ASTM A355 P11 Pipe
Material
ASTM A355 P11 is a seamless ferritic alloy-steel pipe used for high-temperature service. It is commonly known as P11 pipe and is suitable for bending, flanging, and similar forming operations. The pipe is made from a combination of chromium and molybdenum, which enhances its corrosion resistance and high-temperature strength.
Specification
The specification for ASTM A355 P11 pipe is as follows:
- Standard: ASTM A355
- Grade: P11
- Size Range: 1/8" - 24" (DN6 - DN600)
- Wall Thickness: SCH 20 - SCH XXS
Length: Single Random, Double Random, Cut Length
Chemical Composition
The chemical composition of ASTM A355 P11 pipe is as follows:
| Element | Composition (%) |
|---|---|
| Carbon | 0.05-0.15 |
| Manganese | 0.30-0.60 |
| Phosphorus | 0.025 |
| Sulfur | 0.025 |
| Silicon | 0.50-1.00 |
| Chromium | 1.00-1.50 |
| Molybdenum | 0.44-0.65 |
Mechanical Properties
The mechanical properties of ASTM A355 P11 pipe are as follows:
| Property | Value |
|---|---|
| Tensile Strength | 415 MPa min |
| Yield Strength | 205 MPa min |
| Elongation | 30% min |
| Hardness (HB) | 163 max |
Steel Grade
ASTM A355 P11 pipe is categorized under the steel grade of "P11." This grade signifies its composition and mechanical properties, specifically tailored for high-temperature applications.
Application
ASTM A355 P11 pipe is widely used in various industries due to its excellent high-temperature strength and corrosion resistance. Some common applications include:
- Power Plants: P11 pipes are extensively used in power generation plants for superheater and reheater tubes, as well as for steam pipelines.
- Petrochemical Industry: These pipes find application in refineries, petrochemical plants, and oil and gas processing facilities for transportation of high-temperature fluids and gases.
- Heat Exchangers: P11 pipes are employed in heat exchangers and boilers for efficient heat transfer.
- Manufacturing Equipment: P11 pipes are used in the fabrication of equipment such as reactors, furnaces, and heat exchangers in various manufacturing industries.
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