ASTM B265 Titanium Sheet Titanium Metal Plate Grade 7 For Industrial And Manufacturing

Product Introduction

Titanium plates are widely used across various industries due to their unique properties. Firstly, they have a high strength-to-weight ratio, being significantly lighter than steel while maintaining comparable strength, making them ideal for applications with strict weight requirements. Additionally, titanium exhibits exceptional corrosion resistance, particularly in marine and chemical environments, effectively extending the lifespan of components made from it. Its biocompatibility makes titanium suitable for medical applications, such as implants and prosthetics. It can also withstand high temperatures without losing its mechanical properties, which is advantageous in aerospace and industrial applications.

Titanium plates are also relatively easy to weld, allowing for versatile fabrication and assembly. Their good ductility enables them to be formed into complex shapes without cracking. Furthermore, titanium's low coefficient of thermal expansion ensures stability under varying temperature conditions, which is crucial for precision applications. While titanium is not as conductive as metals like copper, it still possesses adequate electrical conductivity for certain applications. Finally, titanium plates demonstrate excellent fatigue resistance, making them suitable for use in cyclic loading applications, such as aerospace components. Therefore, titanium plates excel in multiple fields due to their strength, lightweight nature, and resistance to environmental factors.

Product Description

Grade 7 Titanium (Ti-0.2Pd) is a titanium alloy known for its excellent corrosion resistance and high strength-to-weight ratio. It combines titanium with a small amount of palladium, enhancing its performance in harsh environments, especially in chemical processing and marine applications.

Key Characteristics

1. Chemical Composition:

   • Titanium: Approximately 90%
   • Palladium: 0.2% (provides enhanced corrosion resistance)

2. Mechanical Properties:

   • Tensile Strength: Around 850 MPa (123 ksi)
   • Yield Strength: Approximately 780 MPa (113 ksi)
   • Elongation: 10-15%
   • Hardness: Typically between 250-300 HB

3. Corrosion Resistance:

   • Exceptional resistance to acids and chlorides, making it suitable for environments that are chemically aggressive, such as those found in chemical processing and petrochemical industries.

4. Ductility:

   • Maintains good ductility, allowing for various forming and shaping processes without compromising material integrity.

5. Weldability:

   • Grade 7 can be welded using standard titanium welding techniques, although proper precautions must be taken to prevent contamination.

Differenent Grades of Titanium Plate

Titanium Grade 2

• Composition: Primarily titanium with small amounts of iron and oxygen.
• Strength: Moderate strength (yield strength around 275 MPa or 40,000 psi).
• Corrosion Resistance: Excellent corrosion resistance, making it suitable for chemical processing and marine applications.
• Weldability: Good weldability and formability; can be easily welded and fabricated.
• Applications: Commonly used in the aerospace, medical, and marine industries.

Titanium Grade 5 (Ti-6Al-4V)

• Composition: Titanium alloyed with 6% aluminum and 4% vanadium.
• Strength: High strength (yield strength around 880 MPa or 128,000 psi), significantly stronger than Grade 2.
• Weight: Lightweight, combining strength with low density.
• Corrosion Resistance: Good corrosion resistance, though not as excellent as Grade 2 in some environments.
• Weldability: More challenging to weld compared to Grade 2, often requiring specific techniques.
• Applications: Widely used in aerospace, automotive, and medical implants due to its strength-to-weight ratio.

Titanium Grade 7

• Composition: Titanium alloyed with 0.15% palladium.
• Strength: Moderate strength, similar to Grade 2 (yield strength around 275 MPa or 40,000 psi).
• Corrosion Resistance: Excellent corrosion resistance, particularly in acidic environments, due to the presence of palladium.
• Weldability: Good weldability and formability, allowing for ease of fabrication.
• Applications: Commonly used in chemical processing, oil and gas, and marine environments where superior corrosion resistance is required.

Summary of All Three Grades

• Grade 2: Good weldability, excellent corrosion resistance, moderate strength.
• Grade 5: High strength, lightweight, more challenging to weld, suitable for demanding applications.
• Grade 7: Similar strength to Grade 2, enhanced corrosion resistance due to palladium, good weldability.

