-
Call Us On
+91 97695 84950
-
Mail Us @
[email protected]
Product Overview
Introduction To Engineering Steel P11
MOKSH TUBES & FITTINGS LLP is a trusted manufacturer, supplier, exporter, importer, and stockist of P11 steel products including pipes, tubes, plates, and forgings.
EN P11, is a chromium-molybdenum alloy steel commonly used in high-temperature and high-pressure applications such as boilers, superheaters, and pressure vessels. It belongs to the Grade 1 group of alloy steels and is designed to provide excellent strength, creep resistance, and oxidation resistance at elevated temperatures up to 550°C (1022°F).
Download Engineering Steels P11 Datasheet
Get the complete Engineering Steels P11 datasheet with chemical composition, mechanical properties, heat treatment details, and applications. Enter your email to receive the PDF instantly.
We respect your privacy. Your email will only be used to send the datasheet.
Specifications of Alloy Steel P11 (ASTM A335 / ASME SA335)
| Category | Details |
|---|---|
| Grade | ASTM A335 P11 / ASME SA335 P11 / UNS K11597 |
| Type | Chromium-Molybdenum (Cr-Mo) Alloy Steel |
| Material Category | High-Temperature Ferritic Alloy Steel |
| Carbon Content | ~0.10% |
| Key Alloying Elements | 1.0–1.5% Cr, 0.44–0.65% Mo |
| Primary Use | High-temperature & high-pressure piping |
| Supply Conditions | Hot Finished, Cold Drawn, Normalized & Tempered |
| Available Forms | Seamless Pipes, Boiler Tubes, Heat Exchanger Tubes, Superheater Tubes |
| Heat Treatment Options | Normalizing, Tempering, Stress Relieving |
| Testing Availability | Tensile, Hydrostatic, NDT, Hardness, Chemical Analysis |
| Certification | EN 10204 3.1 / 3.2 |
| Standards | ASTM A335 / ASME SA335, DIN 1.7386 |
| Machinability | Moderate |
| Weldability | Good (Preheat recommended) |
| Corrosion Resistance | Moderate – enhanced oxidation & creep resistance |
| Temperature Resistance | Excellent – service up to ~600°C |
Chemical Composition of P11 Alloy Steel
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.07 – 0.15 |
| Manganese (Mn) | 0.30 – 0.60 |
| Silicon (Si) | 0.10 – 0.40 |
| Chromium (Cr) | 0.90 – 1.20 |
| Molybdenum (Mo) | 0.44 – 0.65 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
Chromium and molybdenum provide P11 steel with excellent oxidation resistance, creep strength, and stability at elevated temperatures.
Mechanical Properties of Alloy Steel P11 (Normalized & Tempered)
| Property | Annealed | Hot-Finished | Hot-Rolled |
|---|---|---|---|
| Tensile Strength (MPa) | 517–655 | 552–758 | 517–655 |
| Yield Strength (MPa) | 276–414 | 310–620 | 276–414 |
| Elongation (%) | 20–30 | 15–25 | 20–30 |
| Brinell Hardness (HB) | 140–190 | 160–220 | 140–190 |
| Rockwell Hardness | 75–85 B | 85–90 B | 75–85 B |
P11 maintains durability, thermal strength, and excellent resistance to creep during long high-temperature service cycles.
Uses and Advantages
Excellent strength and creep resistance at elevated temperatures
Good oxidation and corrosion resistance in steam and gas environments
Suitable for high pressure and thermal cycling applications
Good weldability and machinability
Applications of Engineering Steel P11
Engineering Steel P11 is primarily used for:
Chemical Processing
Oil & Gas
Marine
Pharmaceutical
Heat Exchangers
Power Plants
WHY CHOOSE US?
FAQ's
What is P11 steel used for?
P11 steel is primarily used in high temperature and high pressure applications, including boiler tubes, superheaters, pressure vessels, and heat exchanger components in power generation, petrochemical, oil & gas, and chemical processing industries.
What are the key properties of P11 steel?
P11 steel provides excellent strength, creep resistance, oxidation resistance, good weldability, and machinability, making it suitable for thermal cycling and high-pressure environments.
In what forms is P11 steel available?
P11 steel is available in seamless and welded pipes, tubes, sheets, plates, bars, flanges, fasteners, and custom fabricated components to meet diverse industrial requirements.
Why is P11 steel suitable for high-temperature applications?
Its chromium molybdenum composition ensures superior creep resistance, oxidation resistance, and strength at elevated temperatures up to 550°C (1022°F), making it ideal for boilers, superheaters, and pressure vessels.
Why choose MOKSH TUBES & FITTINGS LLP for P11 steel?
We provide certified high-quality P11 steel products with comprehensive stock, custom sizing, technical expertise, timely deliveries, competitive pricing, and full traceability for critical alloy steel applications.
Contact Us
Moksh Tubes & Fittings LLP Let our team help you source exactly what you need, when you need it.
Get in Touch