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Titanium is a chemical element with the symbol Ti, atomic number 22, and atomic weight 47.87. It is a lustrous silver-gray metal with a low density and high strength. Titanium is also highly corrosion-resistant, making it an ideal material for use in various industries such as aerospace, medicine, and the automotive industry.

- Low density: Titanium has a low density of 4.5 g/cm3, which is about 60% of the density of steel. This means that it is lightweight and easy to handle.

- High strength: Titanium has a high strength-to-weight ratio, making it ideal for use in applications where strength is important, such as aircraft design.

- Corrosion-resistant: Titanium has a high resistance to corrosion from various fluids and gases, including seawater, making it an ideal material for use in marine environments.

- Non-magnetic: Titanium is a non-magnetic metal, making it ideal for use in applications where magnetic interference is a concern, such as electronic devices.

Gold is a chemical element with the symbol Au, atomic number 79, and atomic weight 196.97. It is a soft, dense yellow metal that is highly sought after for use in jewelry, coins, and bullion due to its rarity and beauty.

- High density: Gold has a density of 19.3 g/cm3, making it one of the densest metals known to man. This means that it is heavy and can be difficult to handle.

- Malleable: Gold is a very malleable metal, meaning it can be easily shaped into various forms and designs.

- Ductile: Gold is also very ductile, meaning it can be stretched into thin wires without breaking.

- Corrosion-resistant: Gold is highly resistant to corrosion and tarnishing, making it an ideal material for use in jewelry and other decorative items.

- Difficulty in processing: Titanium is a notoriously difficult metal to process due to its strength and resistance to heat. This means that the processing costs are higher than those of gold, which is easier to work with.

- Availability: Titanium is a relatively rare metal compared to gold. This means that the availability of titanium is limited, driving up the price.

- Demand: Titanium is in high demand in various industries such as aerospace and medicine, where its unique properties make it an ideal material for use. This high demand drives up the price of the metal.

- Marketing: Titanium is often marketed as a premium material due to its strength, durability, and unique properties. This premium marketing has helped to drive up the price of titanium compared to other metals.