Alloy Steel P5 Seamless Pipes
Alloy Steel Products

ASTM A335 Grade P5 Alloy Steel Seamless Pipes

Home » Alloy Steel P5 Seamless Pipes

Alloy Steel P5 Seamless Pipe Table of Content

Get In Touch

Alloy Steel P5 Seamless Pipes Supplier & Manufacturer

Lakshay Steel is a trusted supplier and manufacturer of Alloy Steel P5 Seamless Pipes, which is also known as A335 P5 seamless pipes providing you with the finest quality alloy steel piping solutions for demanding applications in power plants, refineries, petrochemical facilities, and industrial boilers. With over 25 years’ experience, Lakshay Steel manufactures seamless pipes that meet the requirements of high temperature and high pressure applications effectively.

Our Alloy Steel P5 Seamless Pipes are manufactured in accordance with the ASTM A335 P5 spec to ensure highest mechanical strength, high corrosion resistance, and an overall reliable long-term performance. Lakshay Steel is the dependable producer for technically accurate, and competitive priced A335 P5 alloy steel seamless pipes to use for any projects if you are an EPC contractor, engineer, or procurement agent.

We offer a multitude of sizes and thicknesses of pipe with limitless custom manufacturing options such as cut-to-length, beveled ends, and special coating. Equipped with international certifications, third-party inspection approvals taken upon request, our products are exported to over 40 countries, and are used extensively in heat exchangers, pressure vessels, and ultra-light weight boilers.

When you choose Lakshay Steel as your Alloy Steel P5 Seamless Pipes manufacturer, you are assured timely delivery, technical support, and consistent quality that you can trust.

Product Specifications – Alloy Steel P5 Seamless Pipes

At Lakshya Steel, we manufacture Alloy Steel P5 Seamless Pipes to deliver the best possible quality and performance. Our Alloy Steel P5 Seamless Pipes are manufactured as per ASTM A335 / ASME SA335 Grade P5 and are suitable for high-temperature service, in critical pressure applications.

Key Product Specifications

Specification Details
Product Alloy Steel P5 Seamless Pipes
Manufacturing Standard ASTM A335 / ASME SA335
Grade P5
Type Seamless
Outer Diameter 1/8” NB to 24” NB (Custom sizes available)
Wall Thickness SCH 10 to SCH 160 / XXS
Length Single Random, Double Random, or Custom Length
Ends Plain End (PE), Beveled End (BE), Threaded End (TE)
Form Round, U-Bent, Hydraulic, Straight
Manufacturing Process Hot Finished / Cold Drawn
Heat Treatment Normalized, Tempered, Annealed
NDT Testing Eddy Current, Ultrasonic, Hydrostatic
Surface Finish Black Painted, Bare, Anti-Rust Coated, Varnished
To achieve international standards for dimensional tolerances, wall thickness accuracy, and mechanical strength, every Alloy Steel Seamless Pipe is tested and inspected. Every batch is traceable and supplied with certified test reports, so customers know exactly what they’re getting.

Material Details – Alloy Steel P5 Seamless Pipes

The Alloy Steel P5 Seamless Pipes (ASTM A335/ASME SA335) used in high-temperature applications in power generation, refineries, and petrochemical services are made of chromium and molybdenum which improve strength, oxidation resistance, thermal stability, and corrosion resistance. These pipes serve in high-pressure and high-temperature applications.

Chemical Composition (% by weight)

Element Minimum (%) Maximum (%)
Carbon (C) 0.15 0.25
Manganese (Mn) 0.30 0.60
Phosphorus (P) — 0.025
Sulfur (S) — 0.025
Chromium (Cr) 4.00 6.00
Molybdenum (Mo) 0.45 0.65
Silicon (Si) 0.50 1.00
The higher chromium and molybdenum content gives Alloy Steel P5 excellent resistance to oxidation and scaling at elevated temperatures, while maintaining superior mechanical properties under high-stress conditions.

