Grade 7 Ti-0.15Pd
Titanium & Titanium Alloy Grades
Grade 7
Titanium Grade 7 is an alloy of titanium known for its excellent corrosion resistance, particularly in harsh environments.
Common Grade 7 Products
Titanium Bar
Titanium Sheet
Key characteristics and properties of Titanium Grade 4:
Composition
The typical chemical composition of Titanium Grade 3 is as follows:
- Base Element: Titanium (~99.2% Ti)
- Alloying Element: Palladium (~0.12%-0.25% Pd)
Titanium Grade 7 is a specialized material that excels in environments where corrosion resistance is critical, making it a top choice in specific industrial applications.
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- Titanium Grade 7 is highly resistant to corrosion, especially in environments containing chlorides and acids. The addition of palladium enhances its corrosion resistance, making it superior to commercially pure titanium (such as Grade 2).
- It performs exceptionally well in reducing and oxidizing media, making it ideal for applications involving corrosive chemicals, such as in chemical processing industries.
Mechanical Properties:
- Tensile Strength: Similar to Titanium Grade 2, with a tensile strength around 345 MPa (50 ksi).
- Ductility: Good ductility, allowing for easy fabrication and forming.
- Weldability: Excellent weldability, like most titanium grades, which makes it suitable for various manufacturing processes.
Applications:
- Chemical Processing: Used in heat exchangers, reactors, and piping systems that handle corrosive chemicals.
- Marine Environments: Ideal for use in seawater applications due to its resistance to pitting and crevice corrosion.
- Desalination Plants: Suitable for components exposed to brine and other aggressive media.
- Power Generation: Used in components of power plants, particularly in the nuclear industry, due to its resistance to hydrogen embrittlement and corrosion.
- Density: ~4.51 g/cm³, similar to other titanium grades.
- Melting Point: ~1660°C (3020°F), providing good thermal stability.
- Thermal Conductivity: Lower than that of some metals, which can be an advantage in high-temperature applications.
- Versus Grade 2: While both have similar mechanical properties, Grade 7 offers much better corrosion resistance due to the addition of palladium.
- Versus Grade 5: Grade 5 (Ti-6Al-4V) is stronger and used in more structural applications, whereas Grade 7 is preferred for corrosion resistance in specific environments.
- Cost: The addition of palladium makes Grade 7 more expensive than other titanium grades like Grade 2.
- Availability: Less commonly available than more widely used grades like 2 or 5, which might limit its use in some industries.
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