Grade 3 Titanium is a commercially pure (CP) titanium with moderate to high strength, good ductility, and excellent corrosion resistance. It strikes a balance between formability and mechanical performance, making it suitable for pressure systems, aerospace, and chemical processing where strength matters more than GR1/GR2 allow.
Common Product Forms
Titanium Sheet & Plate
Seamless / Welded Tubes
Bars / Rods
Pipes & Pipe Fittings
Forged Rings, Blocks, and Flanges
Wire, Foil, and Custom CNC Machined Parts
Chemical Composition (per ASTM B265)
|
Element |
Max Content (%) |
|
Titanium (Ti) |
Balance |
|
Oxygen (O) |
≤ 0.35% |
|
Carbon (C) |
≤ 0.08% |
|
Nitrogen (N) |
≤ 0.05% |
|
Hydrogen (H) |
≤ 0.015% |
|
Iron (Fe) |
≤ 0.30% |
|
Others (each) |
≤ 0.10% |
|
Others (total) |
≤ 0.40% |
Mechanical Properties (Typical, Room Temperature)
|
Property |
Value |
|
Tensile Strength |
≥ 450 MPa (65 ksi) |
|
Yield Strength (0.2% OS) |
≥ 380 MPa (55 ksi) |
|
Elongation |
≥ 18% |
|
Elastic Modulus |
~105 GPa |
|
Hardness |
~100–130 HB |
|
Density |
4.51 g/cm³ |
Note: Strength is significantly higher than GR1 and GR2, while formability is slightly reduced.
Thermal Properties
|
Property |
Value |
|
Melting Point |
~1,660 °C (3,020 °F) |
|
Thermal Conductivity |
~16–17 W/m·K |
|
Coefficient of Thermal Expansion |
~8.6 × 10⁻⁶ /°C |
|
Specific Heat Capacity |
~520 J/kg·K |
|
Max Service Temp (in air) |
~400–500 °C |
Applications of Grade 3 Titanium
Grade 3 is ideal where higher strength is required compared to GR2, but corrosion resistance must still be excellent.
1. Marine & Offshore
Condenser tubing
Seawater piping
Pump housings and underwater fasteners
2. Chemical Processing
Reactor vessels
Heat exchanger components
Clad plates and linings
3. Aerospace (Non-Critical Parts)
Brackets, ducting, and interior structural supports
Applications requiring strength and corrosion resistance, but not full aerospace alloys
4. Power Generation / Desalination
Condenser and evaporator tubing
Cooling water systems in nuclear and fossil plants
Key Advantages of GR3
Higher mechanical strength than GR1/GR2
Good weldability and moderate formability
Excellent corrosion resistance in oxidizing and neutral environments
Cost-effective alternative to titanium alloys (e.g., Ti-6Al-4V) in non-critical strength applications
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