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Don't look, don't know! Have you fallen for the eight common misconceptions about titanium metal?

The common misconceptions about titanium and titanium alloys are listed as some typical errors:

Misconception 1: Titanium conducts heat faster than aluminum

Correct solution: The thermal conductivity of titanium is very low, close to that of stainless steel, about 1/14 of aluminum and 1/5 of iron. Cooking is easy to burn due to this reason.

Misconception 2: High purity titanium has a high hardness

Correct solution: The hardness of pure titanium is very small, less than 120 Brinell hardness. But trace impurities can significantly increase its hardness, and its alloys are used outdoors.

Misconception 3: Titanium is a rare metal with very low content on Earth

Correct solution: Titanium accounts for 0.6% of the Earth's content, ranking ninth.

Misconception 4: Titanium has a lower specific gravity than aluminum

Correct solution: Titanium has a density of 4.51, while aluminum is less than 2.7. The aluminum pot is heavy because its thickness is too large! I really miss the old-fashioned round aluminum lunch box!

Mistake 5: The chemical activity of titanium metal is very low

Correct solution: Dense titanium is relatively stable in air, but has strong chemical activity at high temperatures. It can strongly interact with halogen elements, oxygen, sulfur, carbon, nitrogen, hydrogen, water vapor, carbon monoxide, carbon dioxide, and ammonia. Be careful when dry burning outdoors!

Misconception 6: Titanium metal has strong corrosion resistance to strong acids and bases

Correct solution: Titanium is easily soluble in hydrofluoric acid, concentrated sulfuric acid, concentrated hydrochloric acid, and aqua regia; Not soluble in alkaline solutions, but able to strongly interact with molten alkali.

Misconception 7: Titanium metal is not easily oxidized

Correct solution: Titanium metal, like aluminum, is prone to oxidation reactions, forming an oxide film that prevents further oxidation. The anodizing process is also easy to carry out.

Misconception 8: The vast majority of titanium products in the world are used in fields such as aerospace and heavy industry

Correct solution: The vast majority of titanium ore produced annually in the world is used to produce titanium dioxide pigments.

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