and resistance to thermal fatigue compared to many other alloy grades. This makes it suitable for high-temperature applications in power plants, boilers, and petrochemical industries.

  3. Carbon Content: P91 has a higher carbon content compared to some other alloy grades, which contributes to its increased strength and hardness. However, this higher carbon content also leads to challenges during welding, requiring precise control of heat input and post-weld heat treatment.

  4. Fabrication and Weldability: Alloy P91 has specific requirements when it comes to fabrication and welding. It necessitates precise preheating, interpass temperature control, and post-weld heat treatment to avoid detrimental effects on the material's microstructure and properties. Other alloy grades may have different welding procedures and considerations.

Application

A335/SA335 P91 is suitable for bending, flanging (vanstoning), and similar forming operations and for fusion welding. Its commonly used in below usages.

  1. Power Generation

  2. Oil and Gas Industry

  3. Chemical Processing

  4. Industrial Boilers

  5. Heat Exchangers

ASTM A335 / ASME SA335 P91 K90901 / 1.4903Alloy Steel Seamless Pipe

Product tags

astm a53 steel pipe

,

astm a 106 pipe

,

astm a106 sch160 seamless pipe
Send your message to this supplier
Send Now

ASTM A335 / ASME SA335 P91 K90901 / 1.4903Alloy Steel Seamless Pipe

Ask Latest Price
Watch Video
Product Detail
Brand Name :
YUHONG
Model Number :
ASTM A335/ASME SA335 P91 Alloy Steel Seamless Pipe
Certification :
ISO9001-2008, API 5L, API 5CT, PED, AD-2000, EN10204-3.1B
Place of Origin :
China
MOQ :
1pc
Payment Terms :
L/C, T/T
Contact Supplier
video
ASTM A335 / ASME SA335 P91 K90901 / 1.4903Alloy Steel Seamless Pipe
ASTM A335 / ASME SA335 P91 K90901 / 1.4903Alloy Steel Seamless Pipe
ASTM A335 / ASME SA335 P91 K90901 / 1.4903Alloy Steel Seamless Pipe
ASTM A335 / ASME SA335 P91 K90901 / 1.4903Alloy Steel Seamless Pipe

Yuhong Group Co.,Ltd

Verified Supplier
13 Years
zhejiang, ningbo
Since 2007
Business Type :
Manufacturer, Distributor/Wholesaler, Importer, Exporter, Trading Company, Seller, Other
Main Products :
Stainless Steel Seamless Pipe, Stainless Steel Seamless Tube, Duplex Stainless Steel Pipe
Total Annual :
50M-70M
Employee Number :
50~850
Certification Level :
Verified Supplier
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products Alloy Steel Tube
MachineU China Products Minerals & Metallurgy Carbon Steel Steel Pipes Seamless Steel Pipes
Contact Supplier
Submit Requirement