GRADE 4
Titanium & Titanium Alloy Grades
Grade 4
Titanium Grade 4 is a high-strength, corrosion-resistant material with excellent biocompatibility, making it suitable for demanding applications in the medical, aerospace, and chemical processing industries. Despite being harder to machine and form, its superior mechanical properties and performance in harsh environments justify its use in critical applications.
Common Grade 4 Products
Titanium Bar
Titanium Sheet
Key characteristics and properties of Titanium Grade 4:
Composition
Titanium Grade 3 is a commercially pure titanium alloy, which means it primarily consists of titanium with only small amounts of other elements. The typical chemical composition of Titanium Grade 3 is as follows:
- Main Element: Titanium (~99%).
- Alloying Elements: Small amounts of oxygen (0.18-0.4%), iron (0.5%), and carbon (0.08%), with trace amounts of nitrogen and hydrogen.
- Standard Specifications: ASTM B265, AMS 4901.
Titanium Grade 4 is known for its high strength, corrosion resistance, and excellent biocompatibility, making it ideal for critical applications in the medical, aerospace, and chemical processing industries. Though it is harder to machine and form, its superior mechanical properties and durability in harsh environments make it a valuable material for demanding applications.
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Key Properties
- Strength: Titanium Grade 4 is the strongest of the commercially pure titanium grades, offering a good balance of strength and ductility.
- Corrosion Resistance: Excellent resistance to corrosion, particularly in oxidizing and mildly reducing environments, making it suitable for marine and chemical applications.
- Density: Approximately 4.5 g/cm³, which is about 60% of the density of steel, offering a favorable strength-to-weight ratio.
- Biocompatibility: Highly biocompatible, making it ideal for medical implants and prosthetics.
- Thermal Properties: High melting point (~1660°C) and low thermal expansion, contributing to good stability in high-temperature environments.
Applications
- Medical: Dental implants, orthopedic devices, and other surgical implants due to its biocompatibility.
- Aerospace: Airframes, engine components, and fasteners, where high strength-to-weight ratios and corrosion resistance are critical.
- Chemical Processing: Heat exchangers, piping, and reactors that require resistance to corrosive chemicals.
- Marine: Components exposed to seawater, including propeller shafts and underwater hardware.
Fabrication
- Weldability: Good weldability, though it requires inert gas shielding to prevent contamination.
- Machinability: More challenging to machine than aluminum or steel, requiring specialized tools and techniques.
- Formability: Can be cold-formed, but requires more force than softer titanium grades.
- Grade 1: Offers lower strength but higher ductility and ease of forming.
- Grade 2: The most commonly used commercially pure titanium, providing a balance between strength and formability.
- Grade 3: Higher strength than Grade 2 but less formable.
OUR PRODUCTS
Titanium Products