Mechanical Properties (Typical)

Property Value
Tensile Strength ≥ 415 MPa (60,000 psi)
Yield Strength (0.2% offset) ≥ 205 MPa (30,000 psi)
Elongation ≥ 30%
Hardness (Brinell) ≤ 163 HB
These mechanical characteristics ensure Alloy Steel P5 pipes maintain structural integrity even in the most extreme operating environments.

Equivalent Standard For Alloy steel P5 Seamless Pipes :

GRADE UNS EN BS DIN GOST AFNOR WNR
P5/P5 K41545 X12CrMo5 – – 15KH5M – 1.4903

Alloy Steel P5 Chrome Moly Pipe Equivalent:

ASTM ASME JIS G 3458 UNS BS DIN ISO ABS NK LRS
A335 P5 SA335 P5 STPA 25 K41545 3604 P1 625 2604 III TS37 ABS 14

 

ASTM International BSi – British Standards institute Material
A335 Gr. P5 3604/625 5% Cr 1/2% Mo
A335 Gr. P9 3604/629 9% Cr 1% Mo
A335 Gr. P11 3604/621 1 1/4% Cr 1/2% Mo
A335 Gr. P12 3604/620 1% Cr 1/2% Mo
A335 Gr. P22 3604/622 2 1/4% Cr 1% No

 

MATERIAL SPECIFICATION
ASTM ASME
CHROME- MOLY ALLOY STEEL PIPE NOMINAL WALL SEAMLESS A335 Grade P5 5% Chrome; ½% Moly SA335 Grade P5 5% Chrome; ½% Moly
CHROME- MOLY ALLOY STEEL PIPE NOMINAL WALL SEAMLESS A335 Grade P9 9% Chrome; 1% Moly SA335 Grade P9 9% Chrome; 1% Moly
CHROME- MOLY ALLOY STEEL PIPE NOMINAL WALL SEAMLESS A335 Grade P11 1-1/4% Chrome; ½% Moly SA335 Grade P11 1-1/4% Chrome; ½% Moly
CHROME- MOLY ALLOY STEEL PIPE NOMINAL WALL SEAMLESS A335 Grade P22 2-1/4% Chrome; 1% Moly SA335 Grade P22 2-1/4% Chrome; 1% Moly
CHROME- MOLY ALLOY STEEL PIPE NOMINAL WALL SEAMLESS A335 Grade P91 9% Chrome; 1% Moly + trace elements SA335 P91 A335 9% Chrome; 1% Moly + trace elements

Alloy Steel P5 Seamless Pipes Outside Diameter:

Hot rolled Outside Diameter, mm Tolerance, mm
OD≤101.6 +0.4/-0.8
101.6＜OD≤190.5 +0.4/-1.2
190.5＜OD≤228.6 +0.4/-1.6
Cold Drawn Outside Diameter, mm Tolerance, mm
OD＜25.4 ±0.10
25.4≤OD≤38.1 ±0.15
38.1＜OD＜50.8 ±0.20
50.8≤OD＜63.5 ±0.25
63.5≤OD＜76.2 ±0.30
76.2≤OD≤101.6 ±0.38
101.6＜OD≤190.5 +0.38/-0.64
190.5＜OD≤228.6 +0.38/-1.14

Wall thickness of Grade P5 Seamless Pipes :

Hot rolled Outside Diameter, mm Tolerance, %
OD≤101.6, WT≤2.4 +40/-0
OD≤101.6, 2.4＜WT≤3.8 +35/-0
OD≤101.6, 3.8＜WT≤4.6 +33/-0
OD≤101.6, WT>4.6 +28/-0
OD>101.6, 2.4＜WT≤3.8 +35/-0
OD>101.6, 3.8＜WT≤4.6 +33/-0
OD>101.6, WT>4.6 +28/-0
Cold Drawn Outside Diameter, mm Tolerance, %
OD≤38.1 +20/-0
OD>38.1 +22/-0

Alloy Steel Gr.P5 Pipe Heat Treatment Requirements:

