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P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard
P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard
P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard
P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard
Specifications
Brand Name :
NEW FORCE
Model Number :
48''
Certification :
MTC
Place of Origin :
China
MOQ :
10 tons or negotiable
Payment Terms :
L/C, T/T
Supply Ability :
200000 tons per month
Delivery Time :
5~10 weeks
Packaging Details :
bare and loose
Steel :
Alloy Steel
Application :
High Pressure Boiler
Material :
P91
Standard :
ASTM A335
Size :
1219mm x 140mm
OD :
48''
Description

P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard

Grade 91 contains 9 % Chromium and 1 % Molybdenum compared to 2.5 % Chromium in the next best P22 grade. Chromium improves high temperature strength and increases oxidation resistance. Molybdenum increases the creep resistance. Also present are smaller quantities of Nickel and Manganese which increase the hardenability of the steel.

More important than the alloying elements is the formation of this alloy steel. The steel is formed by normalizing at 1050 °C, air cooling down to 200 °C. It is then tempered by heating to 760 °C. The temperatures and the cooling rates are very important. This produces the microstructure that results in the high creep strength properties.

1. Standards

ASTM A335 ——Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service

2. Application

For the high-pressure boiler and steam pipes, and the petrochemical industry pipes;
Power plant; Chemical Fertilizer; Petrochemicals; Offshore Oils; Gas Productions; Refineries and etc.

3. Dimensional Tolerance

Pipe types OD (mm) Tolerance WT (mm) Tolerance
High Pressure Boiler Tube 219~457 ±1.0％ ≤20 -10% ~ +12.5%
20~40 -10% +10%
457~1422 ±0.9％ ＞40~70 -7％, +9％
＞70~20 -6％, +8％

4. Chemical Composition:

Grade UNS Designation Composition, %
C Mn P S Si Cr Mo Ni V Others
P91 K91560 0.08-0.12 0.30-0.60 0.02 0.01 0.20-0.50 8.00-9.50 0.85-1.05 0.4 0.18-0.25 N 0.030-0.070
Al 0.02max
Cb 0.06-0.10
Ti 0.01 max
Zr 0.01max

6. Mechanical Properties

Steel pipes No. Tensile strength Yield strength Elongation Impact energy Hardness
(Mpa) (Mpa) (%) (J)
P91 585～760 ≥415 ≥20 ≥35 ≤250HB

7. Available Size Range:

OD Thickness
mm inch mm SCH
88.9~1422 3''~ 56'' 2.11~140 ≥SCH10
*If the steel grades and size you are looking for are not listed above, please contact us for further information.

MTC sample could be provided upon request.

For additional requirements on chemical composition, mechanical properties, and supplementary requirements, please contact us for customization!

P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard

Product tags

astm a192 alloy steel pipe

,

astm a335 p22 alloy pipe

,

pipe alloy 625
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P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard

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Product Detail
Brand Name :
NEW FORCE
Model Number :
48''
Certification :
MTC
Place of Origin :
China
MOQ :
10 tons or negotiable
Payment Terms :
L/C, T/T
Contact Supplier
P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard
P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard

Xi'an New Force Energy Engineering Co.,Ltd

Active Member
8 Years
Shaanxi
Since 2006
Business Type :
Manufacturer, Distributor/Wholesaler, Agent, Exporter, Trading Company, Seller, Other
Main Products :
Seamless Alloy Steel Pipe, Seamless Carbon Steel Pipe, Seamless Stainless Steel Pipe
Total Annual :
5000000-30000000
Certification Level :
Active Member
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