ASTM A335 P5 Alloy Steel Seamless Pipe

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Product Overview

ASTM A335 P5 Pipe is a chromium-molybdenum alloy steel seamless pipe designed for high-temperature and pressure service. Also supplied as ASME SA335 Grade P5, this chrome moly pipe combines good strength, creep resistance and high-temperature performance, making it suitable for demanding industrial piping systems.

ASTM A335 Grade P5 contains approximately 4.00–6.00% chromium and 0.45–0.65% molybdenum. This alloying combination provides improved resistance to oxidation and high-temperature degradation while maintaining the mechanical strength required for pressure service. The grade is commonly selected for applications where conventional carbon steel pipes may not provide the required elevated-temperature performance.

OM Export India supplies ASTM A335 P5 seamless alloy steel pipes in different nominal pipe sizes, wall thicknesses, schedules and lengths according to project requirements. Pipes can be supplied with plain, beveled or threaded ends, subject to size and application requirements.

ASTM A335 P5 seamless pipes are used in power generation, boilers, petrochemical plants, refineries, heat exchangers and other high-temperature process piping applications. The seamless construction provides uniformity and reliable performance in pressure-containing systems.

For project-specific requirements, OM Export India can supply ASTM A335 P5 pipe with applicable inspection, testing and documentation requirements. Contact our team for availability, sizes, dimensions and technical requirements.

Key Features

High-temperature service capability
Chromium-molybdenum alloy steel construction
Seamless pipe design
Good high-temperature strength
Good resistance to oxidation and thermal degradation
Suitable for pressure piping applications
Available in multiple schedules and wall thicknesses
Suitable for demanding industrial applications
Available in project-specific sizes and lengths

Product Specifications

Property	Specification
Material	Chrome Moly Alloy Steel
Grade	ASTM A335 Grade P5
Equivalent Standard	ASME SA335 Grade P5
UNS Designation	K41545
Product Type	Seamless Alloy Steel Pipe
Nominal Size	1/2" NB to 36" NB
Wall Thickness	As per schedule and project requirement
Schedules	SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS and other schedules
Pipe Form	Round
End Type	Plain End, Beveled End, Threaded End
Length	Single Random, Double Random and Cut Length
Manufacturing Process	Seamless
Applicable Standard	ASTM A335 / ASME SA335

Dimensions & Sizes

Nominal Pipe Size	Outside Diameter	Typical Wall Thickness
1/2" NB	21.3 mm	As per Schedule
3/4" NB	26.7 mm	As per Schedule
1" NB	33.4 mm	As per Schedule
1 1/4" NB	42.2 mm	As per Schedule
1 1/2" NB	48.3 mm	As per Schedule
2" NB	60.3 mm	As per Schedule
2 1/2" NB	73.0 mm	As per Schedule
3" NB	88.9 mm	As per Schedule
4" NB	114.3 mm	As per Schedule
5" NB	141.3 mm	As per Schedule
6" NB	168.3 mm	As per Schedule
8" NB	219.1 mm	As per Schedule
10" NB	273.0 mm	As per Schedule
12" NB	323.9 mm	As per Schedule
14" NB	355.6 mm	As per Schedule
16" NB	406.4 mm	As per Schedule
18" NB	457.2 mm	As per Schedule
20" NB	508.0 mm	As per Schedule
24" NB	610.0 mm	As per Schedule
30" NB	762.0 mm	As per Schedule
36" NB	914.0 mm	As per Schedule

Chemical Composition

Element	Composition (%)
Carbon (C)	0.15 max
Manganese (Mn)	0.30–0.60
Silicon (Si)	0.50 max
Phosphorus (P)	0.025 max
Sulfur (S)	0.025 max
Chromium (Cr)	4.00–6.00
Molybdenum (Mo)	0.45–0.65

Mechanical Properties

Mechanical Property	Minimum Requirement
Tensile Strength	415 MPa
Yield Strength	205 MPa
Elongation	30%

Standards & Specifications

ASTM A335 / ASME SA335

Dimensional requirements can be supplied according to applicable ASME/ANSI piping dimensional standards and project specifications.

Applications

Applications of ASTM A335 P5 Pipe

ASTM A335 P5 alloy steel seamless pipes are used in industrial systems that require reliable performance at elevated temperatures and pressures. Typical applications include:

Power generation plants
Boiler and steam piping systems
Petrochemical plants
Oil and gas refineries
High-temperature process piping
Heat exchanger systems
Thermal power plants
Fertilizer and chemical processing plants
Pressure piping systems
Industrial furnace and heating systems

The combination of chromium and molybdenum provides ASTM A335 P5 pipe with enhanced high-temperature performance and resistance to oxidation, making it suitable for demanding process and energy applications.

Frequently Asked Questions

What is ASTM A335 P5 Pipe?

ASTM A335 P5 is a chromium-molybdenum alloy steel seamless pipe designed for high-temperature service and pressure piping applications.

What is the equivalent of ASTM A335 P5?

The corresponding ASME designation is SA335 Grade P5. ASTM A335 P5 is identified by UNS designation K41545.

What is the chemical composition of A335 P5?

ASTM A335 P5 typically contains 4.00–6.00% chromium and 0.45–0.65% molybdenum, with controlled levels of carbon, manganese, silicon, phosphorus and sulfur as specified by the applicable standard.

Where is ASTM A335 P5 Pipe used?

A335 P5 pipe is commonly used in power plants, boilers, refineries, petrochemical plants, heat exchangers and high-temperature pressure piping systems.

Is ASTM A335 P5 available as a seamless pipe?

Yes. ASTM A335 covers seamless ferritic alloy-steel pipe intended for high-temperature service.

What sizes are available for ASTM A335 P5 Pipe?

OM Export India can supply A335 P5 pipe in different nominal sizes, wall thicknesses and schedules according to project requirements and availability.

What end finishes are available?

Depending on size and requirement, ASTM A335 P5 pipes can be supplied with plain, beveled or threaded ends.

ASTM A335 P5 Alloy Steel Seamless Pipe

Product Overview