TA2—also known as Grade 2 titanium—is a type of commercially pure (CP) titanium, more robust than TA1 (Grade 1) but still valued for its excellent corrosion resistance and formability
Chemical Composition & Standards
- ASTM/Chinese Standards: Equivalent to Grade 2 per ASTM (e.g., ASTM B265 for plate, B348 for bars) and GB standard TA2
- Typical Composition Limits (by weight):
- Titanium (Ti): balance
- Carbon (C): ≤ 0.08–0.10%
- Iron (Fe): ≤ 0.30%
- Oxygen (O): ≤ 0.25%
- Hydrogen (H): ≤ 0.015%
- Nitrogen (N): ≤ 0.03%
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ~345 MPa and above (up to 480 MPa) |
| Yield Strength | ≥ 275 MPa (up to 410 MPa) |
| Elongation (ductility) | ≥ 20% |
| Hardness | ≤ 150 HV or Rockwell B 80–100 |
| Comparison to TA1 | ~30% stronger, slightly less ductile |
Key Characteristics
- Strength & Formability: TA2 offers a great combination of mechanical strength and good ductility, making it versatile for fabrication processes like forming, welding, and machining.
- Excellent Corrosion Resistance: Highly resistant to seawater, chlorides, acids, and alkalis; durable in harsh environments. Ideal for marine, chemical processing, and biomedical use
- Wide Range of Product Forms: Available as plates, pipes, tubes, wires, and more with relevant specifications certification (ISO, ASTM, ASME, etc.).
Applications
TA2 titanium is widely used in:
- Marine & Chemical Industries: Heat exchangers, piping systems, and equipment exposed to corrosive environments
- Aerospace & Structural Parts: Lightweight structures and marine hardware
- Medical & Biocompatible Uses: Surgical implants, medical tubing—certified for biocompatibility standards (e.g., ISO 10993)
- General Fabrication: Plates, wires, rods for industrial applications given its formability and weldability
Summary
- TA2 (Titanium Grade 2) is a commercially pure titanium grade offering a balance of enhanced strength, excellent corrosion resistance, and good ductility.
- It is stronger than TA1, yet still easy to fabricate and widely used across marine, chemical, medical, and aerospace industries.
- TA2 meets multiple national and international standards and comes in a variety of product forms.