Name: ASTM A335 P91 & P92 Seamless Steel Tubes High Temperature Chromium Molybdenum Alloy for Supercritical Power Plants
Brand: Yuhong Group Co.,Ltd
SKU: ASTM A335 P91 & P92
Price: 1000000.00 USD
Availability: InStock

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ASTM A335 P91 & P92 Seamless Steel Tubes High Temperature Chromium Molybdenum Alloy for Supercritical Power Plants

Product Details:

Place of Origin:	CHINA
Brand Name:	YUHONG
Certification:	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number:	ASTM A335 P91 & P92

Payment & Shipping Terms:

Minimum Order Quantity:	500KGS
Price:	Negotiable
Packaging Details:	Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Delivery Time:	15-20 Days
Payment Terms:	L/C, T/T
Supply Ability:	800 Tons/ Month

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Detailed Product Description

Standard:	ASTM A335/ASME SA335	Material Grade:	P91 (UNS K91560) & P92 (UNS K92460)
Product Type:	Seamless Steel Tubes	Application:	Power Plant Boilers, High Temperature Piping
Size Range:	OD 1/2" To 24"	NDT Requirements:	UT, ET, HT Available
Highlight:	ASTM A335 P91 seamless steel tubes , high temperature chromium molybdenum alloy tubes , supercritical power plant alloy steel tubes

ASTM A335 P91 & P92 Seamless Steel Tubes High Temperature Chromium Molybdenum Alloy for Supercritical Power Plants

YUHONG GROUP is a specialized manufacturer with 35 years of experience in producing high-performance seamless steel tubes. Our ASTM A335 P91 & P92 chromium-molybdenum alloy tubes are engineered for supercritical power plants, offering exceptional high-temperature strength and oxidation resistance for global energy applications.

Chemical Composition Comparison: Grade P91 vs. P92

Element	P91 (UNS K90901) Requirement, %	P92 (UNS K92460) Requirement, %
Carbon (C)	0.08 - 0.12	0.07 - 0.13
Manganese (Mn)	0.30 - 0.60	0.30 - 0.60
Phosphorus (P), max	0.02	0.02
Sulfur (S), max	0.01	0.01
Silicon (Si)	0.20 - 0.50	0.50 max
Chromium (Cr)	8.00 - 9.50	8.50 - 9.50
Molybdenum (Mo)	0.85 - 1.05	0.30 - 0.60
Vanadium (V)	0.18 - 0.25	0.15 - 0.25
Niobium (Nb)	0.06 - 0.10	0.04 - 0.09
Nitrogen (N)	0.03 - 0.07	0.03 - 0.07
Nickel (Ni), max	0.4	0.4
Aluminum (Al), max	0.04	0.04
Tungsten (W)	-	1.50 - 2.00
Boron (B)	-	0.001 - 0.006

Heat Treatment Requirements: Grade P91 vs. P92

Parameter	P91 (Type 1 & 2)	P92	Key Notes
Grade	P91	P92	Both are high-strength creep-resistant alloy steels.
Heat Treat Type	Normalize and Temper or Quench and Temper	Normalize and Temper	A key difference: P91 allows for the alternative of Quenching.
Normalizing Temperature	1900-1975 °F [1040-1080 °C]	1900-1975 °F [1040-1080 °C]	The austenitizing temperature range is identical.
Cooling Media	Air or Accelerated Cooling	Air	P91 allows for accelerated cooling.
Tempering Temperature	1350-1470 °F [730-800 °C]	1350-1470 °F [730-800 °C]	The tempering temperature range is identical.
Tempering Temperature	1350-1470 °F [730-800 °C]	1350-1470 °F [730-800 °C]	P91: The maximum permissible tempering temperature is 1470 °F [800 °C].

Tensile Requirements Comparison: Grade P91 vs. P92

Property	P91 (Type 1 and Type 2)	P92	Notes
Grade	P91	P92, P93, P911, P36 Class 1	P92 shares its requirements with other advanced grades.
Tensile Strength, min	85 ksi	585 MPa	90 ksi
Yield Strength (0.2% Offset), min	60 ksi	415 MPa	64 ksi

Application Advantages of ASTM A335 P91 & P92 Seamless Steel Tubes

1. Excellent High-Temperature Performance
The P91 and P92 chromium-molybdenum alloy composition provides outstanding high-temperature strength and oxidation resistance, making them ideal for supercritical and ultra-supercritical power plants operating at temperatures up to 650°C.
2 . Superior Creep Resistance
These tubes offer excellent long-term creep resistance under high-temperature and high-pressure conditions, ensuring reliable performance in boiler systems, heat exchangers, and high-temperature piping applications.
3 . Enhanced Durability and Service Life
With superior resistance to thermal fatigue and oxidation, P91 and P92 tubes maintain structural integrity over extended periods, reducing maintenance requirements and increasing the lifespan of power generation equipment.
4. Global Standard Compliance
Manufactured in full compliance with ASTM A335/ASME SA335 international standards, these tubes are certified for use in critical applications worldwide, ensuring quality and safety across different markets.
5 . Wide Application Versatility
Suitable for various high-temperature environments, including power plant boilers, petrochemical processing units, and high-temperature pipeline systems, providing flexible solutions for diverse industrial needs.

ASTM A335 P91 & P92 Seamless Steel Tubes High Temperature Chromium Molybdenum Alloy for Supercritical Power Plants 0