Differences between Grade 5 and Grade 7 Titanium Plate

Grade 5 and Grade 7 titanium plates are both popular titanium alloys, but they have distinct differences in composition, properties, and applications. Here’s a breakdown of their main differences:

Composition

• Grade 5 (Ti-6Al-4V): This alloy contains 90% titanium, 6% aluminum, and 4% vanadium. The addition of aluminum enhances strength and weight reduction, while vanadium contributes to improved corrosion resistance and weldability.

• Grade 7 (Ti-0.2Pd): This alloy consists of 90% titanium and 0.2% palladium. The palladium enhances corrosion resistance, especially in reducing environments, making it particularly effective in chemical processing applications.

Mechanical Properties

• Strength: Grade 5 is known for its high strength-to-weight ratio, making it ideal for applications requiring lightweight yet strong materials. It has a yield strength of about 880 MPa (127 ksi).

• Corrosion Resistance: Grade 7 exhibits superior corrosion resistance compared to Grade 5, especially in acidic environments. This makes it suitable for applications in chemical and petrochemical industries.

Fabrication and Weldability

• Weldability: Grade 5 has good weldability but requires careful control of heat during welding to prevent the formation of alpha case and other issues.

• Grade 7: While also weldable, the presence of palladium can affect the welding process, and additional care may be necessary to maintain corrosion resistance.

Applications

• Grade 5: Commonly used in aerospace, automotive, and medical applications, where strength and lightweight characteristics are critical. Applications include airframe components, engine parts, and surgical implants.

• Grade 7: Primarily used in chemical processing, marine environments, and other applications where enhanced corrosion resistance is crucial. Common applications include heat exchangers, pressure vessels, and components in chlorine and sulfuric acid processing.

Technical Parameters

Titanium Sheet and Plate

We can supply a wide selection of titanium sheets and plates for fabrication and engineering projects. They can be precision-cut to your specifications and come with a selection of surface finishes.

Production Standards:

Sheets and plates follow ASTM B265, AMS 4920, ASME SB265, ASTM SB 265, and DIN 17860 specifications.

Titanium Grades:

Grades available include Gr1, Gr2, Gr10 or 5 (6Al-4V), 7 (Ti-0.15Pd), 9 (3Al-2.5V), etc.

Titanium Sheet Surface Finishes:

Recommended finishes for titanium sheet include polished, mill, pickling, painted, brushed, or blasted.

Corrosion Resistance of Gr5 Titanium

One of the standout features of Gr5 titanium is its exceptional corrosion resistance, which is primarily attributed to the formation of a protective oxide layer on its surface. When exposed to oxygen, titanium naturally forms a thin, stable oxide layer that acts as a barrier against further oxidation and corrosion. This passive layer is highly adherent and self-healing, meaning that if it is damaged, it can regenerate in the presence of oxygen. The corrosion resistance of titanium alloys like Gr5 is significantly superior to that of conventional metals such as steel, making them ideal for use in aggressive environments.

In practical applications, the corrosion resistance of Gr5 titanium plates has been demonstrated in various environments, including seawater, acidic solutions, and high-temperature applications. This capability makes Gr5 titanium a preferred choice for components in offshore structures, chemical processing plants, and even biomedical implants. The longevity of Gr5 titanium parts translates to reduced maintenance costs and downtime, which is particularly valuable in critical industries where reliability is paramount. The combination of hot rolling and pickling further enhances this resistance, ensuring that the material can withstand prolonged exposure to corrosive agents.

Manufacturing Considerations and Quality Control

Manufacturing pickled hot rolled titanium sheets requires careful attention to detail throughout the production process. Here are the key considerations and quality control measures:

1. Production Process

• Forging: The initial step where titanium is shaped under heat and pressure. This process enhances the material's mechanical properties and structure.
• Rolling: Hot rolling reduces the thickness of the titanium sheets while improving their uniformity and mechanical properties. The temperature and rolling speed must be closely monitored to prevent overheating, which can lead to unwanted microstructural changes.
• Heat Treatment: Post-rolling heat treatment is crucial for achieving the desired mechanical properties, such as strength and ductility. Parameters like temperature and duration are meticulously controlled to avoid defects.

