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ASTM A335 P91 Alloy Steel Seamless Pipe for High-temperature Service with Corrosion Resistance and OD 6-630mm
Product Details
| Model NO. | P91 | Surface Treatment | Black |
|---|---|---|---|
| Section Shape | Round | Outer Diameter | 6-630mm |
| Production Capacity | 50000kgs | Material Grade | X10CrMoVNb9-1 |
| Chromium Content | 9% | Molybdenum Content | 1% |
| Temperature Resistance | 580°C - 600°C | Heat Transfer | Higher |
| Thermal Expansion | Lower | Wall Thickness | STD, 40, XH, 60, 80, 100, 120, 140, 160, XXH |
| Standard | ASTM A335, A213, EN10216-2 | Material Type | Ferritic-martensitic Steel |
| Micro-alloyed Elements | Vanadium, Niobium | ||
| Highlight | High-temperature Service Seamless Steel Pipe,Corrosion Resistant Alloy Steel Pipe,OD 6-630mm ASTM A335 P91 Pipe |
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Product Description
ASME SA 335 Grade P91 Pipes - ASTM A335 P91 Alloy Seamless Steel Pipe
X10CrMoVNb9-1 Alloy Steel Seamless Pipes for High-temperature Service T91/P91 (X10CrMoVNb9-1)
Product Definition
Grade T/P91 is a ferritic-martensitic (9% chromium, 1% molybdenum) steel micro-alloyed with vanadium and niobium, with controlled nitrogen content according to ASTM A335, A213, or EN 10216-2 standard under designation X10CrMoVNb9-1.
Primary Applications
On fossil-fueled power plants, this grade is primarily used for high-temperature applications in superheater and reheater tubes, headers, and steam piping (main steam and hot reheat).
Performance Advantages
- Excellent elevated-temperature strength and creep behavior up to 580°C - 600°C
- 9% chromium content provides superior corrosion and oxidation resistance compared to grade 22
- Reduced weight of boiler and piping components enables higher resistance to thermal fatigue
- Higher heat transfer and lower thermal expansion coefficients compared to austenitic steels
Available Specifications
Materials available in industry standard designations: STD, 40, XH, 60, 80, 100, 120, 140, 160, XXH
Special customer designated nominal and minimum wall thicknesses can be furnished. Non-standard OD & ID are available.
Alternative Manufacturing Options
Best Pipeline offers pipe from turned and bored forgings in accordance with Specifications A/SA369 when client requirements for size, wall thickness, quantity, or delivery cannot be met by material available under Specifications A/SA335.
A/SA369 material is manufactured in grades including FP11, FP22, FP5, FP9, FP91, and FP92 corresponding to the same grades listed for A/SA335.
Material Grades and International Equivalents
Carbon Steel (CS) and Alloy Steel (AS)
| EN/DIN Grade | Steel | Standard |
|---|---|---|
| P235GH | 1.0345 | EN10216-2 |
| P265GH | 1.0425 | EN10216-2 |
| 16Mo3 | 1.5415 | EN10216-2 |
| 15NiCuMoNb5-6-4 | 1.6368 | EN10216-2 |
| 13CrMo4-5 | 1.7335 | EN10216-2 |
| 10CrMo9-10 | 1.7380 | EN10216-2 |
| X11CrMo5 | 1.7362 | EN10216-2 |
| X11CrMo9-1 | 1.7386 | EN10216-2 |
| X10CrMoNVb9-1 | 1.4903 | EN10216-2 |
| X10CrwMoVNb9-2 | 1.4901 | EN10216-2 |
International Standards
| Standard | Country | Full Name |
|---|---|---|
| ASTM | USA | American Society of Mechanical Engineers |
| AISI | USA | American Iron and Steel Institute |
| JIS | Japan | Japanese Industrial Standards |
| DIN | Germany | Deutsches Institut fur Normung e.V. |
| UNS | USA | Unified Numbering System |
Product Gallery
Product images and visual documentation available upon request.
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