Product Details
Company Profile

P91 Chrome Moly Pipe Cold Drawn Alloy Steel Seamless Pipe For High-Temperature Service

P91 Chrome Moly Pipe is a cold drawn alloy steel seamless pipe renowned for its excellent mechanical properties and superior performance in high-temperature environments. The material is particularly favored in industries requiring durability and resistance to creep, oxidation, and thermal fatigue. This article details the material specifications, chemical composition, mechanical properties, key features, equivalent grades, and applications of P91 pipes.

Material

P91 alloy steel is a modified 9Cr-1Mo steel with added elements like vanadium, niobium, and nitrogen to improve strength and creep resistance. It is primarily used in high-temperature and high-pressure environments such as power plants and petrochemical industries.

Specification

Material Grade: P91 (ASTM A335 P91)
Type: Cold Drawn Seamless Pipe
Manufacturing Process: Hot Worked, followed by Cold Drawing for improved dimensional accuracy and surface finish
Standards: ASTM A335, ASME SA335

Chemical Composition

Element	C (%)	Mn (%)	Si (%)	P (%)	S (%)	Cr (%)	Mo (%)	Ni (%)	V (%)	Nb (%)	N (%)
Content	0.08-0.12	0.3-0.6	0.2-0.5	≤0.02	≤0.01	8.0-9.5	0.85-1.05	≤0.4	0.18-0.25	0.06-0.10	0.03-0.07

Mechanical Properties

Property	Value	Test Condition
Tensile Strength (MPa)	585 - 740	Room temperature
Yield Strength (MPa)	≥ 415	Room temperature
Elongation (%)	≥ 20	Room temperature
Reduction of Area (%)	≥ 30	Room temperature
Hardness (HB)	≤ 200	Room temperature
Creep Rupture Strength	High, suitable for >593°C	Long term high-temperature exposure

Key Features

High-Temperature Strength: Excellent resistance to creep and rupture at temperatures up to 600°C.
Corrosion Resistance: Chromized surface and alloy elements provide good oxidation and corrosion resistance.
Durability: Superior strength and stability under cyclic temperatures enhance pipe life.
Seamless Construction: Eliminates weld joint defects ensuring uniform mechanical properties.
Dimensional Accuracy: Cold drawing process improves surface finish and tightens tolerances.

Equivalent Grades

Standard	Equivalent Grade
ASTM	A335 P91
EN	1.4903 (X10CrMoVNb9-1)
GOST	18H12M (18Х12М)
JIS	SCMV9
GB	12Cr1MoV

Application

Power Generation: Used extensively in thermal and nuclear power plants for boiler tubes, steam pipes, and heat exchangers.
Petrochemical Industry: Suitable for high-temperature piping in refineries and chemical plants.
Oil & Gas: Employed in high-pressure, high-temperature pipelines and equipment.
Automotive and Mechanical: Components subjected to extreme heat cycles, such as turbocharger parts.
Pressure Vessels and Boilers: Due to strength and reliability at elevated temperatures.

Q: Are you trading company or manufacturer ?

A: manufacturer,also can do trading.

Q: How long is your delivery time?

A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples? is it free or extra ?

A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.

If you have another question, pls feel free to contact with me.

Product Tags:


*From:	Your email address is incorrect!
*To:	TORICH INTERNATIONAL LIMITED
*Subject:	Subject is empty!
*Message:	For the best results, we recommend including the following details: -Self introduction -Required specifications -Inquire about price/MOQ Characters Remaining: (0/3000) Please enter 20 to 3000 characters to contact this supplier!

Categories	Seamless Steel Tube
Brand Name:	TORICH
Model Number:	ASTM A335 P91
Certification:	API,CE,ISO,ISO9001-2008,ISO9001
Place of Origin:	Zhejiang/China
MOQ:	1Ton
Price:	800-1000 USD/Ton
Payment Terms:	L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Ability:	60000 Ton/Tons per Year
Delivery Time:	20-30days upon products
Packaging Details:	In bundles or in wooden boxes.
Application:	High-Temperature Service
Outer diameter(round):	17 - 426 mm
Thickness:	2 - 100 mm,
Length:	6M or as requirement,As customer's require,
Technique:	Cold Drawn,Hot Rolled,Cold Rolled,ERW,Hot Rolled/Cold Drawn
Section shape:	Round,Rectangular
Special pipe:	Thick Wall Pipe,API Pipe,Precision steel tube,precision seamless pipe,cold drawn