The ASTM B861 Gr.2 pipe refers to titanium pipes classified under the ASTM B861 specification, specifically in Grade 2 (Gr.2). These pipes are manufactured from commercially pure (CP) titanium and are designed for seamless and welded applications, particularly in industries that require high strength-to-weight ratios, corrosion resistance, and reliability.

Titanium Gr.2 is one of the most commonly used commercially pure titanium grades. It strikes a balance between strength, ductility, and corrosion resistance, making it highly suitable for structural and industrial applications.

Key Properties:

1. Chemical Composition:

   • Titanium (Ti): Approximately 99%
   • Impurities (max values):
     • Carbon (C): ≤ 0.08%
     • Nitrogen (N): ≤ 0.03%
     • Hydrogen (H): ≤ 0.015%
     • Oxygen (O): ≤ 0.25%
     • Iron (Fe): ≤ 0.3%

2. Mechanical Properties:

   • Tensile strength: ≥ 345 MPa
   • Yield strength (0.2% offset): ≥ 275 MPa
   • Elongation: ≥ 20%
   • Hardness: Approximately 150 HB (Brinell).

3. Physical Properties:

   • Density: 4.51 g/cm³ (lightweight material).
   • Melting Point: 1668°C.
   • Excellent machinability and weldability.

4. Corrosion Resistance:

   • Exceptional resistance to corrosion in chloride environments, brine solutions, sea water, and an extensive range of industrial chemicals.

• Aerospace:

  • Hydraulic systems.
  • Aircraft structures where lightweight durability is critical.

• Chemical Processing:

  • Heat exchangers, condensers, and chemical transport piping.
  • Resistant to corrosive environments like acidic and alkaline solutions.

• Medical:

  • Equipment for bone implants, piping for surgical instruments, and biocompatible devices.

• Marine:

  • Pipes for desalination plants and shipbuilding.
  • Excellent performance in salty or offshore environments.

• Power Generation:

  • Condenser pipes in nuclear, geothermal, and thermal power plants.

• Automotive and Sports:

  • Lightweight yet durable pipes for performance cars, motorbikes, and bicycles.