Comparison Between Titanium Foil Grades: Gr1 and Gr2
Introduction
Gr1 and Gr2 titanium foils are both commercially pure titanium materials, yet they have some differences in composition and performance that make them suitable for different applications. The comparison below provides insight into the key differences between Gr1 and Gr2 titanium foils in terms of chemical composition, mechanical properties, corrosion resistance, and common applications.
1. Chemical Composition and Purity
Gr1: The purest commercial titanium grade, with the highest titanium content and the lowest levels of impurities such as oxygen, nitrogen, and carbon.
Gr2: Slightly lower purity compared to Gr1, with a higher oxygen content (around 0.3%), resulting in higher strength but slightly reduced ductility.
2. Mechanical Properties
Gr1 offers superior ductility and flexibility, while Gr2 has greater strength, making it suitable for applications requiring more robust performance.
Property | Gr1 | Gr2 |
Tensile Strength | 240 MPa | 345 MPa |
Yield Strength | 170 MPa | 275 MPa |
Elongation | 24% | 20% |
Hardness | Lower than Gr2 | Higher than Gr1 |
3. Corrosion Resistance
Gr1: With fewer impurities, Gr1 offers slightly better corrosion resistance, ideal for highly corrosive environments.
Gr2: Also highly corrosion-resistant and widely used in various corrosive environments, though slightly less resistant than Gr1 in extreme conditions.
4. Applications
Gr1 Titanium Foil:
- Suitable for applications requiring ultra-high purity, such as chemical equipment and laboratory apparatus.
- Due to its flexibility, it is also commonly used in precision manufacturing and as a base layer for titanium alloy composites.
Gr2 Titanium Foil:
- Widely used in aerospace, marine engineering, and petrochemical industries, providing a good balance of strength and corrosion resistance.
- Common in medical equipment and automotive industries due to its strength and corrosion resistance.
Conclusion
The main differences between Gr1 and Gr2 titanium foils lie in purity and mechanical performance. Gr1 offers better flexibility and corrosion resistance, ideal for applications demanding high purity and pliability, while Gr2, with greater strength and suitable ductility, is optimal for a range of industrial applications.
