Titanium: Son of the Earth - Part 1 [Best of 2016]

As strong as steel but half the weight, titanium is a favorite among aircraft builders.


Part 1 of a 3-part series on the history of titanium, its many uses, and how to machine this important metal.

There are dozens of titanium grades and alloys. The most common of these is Ti-6Al-4V, or Grade 5 titanium, which contains 6% aluminum and 4% vanadium. It is recommended for service temperatures up to approximately 350°C (660°F), and has an ultimate tensile strength of 950MPa (138,000psi), three times that of 6061-T6 aluminum and half again as strong as 316 stainless steel. Ti-6Al-4V accounts for 50% of all titanium usage globally.

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