ASME SA335 ASTM A 335 P11 Seamless Pipes Alloy Steel Pipe
We are a professional ASME SA335 ASTM A 335 P11 Seamless Pipes Alloy Steel Pipe supplier and exporter in China.
ASTM A335 This specification covers seamless ferritic alloy-steel pipe for high-temperature service.
This specification covers nominal wall and minimum wall seamless ferritic alloy-steel pipe intended for high-temperature service.
P11 is a grade of hromium-molybdenum alloy steel, also known as 1.25Cr0.5Mo or 1-1/4Cr1/2Mo Grade
ASTM A335 Gr. P11 pipes are made from chromium-molybdenum alloy steel, which typically includes elements such as chromium, molybdenum, carbon, manganese, silicon, phosphorus, sulfur, and small amounts of other alloying elements. T
ASTM A335 Gr. P11 is commonly used in the power generation, petroleum, chemical, and petrochemical industries,
ASTM A335 Gr. P11 seamless pipes, with nominal chemical composition of “1.25Cr-0.5Mo” or “1.25Cr-0.5Mo-Si”, can be used for ASME B31.3 process piping. The ASME B31.3 Code has designated ASTM A335 Gr. P11 as a listed material and provided the basic allowable stresses in tension at various temperatures.
ASTM A335 P11 seamless pipe Specification.
Size：1/4” Nominal to 24”O.D.
Wall Thickness – Schedule 40 through XXH
Length: Single Random Length, Double Random Length, 20 ft, 40 ft Ends
Types: Plain, Beveled
A335 P11 pipes are used in power generation and in downstream oil ,as well as refinery application
The most commonly used P grades in the power generation industry and petro-chemical plants are P11, P22 & P91.
1.ASME SA335 Pipes Chemical Composition Requirement
| P11 Pipe Chemical Components (%) | ||||||||||||
| Grade | C | Mn | P | S | Si | Cr | Mo | V | Nb | N | Al | others |
| P11 | 0.05-0.15 | 0.30-0.60 | ≤0.025 | ≤0.025 | 0.50-1.00 | 1.0-1.50 | 0.44-0.65 | / | / | / | / | |
*C – Carbon, Mn – Manganese, P – Phosphorous, S – Sulfur, Si – Silicon, Cr-Chromium, Mo – Molybdenum.
ASME SA335 P11 PipesHeat Treatment Requirements
| Grade | UNS Number | Heat Treat Type | Austenitizing/ Solutioning Temperature, min or range °F [°C] | Subcritical Annealing or Tempering Temperature, Min or range °F [°C] |
| P11 | K11597 | full or isothermal anneal normalize and temper | … | 1200[650] |
ASME SA335 P11 Pipes Tensile Requirements and Hardness:
| Mechanical properties | ||||
| Grade | Tensile | Yield | Elongation | Hardness |
| Strength (Mpa) | Strength (Mpa) | (%) | ||
| P11 | ≥415 | ≥220 | ≥30 | ≤89HRB |
A335 P11 pipes Inspection and Test:
- Flattening Test—One flattening test shall be made on specimens from each end of one finished tube, not the one used for the flaring test, from each lot.
- Flaring Test—One flaring test shall be made on specimens from each end of one finished tube, not the one used for the flattening test, from each lot.
- Hydrostatic or Nondestructive Electric Test—Each tube shall be subjected to the nondestructive electric test or the hydrostatic test. The type of test to be used shall be at the option of the manufacturer, unless otherwise specified in the purchase order.
Other Pipe grae of SA335 / A335 is also available
P22, P5, P9, P91, 12Cr1MoVG, 15CrMOG, 12Cr1MoV, 15CroMo.
| Standard | Grade | Chemical Composition % ,max | Mechanical Requirements | |||||||||||
| C | Si | Mn | P | S | Cr | Ni | Mo | Other | T.S.min Mpa | Y.S.min Mpa | EL. min% | HB max | ||
| ASTM A335 / ASME SA335 | P11 | 0.05-0.15 | 0.50-1.00 | 0.30-0.60 | 0.025 | 0.025 | 1.00-5.00 | … | 0.44-0.65 | … | 415 | 205 | 22 | … |
| P9 | 0.15 | 0.25-1.00 | 0.3-0.60 | 0.025 | 0.025 | 8.00-10.00 | … | 0.9-1.10 | … | 415 | 205 | 22 | … | |
| P5 | 0.15 | 0.5 | 0.3-0.6 | 0.025 | 0.025 | 4.0-6.0 | … | 0.45-0.65 | … | 415 | 205 | 22 | … | |
| P91 | 0.08-0.12 | 0.2-0.5 | 0.3-0.6 | 0.02 | 0.01 | 8.0-9.5 | 0.4 | 0.85-1.05 | … | 585 | 415 | 20 | 250 | |
| P22 | 0.05-0.15 | 0.5 | 0.3-0.6 | 0.025 | 0.025 | 1.9-2.6 | 0.87-1.13 | … | 415 | 205 | 22 | … | ||
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How to order our ASTM A335 P11 Seamless Pipe/ASTM A335 P11 Pipes for oil refinery ?
Example#1
Type: ASTM A335 P11 Seamless Pipe.
Length: 6M.
Wall Thickness: SCH 80
Size: 12″
Ends: BE.
Material: ASTM A335 P11
MTC EN 10204 3.1 ,inspection and PMI pictures can be provided before shipment.