2. Clean Production Environment

• Contamination Control: Titanium is highly reactive with elements like oxygen and nitrogen, which can lead to embrittlement and compromised performance. A clean environment, free from contaminants, is essential throughout the manufacturing process.
• Material Handling: Tools and surfaces that come into contact with titanium should be cleaned regularly to minimize contamination risks.

3. Welding and Fabrication Techniques

• TIG Welding: This specialized welding method is preferred for titanium due to its precision and ability to produce strong, clean welds. The process requires careful control of the heat input to avoid altering the material's properties.
• Shielding: Effective shielding from atmospheric contaminants during welding is critical. This typically involves using inert gases like argon to create a protective atmosphere around the weld area, preventing oxidation and contamination.

4. Quality Control Measures

• Non-Destructive Testing (NDT): Techniques such as ultrasonic testing and radiography are employed to detect internal flaws and ensure the integrity of the titanium sheets without damaging them.
• Surface Inspections: Regular inspections for surface defects, such as pitting or cracks, are conducted to maintain high-quality standards. This includes visual inspections and the use of surface analysis techniques.

5. Compliance with Standards

• Adhering to industry standards and specifications, such as ASTM B265, is essential to ensure that the titanium sheets meet the required performance criteria for their intended applications.

Sustainability and Environmental Impact

1. Material Properties and Lifecycle:

• Durability: Titanium Grade 5 (Ti-6Al-4V) is known for its exceptional strength-to-weight ratio and corrosion resistance, leading to longer service life and reduced need for replacements.
• Recyclability: Titanium is highly recyclable without loss of quality. Scrap material from manufacturing processes can be reused, reducing resource extraction and waste.

2. Extraction and Production:

• Resource Extraction: Titanium is primarily extracted from mineral sands through mining, which can lead to habitat disruption and energy-intensive processes. However, advancements in mining and processing technologies are improving efficiency and minimizing environmental impact.
• Production Footprint: The production of titanium involves significant energy consumption, particularly in the extraction and processing phases. Using renewable energy sources in manufacturing can mitigate this impact.

3. Applications in Sustainable Industries:

• Aerospace: Grade 5 titanium is widely used in aerospace applications, contributing to lighter aircraft designs that enhance fuel efficiency and reduce greenhouse gas emissions.
• Medical: In the medical field, titanium implants improve patient outcomes and longevity, which aligns with sustainability goals in healthcare.

4. End-of-Life Considerations:

• Recycling: At the end of its lifecycle, titanium components can be recycled, preserving material value and reducing landfill waste. Efforts in developing efficient recycling processes are ongoing to enhance this aspect.

5. Environmental Benefits:

• Corrosion Resistance: Titanium’s resistance to corrosion means lower maintenance and replacement costs, leading to a reduced environmental footprint over time.
• Lightweight Properties: The lightweight nature of Grade 5 titanium reduces energy consumption in applications like transportation, contributing to lower carbon emissions.

6. Challenges and Opportunities:

• Mining Impact: The environmental impact of titanium mining and processing remains a concern, prompting the need for stricter regulations and sustainable practices in the industry.
• Innovation: Ongoing research into more sustainable extraction and processing methods can further enhance the environmental profile of titanium.

Conclusion

In summary, pickled hot rolled titanium sheets, specifically ASTM B265 Grade 2 and Grade 5, represent a vital component of modern engineering across diverse industries. Their unique properties, including excellent corrosion resistance, high strength, and lightweight nature, make them indispensable in applications ranging from aerospace to medical implants. As the demand for advanced materials continues to grow, the significance of these titanium grades will only increase, driving innovation and efficiency in various sectors. Ultimately, the investment in titanium technology will yield substantial benefits, enhancing performance while promoting sustainability in manufacturing and engineering practices.