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Pure Titanium and Titanium Alloy

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Commercially pure titanium (CP-Ti) versus titanium alloy (Ti6Al4V)


Titanium is available on the market as pure titanium and titanium alloy.


Pure titanium has a crystalline structure of alpha type (compact hexagonal) and it is classified in 6 types, each one of them including a different quantity of impurities (interstitial elements).


Grades with greater purity, defined by a reduced quantity of interstitial substances, are characterized by a low content of interstitial substances, and by lower hardness and resistance, but greater ductility.


Grade 1 is the most pure (99.5% of titanium); from gr. 1 to gr. 5 the quantity of substances decreases but the resistance increases.


The addition of alloying elements allows to achieve alpha, beta and alpha+beta type alloys with different characteristics compared with pure titanium, but more popular material due to the better relationship between weight and resistance and can be used in a wider number of applications.


About a half the production of titanium in represented by titanium gr. 5 (Ti-6Al-4V) characterized by an alpha+beta structure and it contains both alpha stabilizer (6% of aluminum) and beta—stabilizer (4% vanadium) elements, and other alloy elements in lower quantities.


The difference between Commercially pure titanium (CP-Ti) and titanium alloy (Ti6Al4V) is that an alloy is made up of titanium and other metals.


Because of its physical and mechanical characteristics, it is largely employed in the manufacture of titanium screws and mechanical components.

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