ASTM B348 Grade 2 Gr2 Titanium Rod Titanium Round Bar Titanium Welding Rod Commercially Pure Titanium

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.

Below is an overview of ASTM B348 Grade 2 (Gr2) Titanium Rod, Round Bar, and Welding Rod:

1. Overview of Grade 2 Titanium (CP Ti)

Material Composition:
Grade 2 Titanium is composed of 99% pure titanium, with trace amounts of other elements like oxygen, nitrogen, and carbon. It has minimal alloying elements, which gives it its characteristic properties:

• Aluminum: ~0.2% max
• Iron: ~0.3% max
• Oxygen: ~0.18% max
• Carbon: ~0.08% max

• Properties:

  • Tensile Strength: 50-70 ksi (345-485 MPa)
  • Yield Strength: 40 ksi (275 MPa)
  • Elongation: 20-30%
  • Density: 4.51 g/cm³
  • Corrosion Resistance: Excellent in a variety of environments, including body fluids and seawater.
  • Workability: Very good, especially for applications requiring welding or machining.
  • Biocompatibility: Highly biocompatible, making it suitable for medical implants.

Specifications of Titanium Grades:

2. Applications of Grade 2 Titanium

Grade 2 Titanium is widely used in industries that require corrosion resistance, strength, and light weight. Common applications include:

• Medical implants: Bone plates, screws, dental implants, and surgical instruments. Its biocompatibility makes it an excellent choice for these applications.
• Aerospace components: Used for components exposed to harsh environments (e.g., aircraft structures, engine parts).
• Marine industry: For seawater-resistant parts like heat exchangers and valves.

Chemical processing: Pumps, valves, and tanks where corrosion resistance is critical.

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. Benefits of Grade 2 Titanium Rod, Round Bar, and Welding Rod

• Biocompatibility: Titanium Grade 2 is widely used in medical applications because it is well-tolerated by the human body, with minimal adverse reactions when implanted.
• Corrosion Resistance: Grade 2 Titanium is highly resistant to corrosion in a range of environments, including acidic, basic, and high-temperature conditions, making it ideal for applications in seawater, chlorine environments, and body fluids.
• Strength-to-weight Ratio: Titanium has an excellent strength-to-weight ratio, which makes it an ideal material for aerospace and marine applications.
• Ease of Welding: Titanium can be welded with high precision, and Grade 2 Titanium welding rods are used in high-performance applications, ensuring strong, durable, and high-quality welds.

5. Welding of Grade 2 Titanium

• Welding Process:

  • Grade 2 Titanium is typically welded using techniques like TIG (Tungsten Inert Gas) welding or MIG (Metal Inert Gas) welding.
  • The welding rods used are usually made from Grade 2 titanium or a titanium alloy with a similar composition, ensuring the weld joint retains the desired strength and corrosion resistance.

• Precautions:

  • Grade 2 Titanium can be sensitive to contamination during welding, so it’s important to maintain a clean, controlled environment during the process (e.g., inert gas shielding).
  • Proper welding techniques should be employed to avoid issues such as oxidation or embrittlement of the material.

6. Summary of ASTM B348 Grade 2 Titanium Features