What is ASTM A182 F317 Stainless Steel Blind Flange

ASTM A182 F317 is a high-performance stainless steel alloy primarily used in flange production due to its excellent resistance to corrosion and high-temperature environments. The blind flange is a flange without a bore, designed to close off the ends of piping systems, valves, or pressure vessel openings.

Key Features of ASTM A182 F317 Stainless Steel

1. Material Composition:

   • ASTM A182 F317 is an austenitic stainless steel with a high chromium (Cr) and nickel (Ni) content, along with molybdenum (Mo). These elements enhance its corrosion resistance, especially against chlorides and reducing agents.
   • It contains approximately 18-20% chromium, 11-15% nickel, and 3-4% molybdenum.

2. Corrosion Resistance:

   • Exceptional resistance to pitting and crevice corrosion, especially in environments with high chloride concentrations.
   • Superior to 304 and 316 stainless steels in terms of resistance to chemical attacks.

3. High-Temperature Performance:

   • Excellent performance in high-temperature applications.
   • Resistant to scaling and oxidation at elevated temperatures.

4. Mechanical Properties:

   • High tensile strength and yield strength.
   • Durable and resistant to cracking under stress and pressure.

5. Weldability and Formability:

   • Good weldability and formability due to its austenitic structure, making it suitable for manufacturing various flange types.

Specification:

Chemical Composition:

Mechanical Properties:

Application:

• Oil and Gas Industry: Used in pipelines to block flow or isolate sections.
• Chemical Processing Plants: Ideal for handling corrosive chemicals and high-pressure systems.
• Marine and Offshore Environments: Highly resistant to saltwater corrosion.
• Power Generation: Used in high-temperature and high-pressure steam systems.
• Pharmaceutical and Food Processing: Ensures hygiene and resists contamination due to its non-reactive surface.