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Home > Alloy Steel> ASTM A335 Gr P91 Seamless Pipe
ASTM A335 Grade P91 pipes feature a precisely controlled alloy composition with 8.0-9.5% chromium, 0.85-1.05% molybdenum, 0.03-0.09% vanadium, and 0.04-0.10% niobium, with carbon content of 0.08-0.12% and manganese of 0.30-0.60%. These pipes deliver minimum tensile strength of 620 MPa (90 ksi) and minimum yield strength of 450 MPa (65 ksi) at room temperature, with elongation of 20% minimum. At elevated temperatures (593°C), P91 pipes exhibit exceptional creep rupture strength of 100 MPa for 100,000-hour service, providing superior long-term reliability in sustained high-temperature applications with minimal dimensional change.
| 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.
Choosing ASTM A335 Gr P91 Seamless Pipe from Rashdan Pipes and Tubes ensures superior corrosion resistance, excellent thermal conductivity, high strength, and long-lasting performance. Our commitment to quality and precision makes our pipes and tubing ideal for demanding industrial applications.
Rashdan Pipes and Tubes is the largest supplier of ASTM A335 Gr P91 Seamless Pipe in Amman, Jordan. 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@rashdanpipes.com.
ASTM A335 Grade P91 pipes are engineered for superheater tubes, reheater tubes, and high-temperature steam piping in fossil-fuel power generation plants operating at temperatures up to 650°C. They serve in petrochemical refineries, advanced heat exchanger systems, and thermal processing applications requiring exceptional creep resistance and oxidation tolerance. These pipes excel in modern power plant designs requiring improved efficiency through higher operating temperatures, providing superior long-term dimensional stability, exceptional durability, and code-compliant solutions for critical high-temperature industrial infrastructure demanding maximum reliability and extended service life.
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