ASTM A335 P11 Alloy Steel Pipe is a standard specification for alloy steel pipes, where “P11” indicates the specific grade of the pipe. This type of pipe is suitable for high-temperature and high-pressure environments, commonly used in industries such as petroleum, chemical, power generation, and nuclear industries for transporting high-temperature and high-pressure fluids.
Main Alloying Elements:
- Chromium (Cr): 1.00-1.50%
- Molybdenum (Mo): 0.44-0.65%
These alloying elements provide the pipe with excellent high-temperature, corrosion-resistant, and pressure-resistant properties. Pipes of grade P11 typically exhibit high tensile and yield strength, demonstrating good stability and reliability in high-temperature environments.
Chemical Composition:
- Carbon (C): 0.05-0.15%
- Manganese (Mn): 0.30-0.60%
- Silicon (Si): 0.50-1.00%
- Phosphorus (P): Not exceeding 0.025%
- Sulfur (S): Not exceeding 0.025%
Mechanical Properties:
- Yield Strength: ≥ 205 MPa
- Tensile Strength: ≥ 415 MPa
- Elongation: ≥ 30%
Dimensions and Wall Thickness:
- Outside Diameter Range: 1/2″ – 36″ (21.3 mm – 914 mm)
- Wall Thickness Range: SCH 20 – SCH XXS (2.11 mm – 250 mm)
ASTM A335 P11 Alloy Steel Pipe offers excellent high-temperature, corrosion-resistant, and pressure-resistant properties, making it suitable for transporting fluids in high-temperature and high-pressure environments.