Grade Heat Treatment Type Normalizing Temperature Range F [C] Subcritical Annealing or Tempering

Temperature Range F [C]
P5 (b,c) Full or Isothermal Anneal
Normalize and Temper ***** 1250 [675]
Subcritical Anneal (P5c only) ***** 1325 – 1375 [715 – 745]
P9 Full or Isothermal Anneal
Normalize and Temper ***** 1250 [675]
P11 Full or Isothermal Anneal
Normalize and Temper ***** 1200 [650]
P22 Full or Isothermal Anneal
Normalize and Temper ***** 1250 [675]
P91 Normalize and Temper 1900-1975 [1040 – 1080] 1350-1470 [730 – 800]
Quench and Temper 1900-1975 [1040 – 1080] 1350-1470 [730 – 800]

ASME SA335 P5 Pipe Tensile Requirements:

Seamless
P-5 P-9 P-11 P-22 P-91
Tensile Strength, min., psi
ksi 60 60 60 60 85
MPa 415 415 415 415 585
Yield Strength, min., psi
ksi 30 30 30 30 60
MPa 205 205 205 205 415

 

ASTM A335 P5 Pipe Types Out diameter Wall thickness Length
ASTM A335 P5 Seamless Pipe (Custom Sizes) 1/2″ NB – 60″ NB SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 Custom
ASTM A335 P5 Welded Pipe (in Stock + Custom Sizes) 1/2″ NB – 24″ NB As per requirement Custom
ASTM A335 P5 ERW Pipe (Custom Sizes) 1/2″ NB – 24″ NB As per requirement Custom
ASTM A335 High Pressure P5 Boiler Pipe 16″ NB – 100″ NB As per requirement Custom

Types of Alloy steel P5 Seamless Pipes :

Alloy Steel P5 seamless Pipes P5 Alloy Steel A335 Pipe
ASTM A335 grade P5 seamless Pipes ASTM A335 P5 Alloy Steel Seamless Pipe
High Pressure P5 Boiler Pipe ASME SA335 P5 Alloy Steel Rectangular Pipe
Alloy Steel P5 Seamless Pipes Alloy Steel Gr P5 Heater Pipe
ASME SA 213 Alloy Steel P5 Seamless Pipe IBR Alloy Steel P5 seamless Pipes
Alloy Steel P5 Custom Pipes ASME SA / ASTM A335 P5 seamless Pipes
Alloy Steel Grade P5 Round Pipe ASME SA335 P5 seamless Pipes Suppliers
Alloy A335 P5 Seamless Square Pipe ASME SA335 P5 Alloy Steel Seamless Pipe
AISI P5 ERW Pipe ASTM A335 P5 seamless Pipes
ASTM A335 P5 Boiler Pipe Tubo A335 P5 Seamless Pipe
ASME SA335 P5 Seamless Alloy Pipe ASME SA335 P5 seamless Pipes
ASME SA335 P5 Material ASME SA335 Grade P5 Seamless Pipe
ASME SA335 Grade P5 Seamless Pipe ASME SA335 Gr P5 Seamless Pipe
ASME SA335 P5 Thermal Conductivity Astm A335 Grade P5 Seamless Pipe
ASME SA335 Gr P5 Seamless Pipe ASME SA335 P5 Material
Astm A335 Gr P5 Seamless Pipe ASME SA335 P5 Seamless Pipe
Astm A335 P5 Seamless Pipe ASME SA335 P5 Piping
ASME SA335 P5 Seamless Pipe ASTM A335 P5 Steel
Astm A335 P5 Seamless Pipe ASTM A335 P5 Seamless Pipe Material
ASTM A335 P5 Piping ASTM A335 P5 seamless Pipes

