Classification Of Titanium Alloys

Titanium is an isomer, melting point is 1668℃, below 882℃ in the dense hexagonal lattice structure, called αtitanium; Above 882℃, the body-centered cubic lattice structure is called β-titanium. Based on the different characteristics of the above two structures of titanium, appropriate alloying elements were added to make the phase transformation temperature and phase fraction content of titanium alloys change gradually to obtain titanium alloys with different tissues. At room temperature, titanium alloy has three kinds of matrix structure, titanium alloy is divided into the following three categories: α alloy,(α+β) alloy and β alloy. China is represented by TA, TC and TB. It is a biphasic alloy, has good comprehensive properties, good structure stability, good toughness, plasticity and high temperature deformation properties, can be better for hot pressure processing, can be quenched, aging to strengthen the alloy. The strength after heat treatment is about 50% ~ 100% higher than that after annealing; High temperature strength, can work in 400℃ ~ 500℃ temperature for a long time, its thermal stability is inferior to α titanium alloy.

Among the three titanium alloys, the most commonly used are α titanium alloy and α+β titanium alloy; The cutting performance of α titanium alloy is the best, followed by α+β titanium alloy, and β titanium alloy is the worst. α titanium alloy code for TA, β titanium alloy code for TB, α+β titanium alloy code for TC.

Titanium alloy can be divided into heat resistant alloy, high strength alloy, corrosion resistant alloy (titanium - molybdenum, titanium - palladium alloy, etc.), low temperature alloy and special function alloy (titanium - iron hydrogen storage material and titanium - nickel memory alloy). The composition and properties of typical alloys are shown in the table.

Different phase compositions and microstructure of heat-treated titanium alloys can be obtained by adjusting the heat treatment process. It is generally believed that fine equiaxed structures have better plasticity, thermal stability and fatigue strength. The spiculate structure has high durability, creep strength and fracture toughness. Equiaxial and needle-like mixed tissues have better comprehensive properties.

If you have any questions, please contact us. Our company can produce various customized needles, medical needles, puncture needles, hypodermic needles, biopsy needles, vaccine needles, injection needles, syringe needles, veterinary needles, pencil point needle, ovum pick up needles, spinal needles, etc. If you need customized needle products, please contact us. We look forward to your inquiry! The quality of the products manufactured in our factory will surely satisfy you!

Please contact us if you need: zhang@sz-manners.com