ASTM A335 P11 Seamless Alloy-Steel Pipe for High-Temperature Service with 1.25Cr-0.5Mo Alloy and Normalized and Tempered Treatment
Price:
800-1000 USD/Ton
MOQ:
1 Ton
Delivery Time:
35-45days
Brand:
TORICH
Product Description
ASTM A335 P11 Seamless Alloy-Steel Pipe High-Temperature Boiler Tube
ASTM A335 P11 seamless alloy-steel pipe is a 1.25Cr-0.5Mo ferritic alloy pipe designed for high-temperature and pressure-bearing service in boilers, superheaters, reheaters, and process piping. It is supplied as seamless pipe under ASTM A335 / ASME SA335 and is suitable for bending, flanging, forming, and fusion welding when proper welding procedures and heat treatment controls are applied.
Specifications
| Item | Description |
|---|---|
| Material | Seamless ferritic alloy steel pipe |
| Standard | ASTM A335 / ASME SA335 |
| Grade | P11 / UNS K11597 |
| Outside Diameter | 6-420 mm, custom sizes available |
| Wall Thickness | 1-50 mm, schedule or custom wall available |
| Length | 1-12 m, random length or fixed length available |
| Tolerance Range | According to ASTM A335 / ASTM A999 requirements or purchase specification |
| Straightness | Controlled for boiler and pressure piping installation requirements |
| Surface Condition | Black, bare, pickled, oiled, varnished, or anti-rust coated |
| Heat Treatment | Normalized and tempered, annealed, or full annealed according to grade and order condition |
| Pipe Ends | Plain end, beveled end, or threaded end upon request |
| Testing | Chemical analysis, tensile test, hardness test, hydrostatic test or NDE, visual and dimensional inspection |
Main Characteristics
| Characteristic | Technical Value |
|---|---|
| Nominal Alloy System | 1.25Cr-0.5Mo chrome-moly alloy steel |
| Chromium Content of P11 | 1.00-1.50% |
| Molybdenum Content of P11 | 0.44-0.65% |
| Minimum Tensile Strength | 415 MPa / 60 ksi |
| Minimum Yield Strength | 205 MPa / 30 ksi |
| Typical Maximum Hardness Control | Commonly controlled not above 250 HBW / 25 HRC where applicable |
| Service Orientation | High-temperature pressure service, boiler piping, refinery piping, and power plant piping |
| Weldability | Suitable for fusion welding with qualified WPS, controlled preheat, interpass temperature, and PWHT where required |
| Related Fittings | ASTM A234 WP11 butt-weld fittings and ASTM A182 F11 forged flanges/fittings |
Our Advantages
| Professional Concern | Our Control Method |
|---|---|
| Grade mix-up between P11, P22, P5, and P91 | Positive Material Identification can be arranged for Cr-Mo verification, with heat number traceability from raw material to finished pipe. |
| Hardness and heat-treatment consistency | Heat treatment records, hardness inspection, and mechanical test reports are provided to confirm that pipe properties match the ordered ASTM A335 grade. |
| Boiler welding and site installation reliability | Pipes can be supplied with beveled ends, dimensional inspection, hydrostatic test or NDE records, MTC 3.1, and packing suitable for long-distance export handling. |
Executive Standards
| Standard System | Applicable Standard |
|---|---|
| ASTM / ASME | ASTM A335 / ASME SA335 seamless ferritic alloy-steel pipe for high-temperature service |
| ASTM Fittings | ASTM A234 WP11 / WP22 / WP91 butt-weld pipe fittings |
| ASTM Forgings | ASTM A182 F11 / F22 / F91 forged flanges and fittings |
| EN Reference | EN 10216-2 seamless steel tubes for pressure purposes, alloy high-temperature grades |
| JIS Reference | JIS G3458 alloy steel pipes |
| GB Reference | GB/T 5310 seamless steel tubes and pipes for high-pressure boilers |
| GOST Reference | GOST pressure and boiler pipe grades selected by project equivalence |
Application Field
Superheater tube outlet header connection pipe for high-pressure boiler systems.
ASTM A335 P11 is commonly selected where the pipe must retain strength at elevated temperature while maintaining compatibility with Cr-Mo boiler fittings and forged flanges.
Chemical Composition
| Grade | C % | Mn % | P Max % | S Max % | Si % | Cr % | Mo % | Other Key Elements |
|---|---|---|---|---|---|---|---|---|
| P5 | 0.15 max | 0.30-0.60 | 0.025 | 0.025 | 0.50 max | 4.00-6.00 | 0.45-0.65 | -- |
| P9 | 0.15 max | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 | -- |
| P11 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | -- |
| P22 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 max | 1.90-2.60 | 0.87-1.13 | -- |
| P91 | 0.08-0.12 | 0.30-0.60 | 0.020 | 0.010 | 0.20-0.50 | 8.00-9.50 | 0.85-1.05 | V, Nb, N controlled |
Mechanical Properties
| Grade | Tensile Strength Min | Yield Strength Min | Elongation Min | Hardness Requirement |
|---|---|---|---|---|
| P5 | 415 MPa / 60 ksi | 205 MPa / 30 ksi | According to ASTM A335 test specimen requirements | Controlled by grade/order requirement |
| P9 | 415 MPa / 60 ksi | 205 MPa / 30 ksi | According to ASTM A335 test specimen requirements | Controlled by grade/order requirement |
| P11 | 415 MPa / 60 ksi | 205 MPa / 30 ksi | According to ASTM A335 test specimen requirements | Commonly controlled up to 250 HBW / 25 HRC where specified |
| P22 | 415 MPa / 60 ksi | 205 MPa / 30 ksi | According to ASTM A335 test specimen requirements | Controlled by grade/order requirement |
| P91 | 585 MPa / 85 ksi | 415 MPa / 60 ksi | According to ASTM A335 test specimen requirements | 250 HBW / 265 HV / 25 HRC max commonly specified |
Product Images
Frequently Asked Questions
Q: Are you trading company or manufacturer?
A: Manufacturer, also can do trading.
Q: How long is your delivery time?
A: Generally speaking, it is 10-15 days if the goods are in stock, or it is 30-40 days if the goods are not in stock, according to quantity.
Q: Do you provide samples? Is it free or extra?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment?
A: Payment ≤ 2000 USD, 100% in advance. Payment ≥ 2000 USD, 30% T/T in advance, balance before shipment. If you have another question, please feel free to contact with me.
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Company
TORICH INTERNATIONAL LIMITED
Location
Suite 1604-3, Hongan Plaza, #258 Die Yuan Road, Yinzhou District, Ningbo City, China
Contact Person
Richard SHEN