Certifications & Quality Assurance

At Lakshya Steel, we believe in the utmost importance of providing Alloy Steel P5 Seamless Pipes that are world-class and resonate with standards safe for the customer. Lakshay Steel thoroughly tracks every piece of pipe with testing, documentation, and inspection processes to ensure their compliance, reliability, and performance for necessity use.
  • Mill Test Certificates:
    Provided with each product (EN 10204 3.1 / 3.2) ensuring traceability, chemical and mechanical compliance.
  • International Certifications:
    ISO 9001 (Quality), ISO 14001 (Environment), ISO 45001 (Health & Safety), PED (EU Compliance), IBR (Boiler Applications).
  • Third-Party Inspection:
    Available on request from reputed agencies like BV, TÜV, SGS, DNV, and Lloyd’s Register.
  • In-House Testing:
    Includes Hydro, UT, Eddy Current, RT, Hardness, Flattening, and Flaring tests to ensure top-tier product integrity.
Our multi-stage quality assurance process ensures that only defect-free, high-integrity pipes leave our facility — fully ready to perform in the most demanding industrial conditions.

Applications & Industries Served

Alloy Steel P5 Seamless Pipes are some of the strongest, highly heat-resistant, and highly corrosion-resistant pipes available. Alloy Steel P5 pipes are used in all types of critical applications across multiple industries. At Lakshya Steel, we supply Alloy Steel P5 pipes made for heavy-duty applications, which is one reason they are a popular option for engineers, EPC contractors, and industrial buyers.

Common Applications

  • Heat Exchangers: Designed to withstand thermal cycling, pressure variations, and corrosive fluids in oil refineries and chemical plants.
  • Boiler Components: Ideal for superheater tubes, reheater tubes, and steam lines operating under elevated temperatures and pressure.
  • Petrochemical Pipelines: Suitable for transporting high-temperature fluids, gases, and hydrocarbons in aggressive environments.
  • Power Generation: Utilized in fossil fuel-based power plants for steam piping, feedwater lines, and auxiliary systems.
  • Pressure Vessels & Reactors: Used in high-stress, high-temperature environments where material integrity is paramount.
  • Structural Applications: Employed in offshore platforms and industrial infrastructure requiring superior mechanical strength and weldability.
With decades of experience and a solid understanding of metallurgical standards, Lakshay Steel makes sure that any Alloy Steel P5 Seamless Pipe it supplies is application-ready, compliant, and has proven performance levels by working in the harshest of industrial environments.

Product Availability & Delivery

At Lakshya Steel we recognize the importance of timely delivery of high-performance materials like Alloy Steel P5 Seamless Pipes for your timelines and efficiency to remain intact. That is why we keep a substantial inventory along with an extensive logistics network to provide you with a fast, reliable, and hassle-free delivery anywhere in the country or worldwide.
  • Available Sizes: ½” NB to 24” NB
  • Schedules: SCH 40, 80, 160, XXS & custom
  • Lengths: SRL, DRL & cut-to-length
  • Ends: PE, BE, TE
  • Forms: Round, U-bent, fabricated spools (on request)

Customization & Packaging

  • Custom cuts, coatings (FBE, anti-corrosive), markings, bending
  • Export-ready packaging: wooden boxes, HDPE wrap, end caps

Order Flexibility

  • MOQ: 1 piece (stock sizes)
  • Bulk Orders: Discounted rates & priority service
Choose Lakshay Steel as your Alloy Steel P5 Seamless Pipes supplier for a service that guarantees quality products on time. Our quick supply chain and our dedication to customers make us a preferred supplier of critical piping solutions around the world.

Alloy Steel P5 Seamless Pipes Price Per KG in India

The cost of Alloy Steel P5 Seamless Pipes per KG in India is driven by several core components including pipe size, thickness, manufacturing process, surface finish and order volume. At Lakshya Steel, we offer very competitive pricing while following the ASTM A335 specifications, providing you with both quality and value.

