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Home > Alloy Steel> ASTM A335 Gr P91 Seamless Pipe
The **ASTM A335 Gr P91 Seamless Pipe** is crafted from a ferritic alloy steel that includes 9% chromium and 1% molybdenum, which boosts its strength and oxidation resistance at high temperatures. This pipe boasts impressive creep strength, high-temperature tensile strength (typically ranging from 585 to 760 MPa), and solid toughness. Thanks to its seamless design, it features a consistent wall thickness, free from weld defects, ensuring outstanding performance under pressure. Typically, P91 is normalized and tempered to achieve the best mechanical properties, making it an excellent choice for piping systems that face prolonged thermal cycling and mechanical stress.
| ASTM A335 Alloy Steel P91 Pipe Size | : | 1/8NB TO 24NB IN |
| Alloy Steel ASTM A335 P91 Standards | : | ASTM A 335, ASME SA 335, UNS K11522 |
| ASTM A335 P91 Alloy Steel Pipe Type | : | Seamless |
| ASTM A335 Alloy Steel P91 Specialized in | : | Large Diameter Size |
| ASTM A335 Alloy Steel P91 Pipe Outer Dimensions | : | 19.05 – 114.3mm |
| Alloy Steel ASTM A335 P91 Pipe Wall Thickness | : | 2.0 – 14 mm |
| Alloy Steel ASTM A335 P91 Pipe Suppliers Length | : | max 16000mm |
| ASME SA335 P91 Alloy Steel Pipe Schedule | : | Schedule 20 – Schedule XXS (heavier on request) up to 250 thk. |
| ASTM A335 Alloy Steel Pipe Form | : | Round, Square, Rectangular, Hydraulic Etc. |
| Alloy Steel ASTM A335 P91 Pipe Length | : | Single Random, Double Random & Cut Length. |
| ASTM A335 P91 Pipe End | : | Plain End, Beveled End, Treaded |
| Grade | C % | Mn % | P % | S % | Si % | Cr % | Mo % |
|---|---|---|---|---|---|---|---|
| P91 | 0.08-0.12 | 0.30-0.60 | 0.020 max | 0.010 max | 0.20 -0.50 | 8.00 – 9.50 | 0.85 – 1.05 |
| Grade | Tensile Strength, MPa | Yield Strength, MPa | Elongation, % |
|---|---|---|---|
| P91 | 585 min | 415 min | 20 min |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
You’ll find **ASTM A335 Gr P91 Seamless Pipes** commonly used in high-temperature applications like superheaters, reheaters, heat exchangers, and high-pressure steam lines in both thermal and nuclear power plants. In the refinery and petrochemical sectors, these pipes are essential for processing high-temperature fluids and gases. They’re also ideal for boiler tubes, turbine components, and headers where strength at elevated temperatures is crucial. At Maria Pipes and Tubes, we offer ASTM A335 Gr P91 seamless pipes in a variety of sizes and lengths, all while adhering to international standards to guarantee safety, reliability, and performance in mission-critical applications.
Maria Pipes and Tubes is the largest supplier of ASTM A335 Gr P91 Seamless Pipe in Kuala lumpur, Malaysia. We offer premium-quality, corrosion-resistant pipes and tubing ideal for marine, chemical, and industrial applications, with our reliable delivery and customized solutions to meet diverse client needs.
Yes, custom sizes are available for ASTM A335 Gr P91 Seamless Pipe to meet specific requirements. These pipes can be tailored for various industrial applications. For more details, contact us at sales@mariapipes.com.
ASTM A335 Grade P91 seamless pipes are widely used at high temperatures, especially in the electrical and petrochemical industries. Their exceptional strength and oxidation resistance make them ideal for production in boiler systems, superheaters and heat exchangers Furthermore, these pipes are used in fossil fuel power plants and industrial processes requiring processing reliable in extreme conditions. The material’s ability to withstand thermal cycles and high pressures makes it suitable for increasing critical properties, ensuring durability and safety
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