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ASME SA335 P9 Seamless Ferritic Alloy Steel Pipe for High Temperature Service

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ASME SA335 P9 Seamless Ferritic Alloy Steel Pipe for High Temperature Service

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Brand Name :	YUHONG
Model Number :	ASME SA335 P9
Certification :	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Price :	Negotiable
Payment Terms :	L/C, T/T
Supply Ability :	1500 tons per month
Delivery Time :	15-30days

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ASME SA335 P9 Seamless Ferritic Alloy Steel Pipe for High Temperature Service

ASME SA335 P9 Seamless Ferritic Alloy Steel Pipe for High Temperature Service

YUHONG GROUP is a specialized manufacturer of high-grade alloy steel pipes with over 30 years of experience in serving the global energy and petrochemical industries. Our ASME SA335 P9 Seamless Ferritic Alloy Steel Pipes are engineered for critical high-temperature applications, manufactured under strict quality control with full compliance to ASME and ASTM standards.

Heat Treatment Specifications for ASME SA335 P9 Alloy Steel Pipe

Parameter	Requirement	Notes
Grade	P9 (9Cr-1Mo)	Ferritic alloy steel
Heat Treat Type	Normalize and Temper	Mandatory process
Normalizing Temperature	1900-1975°F (1040-1080°C)	Austenitizing range
Cooling Media	Air cooling	No forced cooling required
Tempering Temperature	1100°F min (595°C)	Subcritical annealing
Microstructure	Tempered martensite	Post-treatment verification

Chemical Composition Requirements for ASME SA335 P9 Alloy Steel Pipe

Element	UNS K90941	Requirement (%)	Notes
Carbon (C)	0.15	Max	-
Manganese (Mn)	0.30-0.60	Range	-
Phosphorus (P)	0.025	Max	-
Sulfur (S)	0.025	Max	-
Silicon (Si)	0.25-1.00	Range	-
Chromium (Cr)	8.00-10.00	Range	Key alloy element
Molybdenum (Mo)	0.90-1.10	Range	Key alloy element

Mechanical Properties of ASME SA335 P9 Alloy Steel Pipe

Property	Requirement	Unit	Notes
Tensile Strength (min)	60	ksi	Equivalent to 415 MPa
Yield Strength (min)	30	ksi	Equivalent to 205 MPa
Material Grade	P9 (Other Category)	-	9Cr-1Mo Alloy Steel

Applications of ASME SA335 P9 Alloy Steel Pipe

1. High-Temperature Pressure Systems

Steam piping networks in power plants

Process piping for refineries and petrochemical facilities

2 . General Industrial Services

Medium-temperature heat exchangers

Utility piping system

Advantages of ASME SA335 P9 Alloy Steel Pipe

Benefit	Technical Superiority
Standard Compliance	Meets minimum tensile and yield requirements per ASME SA335
Reliable Performance	Proven mechanical properties for non-critical elevated temperature services
Material Flexibility	Suitable for applications not requiring advanced alloy grades
Cost-Effective	Economical alternative where ultra-high strength is unnecessary

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