Tag Titanium

Early titanium alloy materials were often used in the military and aerospace industries, because of their characteristics of acid and alkali resistance, good corrosion resistance, and excellent strength at high and low and normal temperature, small expansion coefficient, high fatigue strength, non-magnetic materials and specific gravity ratio General metals are low.

1. Superior physical properties: low density, lightweight, small coefficient of thermal expansion, non-magnetic, high resistivity, low thermal conductivity.

2. Mechanical properties: high-temperature resistance, low metal fatigue, good toughness, and high strength.

3. Chemical properties: anti-corrosion, anti-creep, anti-oxidation, non-toxic, antibacterial.

According to international common standards can be divided into Grade 1, Grade 2, and Grade 5. Other country like TC1, TC2, TA1, TA2, etc.

Titanium alloys can be divided into:

α alloy

α-alloy is a single-phase alloy formed by solid-solution of α-phase stable elements and neutral elements in α-phase. Ti-5Al-2.5Sn is the most representative. This type of alloy has stable performance at high and low temperatures, ductility and creep resistance. Both are good.

α+β alloy
In α+β alloys, the content of α and β phases is greatly affected by α stable elements and β stable elements, and the properties are also significantly different. When the content of β phase is small, the behavior of the alloy is similar to that of α alloy, and on the contrary, if the content of α phase is small, the behavior of the alloy is similar to that of β alloy. The most representative of α+β alloys is Ti-6Al-4V. Those with more β phase content include Ti-6Al-6V-2Sn and Ti-6Al-2Sn-4Zr-6Mo. The amount of Ti-6Al-4V accounts for about 70% of all titanium alloys.

β alloy

The β-alloy has a quasi-stable body-centered cubic packing (BCC) structure at room temperature and is a single β-phase alloy. The cold workability of this type of alloy is better than that of α+β alloy. After age hardening treatment, the tensile strength can reach 150kgf/mm², and the yield strength can reach 140 kgf/mm². Representative such alloys are Ti-15V-3Cr-3Su-3Al, Ti-10V-2Fe-3Al and Ti-13V-11Cr-3Al.