Overview
Titanium foil (thickness <0.1mm), strip (narrow widths), and sheet (thickness 0.1–6mm) are semi-finished products made from pure titanium or titanium alloys like Ti-6Al-4V. They are produced via hot/cold rolling and precision annealing, offering exceptional mechanical properties and chemical stability. These forms are favored in industries where weight savings and durability are critical, such as aerospace structural components or medical device casings. Their non-reactive surface also makes them ideal for corrosive environments, including seawater and chemical processing equipment.
Physical and Chemical Properties
Titanium’s low density (40% lighter than steel) combined with tensile strength comparable to some steels gives it an unmatched strength-to-weight ratio. Its oxide layer forms spontaneously, providing resistance to rust, chlorine, and organic acids. Notably, commercially pure titanium (Grades 1–4) offers maximum corrosion resistance but lower strength, while alloyed grades (e.g., Grade 5) enhance mechanical performance at slight cost to chemical inertness. Electrical conductivity is moderate, and thermal expansion is relatively low, minimizing distortion under heat.
Main Applications
In aerospace, titanium sheets are used for airframe skins and engine components, reducing weight without sacrificing strength. The medical field relies on foil/strip for surgical meshes and dental implants due to biocompatibility and MRI compatibility. Industrial applications include heat exchangers, desalination plants, and electrochemical anodes. Thin foils also serve as sputtering targets in semiconductor manufacturing or as decorative architectural cladding with long-term weather resistance.
Safety and Storage
Titanium is non-flammable and poses minimal health risks in solid form. However, grinding or cutting generates fine particles that require dust extraction to prevent inhalation hazards. Store away from fluorine or chlorine compounds to avoid exothermic reactions. Packaging typically involves plastic interleaving to prevent surface scratches. For high-purity applications like medical devices, vacuum-sealed storage with desiccants is recommended to maintain cleanliness.
B2B Procurement Guide
Buyers should specify dimensions (thickness/width/length), alloy grade, and ASTM/AMS standards (e.g., ASTM B265). Surface finishes range from matte (mill finish) to mirror-polished, affecting cost and performance. Lead times can be lengthy for custom sizes; stocking distributors often carry standard gauges. Pricing fluctuates with titanium sponge (raw material) market trends. For large orders, negotiate bulk discounts and verify supplier certifications like ISO 9001 or AS9100 for aerospace use.
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