Overview
Titanium foil, strip, and plate are semi-finished titanium products with varying thicknesses, catering to different industrial needs. Titanium foil typically refers to thin sheets (below 0.1mm), strips are narrow rolls of intermediate thickness, while plates are thicker (usually above 6mm). These products are manufactured from commercially pure titanium or titanium alloys through hot/cold rolling processes. As premium metallic materials, they combine unique properties including exceptional corrosion resistance (superior to stainless steel), high specific strength, and excellent biocompatibility. This makes them indispensable in critical applications where material performance outweighs cost considerations.
Physical and Chemical Properties
Titanium products exhibit remarkable physical properties: about 45% lighter than steel with comparable strength, thermal conductivity approximately 1/6 that of aluminum, and a thermal expansion coefficient about 50% of stainless steel. The naturally forming oxide layer provides outstanding corrosion resistance against seawater, chlorides, and many acids. Chemically, titanium is amphoteric - reacting with both strong acids and bases at elevated temperatures. Its passive oxide layer (TiO₂) reforms instantly when damaged, maintaining corrosion protection. The material maintains mechanical properties from cryogenic temperatures up to about 600°C, outperforming most structural metals.
Main Applications
In aerospace, titanium plate forms structural components in aircraft and spacecraft, while foil serves in heat shields and ducting. The medical industry utilizes high-purity titanium strip for surgical implants and dental prosthetics due to its osseointegration capabilities. Chemical processing plants employ titanium plate in reactors and heat exchangers handling corrosive media. Emerging applications include offshore oil platforms, desalination plants, and high-performance automotive components where weight savings and durability are paramount.
Safety and Storage
While titanium is non-toxic and biocompatible, titanium dust from machining requires proper ventilation as it may pose explosion and inhalation risks. Store products in original packaging or protected from mechanical damage and contamination. Long-term storage should prevent galvanic corrosion when contacting dissimilar metals. For critical applications, surface passivation treatments may be specified to enhance the natural oxide layer's protective qualities.
B2B Procurement Guide
When sourcing titanium products, clearly specify: material grade (ASTM B265 standards), dimensions (thickness/width tolerances), surface finish (polished, pickled, or mill finish), and required certifications (mill test reports). Lead times can be significant for specialized products. For cost-sensitive projects, consider commercially pure grades (Grade 1-4) where possible. For structural applications, alloy grades like Grade 5 (Ti-6Al-4V) offer superior strength. Establish supplier qualifications for traceability and quality control in medical and aerospace applications.
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