Titanium Foil Roll Gr2 ASTM B265 Foil Roll

The properties of titanium are closely related to temperature, morphology and purity. Dense titanium is fairly stable in nature, but powder titanium can cause spontaneous combustion in air. The presence of impurities in titanium significantly affects the physical, chemical, mechanical properties and corrosion resistance of titanium. In particular, some interstitial impurities can distort the crystal lattice of titanium and affect various properties of titanium. At room temperature, the chemical activity of titanium is very small and can react with a few substances such as hydrofluoric acid, but when the temperature increases, the activity of titanium increases rapidly, especially at high temperature, titanium can react violently with many substances. The smelting process of titanium is generally carried out at a high temperature above 800℃, so it must be operated in a vacuum or under the protection of an inert atmosphere.

In modern times, the methods of making metal foil include forging, vacuum evaporation, powder rolling, electrolysis and calendering, etc., but calendering and electrolysis are still the main methods in large-scale production. Calendering method to produce aluminum, foil as a representative, because of its use is very wide, so the development is extremely rapid, has formed an independent processing industry. Although both methods can be used in the production of copper, nickel and iron foil, electrolysis has obviously taken advantage. In calendering the foil is formed from thick to thin, while in electrolysis the foil is formed in reverse. Processing costs always increase with the increase of the process. Therefore, in addition to meeting performance requirements, thickness is also a factor to be considered when selecting a production method. Early copper foil production had been 0.8 mm as a boundary, thinner than its suitable electrolysis method. With the improvement of processing equipment and the boundary has been reduced to 0.2~0.4 mm. Calendered copper foil can be as thin as 6 microns, but the width is limited. In the future, the demand for thin and wide foil tends to be more and more. For example, copper foil half a meter wide and 50 microns thick has gradually been replaced by one meter wide and 35 microns thick. The widest one requires a width of up to two meters, so the calendering production is limited. The use of copper foil, electrolytic copper foil, has accounted for 90-95%. Others such as nickel, iron and alloy foil have similar trends.

Six big features:
1. High strength
2. The corrosion
3. High temperature resistance
4. Good low temperature resistance
5. Environmentally friendly metals
6. Good thermal conductivity