Titanium Bar Titanium Round Bar Ti Rod Grade 7 Grade 12 For Medical Implants in Medical Applications

Titanium Bar Titanium Round Bar Ti Rod Grade 7 Grade 12 For Medical Implants in Medical Applications

1. Introduction of Product:​

ASTM B348 is a specification that covers Titanium and Titanium Alloy Bars and Billets for use in various applications, including medical, aerospace, and industrial sectors. Grade 2 Titanium (also known as Commercially Pure Titanium or CP Titanium) is one of the most commonly used grades of titanium, known for its excellent corrosion resistance, biocompatibility, and lightweight nature.

2. Specifications of Titanium Grades:
 

Grade 7 (Gr 7) Titanium

• Composition: Grade 7 titanium is primarily made of titanium with a small amount of palladium (around 0.12-0.25%) added.
• Properties:
  • Excellent corrosion resistance, especially in acidic environments.
  • Higher weldability compared to other titanium alloys.
  • Similar mechanical properties to Grade 2 titanium, which is commercially pure titanium, but with enhanced corrosion resistance due to the addition of palladium.
• Applications: Commonly used in the chemical, marine, and aerospace industries, particularly where high corrosion resistance is needed, such as in reactors, heat exchangers, and marine environments.

Grade 12 (Gr 12) Titanium

• Composition: Grade 12 titanium is a combination of titanium, palladium (0.03-0.08%), and small amounts of other elements such as iron and molybdenum. It’s an alloy with better resistance to corrosion than pure titanium (Grade 2).
• Properties:
  • Superior corrosion resistance, especially to oxidizing acids like sulfuric and nitric acids.
  • Higher strength compared to Grade 7, making it more suitable for applications where strength and durability are needed.
  • Excellent weldability and formability.
• Applications: Used in applications like heat exchangers, chemical processing equipment, and other environments where both strength and corrosion resistance are critical, especially in more severe conditions compared to Gr 7.

Key Differences Between Gr 7 and Gr 12:

• Corrosion Resistance: Both grades offer superior corrosion resistance, but Grade 12 provides a higher level of resistance, especially to aggressive acidic environments.
• Strength: Grade 12 titanium has slightly higher strength compared to Grade 7.
• Cost: Grade 12 can be more expensive than Grade 7 due to its superior strength and corrosion resistance.

3. Forms of Grade 2 Titanium (ASTM B348)

Titanium Rods:

• Round bars are often used for creating components that require high strength and corrosion resistance.
• Available in a variety of diameters and lengths to meet application requirements.
• Ideal for machining into medical implants or industrial parts.

Titanium Round Bars:

• These are used in manufacturing various parts like fasteners, screws, and bearings in medical and aerospace industries.
• Round bars allow for flexibility in customization and precision cutting.

Titanium Welding Rods:

• Used for welding Grade 2 Titanium components.
• Titanium rods for welding are often alloyed with small amounts of nickel, aluminum, and vanadium to improve weldability and corrosion resistance.
• Welding rods are used to join titanium parts in industries like aerospace and medical manufacturing, where the strength of the welded joint is essential.

4. Exceptional Mechanical Properties

Grade 7 titanium, also known as Ti-0.2Pd, is renowned for its exceptional mechanical properties, making it a highly sought-after material in various industries. Here are some key aspects of its mechanical characteristics:

High Strength-to-Weight Ratio

Grade 7 titanium offers a remarkable strength-to-weight ratio, which allows for the production of lightweight yet strong components. This feature is particularly valuable in aerospace and automotive applications, where reducing weight without sacrificing strength is crucial.

Ductility

This alloy exhibits excellent ductility, enabling it to be easily formed and shaped without breaking. Its ability to undergo significant deformation before fracture allows for greater design flexibility in manufacturing processes.

Fatigue Resistance

Grade 7 titanium demonstrates outstanding fatigue resistance, making it ideal for components subjected to cyclic loading. This property enhances the longevity and reliability of parts used in demanding environments.

Impact Toughness

The material maintains good impact toughness, which is important for applications where sudden forces or shocks are encountered. This resilience helps prevent catastrophic failures in critical components.

Temperature Stability

Grade 7 titanium retains its mechanical properties at elevated temperatures, making it suitable for high-temperature applications. Its stability ensures consistent performance even under thermal stress.

Weldability

The alloy's excellent weldability allows for the fabrication of complex structures and components. This property facilitates the creation of strong joints, further enhancing its mechanical performance.

Corrosion Resistance

While primarily a chemical property, the corrosion resistance of Grade 7 titanium contributes indirectly to its mechanical performance by preventing degradation over time. This longevity ensures that the material can maintain its mechanical integrity in harsh environments.

5. Different Grades of Titanium:

Titanium rods are categorized into various grades, each with distinct compositions and properties tailored for specific applications.

• Grade 1: 99.5% pure titanium, offers excellent corrosion resistance and good formability, ideal for chemical processing and marine uses.
• Grade 2: 99.2% pure, balances strength and ductility, commonly used in aerospace and industrial sectors.
• Grade 3: Higher strength than Grade 2, suited for aerospace and military applications.
• Grade 4: Noted for exceptional strength, used in aerospace and chemical processing.
• Grade 5 (Ti-6Al-4V): The most popular alloy, known for its high strength-to-weight ratio, often used in aerospace and medical implants.
• Grade 6: Improved weldability and corrosion resistance, primarily for aerospace and chemical industries.
• Grade 7: Contains 0.2% palladium for enhanced corrosion resistance in acidic environments.
• Grade 9 (Ti-3Al-2.5V): Good weldability and corrosion resistance, suitable for aerospace and medical uses.
• Grade 23 (Ti-6Al-4V ELI): Known for biocompatibility, making it ideal for medical implants.

6. Chemical Composition

7. Applicationsof Titanium Rod: