ASME SA335 P91 Alloy Steel Boiler Tube For Boiler, Superheater

MOQ： 500 KGS
Price： Negotiable
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Payment Terms	T/T, L/C at sight
Supply Ability	1000 TONS / month
Delivery Time	Depends on order quantity
Packaging Details	Steel frame wooden case with plastic cap
Standard	A335 / SA335
OD	10.3 – 114.3 mm
WT	1.5 – 15 mm
Material	P91
Brand Name	YUHONG
Model Number	ASTM A335 / ASME SA335
Certification	ISO 9001/TUV/PED
Place of Origin	China

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Product Specification


Payment Terms	T/T, L/C at sight	Supply Ability	1000 TONS / month
Delivery Time	Depends on order quantity	Packaging Details	Steel frame wooden case with plastic cap
Standard	A335 / SA335	OD	10.3 – 114.3 mm
WT	1.5 – 15 mm	Material	P91
Brand Name	YUHONG	Model Number	ASTM A335 / ASME SA335
Certification	ISO 9001/TUV/PED	Place of Origin	China
High Light	ASME SA335 P91 alloy steel boiler tube ，high-temperature boiler superheater tube ，P91 steel boiler tube with warranty

ASME SA335 P91 Alloy Steel Boiler Tube For Boiler, Superheater

ASME SA335 P91 is a high-performance alloy steel tube widely used in power generation and petrochemical industries due to its excellent high-temperature strength, corrosion resistance, and ability to withstand extreme pressures. It is part of the ASTM/ASME P-series of chrome-moly (chromium-molybdenum) alloy steel pipes, specifically designed for boiler, superheater, and reheater applications.

Key Features of ASME SA335 P91

High-Temperature Resistance:
- P91 steel exhibits exceptional performance at elevated temperatures, offering creep resistance and maintaining structural integrity in extreme conditions.
- This makes it suitable for power plants and industries where boilers and turbines frequently operate over 600 °C (1112 °F).
Enhanced Strength:
- With its high chromium (9%) and molybdenum (1%) content, this alloy achieves superior mechanical strength.
- Other alloying elements, such as carbon, vanadium, and niobium, contribute to its enhanced hardness and tensile strength.
Corrosion and Oxidation Resistance:
- The chromium content provides excellent resistance to oxidation and corrosion, even in aggressive chemical environments.
- It extends the service life of components exposed to flue gases, steam, and other harsh operating conditions.
Long-Term Creep Strength:
- P91 alloy steel offers significant resistance to deformation under prolonged thermal loads, making it ideal for high-pressure steam pipelines and boiler systems.
Weldability:
- The material is weldable, though welding requires strict preheating and post-weld heat treatments (PWHT) to prevent failures due to the formation of martensite or other defects.

Chemical Composition (Per ASME SA335 Specification)

Element	Percentage (%)
Carbon (C)	0.08 – 0.12
Manganese (Mn)	0.30 – 0.60
Phosphorus (P)	≤ 0.020
Sulfur (S)	≤ 0.010
Silicon (Si)	0.20 – 0.50
Chromium (Cr)	8.00 – 9.50
Molybdenum (Mo)	0.85 – 1.05
Vanadium (V)	0.18 – 0.25
Niobium (Nb)	0.06 – 0.10
Nitrogen (N)	0.03 – 0.07

Mechanical Properties

Property	Value
Tensile Strength (MPa)	≥ 585
Yield Strength (MPa)	≥ 415
Elongation (%)	≥ 20
Hardness	≤ 250 HBW (Brinell Hardness)

Applications

Power Generation:
- Widely used in steam plants, nuclear reactors, and gas turbine components where high thermal and mechanical stress is common.
- Ideal for headers, main steam lines, and reheater tubes.
Oil and Gas Industry:
- Suitable for petroleum refineries due to its resistance to high temperatures and corrosion.
- Frequently employed in fluidized bed combustors and heat exchangers.
Chemical Industry:
- Utilized in chemical reactors and processing units where high pressure and caustic substances are involved.
Boiler Manufacturing:
- ASME SA335 P91 tubes are central to the development of water-wall tubes, economizers, and superheater systems.

Company Details

Bronze Gleitlager

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Business Type:

Manufacturer,Exporter,Trading Company,Seller 
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Year Established:

1990 
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Total Annual:

50M-75M
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Employee Number:

50~850 
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Ecer Certification：

Verified Supplier 

Yuhong Holding Group equipments production base at Jiangsu Jiangyin City, Jinjiang City and Yancheng City. Total production area around 184000 square meters, main products : Heat Exchanger, Condenser, Pressure Vessel , Fired Heater, Economizer, Columns, Reactor. ... Yuhong Holding Group equipments production base at Jiangsu Jiangyin City, Jinjiang City and Yancheng City. Total production area around 184000 square meters, main products : Heat Exchanger, Condenser, Pressure Vessel , Fired Heater, Economizer, Columns, Reactor. ...

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20 Floor, No.1 New World Building, NO.1018 Min'an Road, Yinzhou District, Ningbo, China, ZIP:315040
https://www.tema-heatexchanger.com/

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