Chrome Moly Alloy A335/SA335 Grade P91 Pipe

Chrome Moly Alloy A335/SA335 Grade P91 Pipe is a high-grade, seamless pipe used in high-pressure and high-temperature environments, primarily in the power generation industry. Here’s an integrated overview, combining both general information and specific data typically found in a detailed datasheet:

General Overview:

1. Specification Standards: ASTM A335 for American Society for Testing and Materials, ASME SA335 for American Society of Mechanical Engineers.
2. Grade: P91, part of the P-Grade alloy steels known for high temperature and pressure resistance.
3. Applications: Utilized in high-temperature services like superheater and reheater lines, steam piping in power plants, and other similar environments. Also used in refineries and chemical plants.
4. Features: Offers high temperature resistance (up to around 600°C), excellent oxidation and corrosion resistance, and good weldability with appropriate preheating and post-weld heat treatments.

Detailed Datasheet Information:

1. Chemical Composition (%):
   • Chromium (Cr): 8.00 – 9.50
   • Molybdenum (Mo): 0.85 – 1.05
   • Carbon (C): 0.08 – 0.12
   • Manganese (Mn): 0.30 – 0.60
   • Silicon (Si): 0.20 – 0.50
   • Phosphorus (P): ≤ 0.020
   • Sulfur (S): ≤ 0.010
   • Nickel (Ni): ≤ 0.40
   • Vanadium (V): 0.18 – 0.25
   • Niobium (Nb): 0.06 – 0.10
   • Nitrogen (N): 0.030 – 0.070
   • Aluminum (Al): ≤ 0.020
   • Copper (Cu): ≤ 0.40
2. Mechanical Properties:
   • Tensile Strength: Min 585 MPa
   • Yield Strength (0.2% Offset): Min 415 MPa
   • Elongation: Typically 20% min
   • Hardness: Max 250 HBW or 25 HRC
3. Sizes and Dimensions:
   • Nominal Pipe Size (NPS): 1/2” to 36” and larger as per requirements
   • Schedule Number: Commonly Schedule 40, 60, 80, 120, 160
   • Wall Thickness and Length: Vary with NPS and schedule number, with standard and custom lengths available
4. Heat Treatment: Pipes undergo normalizing and tempering for enhanced properties.
5. Standards and Testing: Compliant with ASTM A335 and ASME SA335 standards. Pipes undergo various tests like impact, tensile, hardness, and non-destructive examinations.

For a business like SteelMerge, dealing in specialized alloy pipes, offering A335/SA335 Grade P91 pipes can be crucial for clients who require materials that can withstand extreme conditions in high-temperature and high-pressure applications. It’s important to source these pipes with their specific datasheets from reputable manufacturers to ensure compliance with required standards and performance criteria.