 

Indicative Price Range – Updated for May 2025

Product Type Grade Size Range Price per KG (INR)
Alloy Steel Seamless Pipe ASTM A335 P5 1/2″ to 6″ NB ₹140 – ₹180
Alloy Steel Seamless Pipe ASTM A335 P5 6″ to 12″ NB ₹170 – ₹210
Alloy Steel Seamless Pipe ASTM A335 P5 12″ NB & above ₹200 – ₹250

Why Choose Lakshya Steel

At Lakshya Steel, we are more than just a supplier — we are your trusted partner in performance-grade alloy steel solutions. With a legacy of excellence and a relentless focus on quality, we have earned the confidence of clients across industries like oil & gas, power generation, petrochemicals, and engineering.

Here’s why engineers, procurement specialists, and global EPC contractors choose Lakshya Steel for Alloy Steel P5 Seamless Pipes and other critical piping components:

  • 25+ Years of Expertise
     Deep metallurgical knowledge and application insight — we deliver more than just pipes.
  • Certified Quality
     ASTM A335 compliant, MTC (EN 10204 3.1/3.2), ISO-certified, and third-party inspected (BV, TUV, SGS, DNV).
  • Global Reach
     Reliable supply across India, Middle East, Europe, Africa & Asia with fast, on-time delivery.
  • Customization & Support
     Cut-to-length, coatings, markings, hydro testing, and full technical assistance as needed.
  • Competitive Pricing
     Best value with no compromise on quality. Discounts for bulk orders and long-term deals.
  • Client-First Service
     Responsive, transparent support from quote to delivery for a hassle-free experience.

FAQ’s Alloy Steel P5 Seamless Pipes

What is P5 material grade?
P5 is a grade under ASTM A335 specification for seamless ferritic alloy steel pipe used in high-temperature services. It contains chromium (4-6%) and molybdenum (0.45-0.65%) for enhanced strength, oxidation resistance, and creep resistance in boilers, heaters, and pressure vessels.
What is P5 welding material?
Welding of P5 alloy steel typically uses filler metals like ERCrMo-5 (TIG) or E9015-B9 (SMAW), chosen for compatibility with Cr-Mo alloys. Preheating, controlled interpass temperature, and post-weld heat treatment (PWHT) are required to avoid cracking and ensure weld integrity.
What is the hardness of P5 material?
The typical hardness of P5 material in the normalized and tempered condition ranges between 179–235 HB (Brinell Hardness), depending on specific heat treatment. This hardness ensures good mechanical strength and resistance to high-temperature stress and oxidation.
What is the difference between P5 and P11?
The key difference lies in chemical composition: P5 has higher chromium (4–6%), while P11 contains 1–1.5% Cr and 0.5% Mo. P5 offers better corrosion and creep resistance at elevated temperatures, whereas P11 is more cost-effective and suitable for moderate conditions.
Is P11 a low alloy steel?
Yes, P11 is classified as a low alloy steel under ASTM A335. It contains small amounts of chromium (1–1.5%) and molybdenum (0.4–0.6%) to improve strength, heat resistance, and corrosion resistance, making it ideal for high-temperature and pressure piping systems.
Request A Quote

    Talk To Us – We’re Here To Help

    [hidden post-url default:shortcode[_post_url]]

    Fill the Captcha

    Our Products

    Our Latest Blogs
    What is ERW Pipe and How Are ERW Pipes Made?

    What is ERW Pipe and How Are ERW Pipes Made?

    by | May 16, 2025 |

    When you think about materials that build our world, steel pipes are right up there. They're essential for so many things, from carrying water to supporting buildings. Among the different kinds of steel pipes, ERW pipe – which stands for Electric Resistance Welded...

    What is an Alloy? A Complete Guide to Alloy Metal

    What is an Alloy? A Complete Guide to Alloy Metal

    by | May 9, 2025 |

    Ever think about alloys all around you. Strong car wheels for example. Or kitchen tools that don't rust. Yes, alloys are everywhere. But many people do not really know what is an alloy. In this blog, we will discuss everything about alloys. We will talk about what...

    Related Products

    Send Us Message

    Got a  question? We'd love to hear from you. Send us a message & we'll respond as soon as possible.

      [hidden post-url default:shortcode[_post_url]]

      Fill the Captcha