Titanium ultra-fine wire, as a precision representative of the titanium metal material family, has opened up unique application dimensions in high-end manufacturing with its extreme thinness and exceptional performance.
This titanium wire is made from high purity titanium raw materials (such as Gr1, Gr5 and other alloy systems), through multiple passes of cold drawing, electropolishing and other precision processes, and the diameter is usually less than 0.1mm (as small as 5μm). The diameter tolerance can be up to ±0.5μm and the surface roughness Ra is <=0.2μm, it's demonstrate incredible dimension accuracy. For example, Gr1 titanium ultra-fine wire has the tensile strength of 380-580 MPa, elongation of >=25%, and the density is only 4.5g/cm³. It has super flexibility and a strong resistance to fatigue, can endure over 100,000 times of bending without breaking – a quality that is way beyond that of stainless steel fine wire and nickel-base alloy wire, and it is still lightweight at that.
In application, titanium ultrafine wires with their unique "hair-thin yet strong" properties, have become indispensable materials in numerous areas. In medical applications, gr1 titanium ultrafine wires of 10-50μm diameter are woven into cardiovascular stents. Their biocompatibility and resistance to corrosion from bodily fluids prevents the risk of thrombosis post-implantation, and the ultra-fine 0.03mm diameter facilitates the minimal invasive application of stent implantation. In ophthalmic operations, titanium ultrafine wire microsurgical suture accurately aligns corneal tissues allowing less risk of postoperative scarring. In electronics, Gr5 titanium ultrafine wires are used for 5G chip bonding wires.
Although their conductivity is about half that of gold wires, their strength is over 1100MPa, which allows mechanical stress application in high-speed packaging. Moreover, they have good resistivity stability over a temperature range from -200℃ to 300℃, satisfying the requirement of electronic devices under severe environments. In aerospace, reinforced titanium ultrafine wire and carbon fiber based materials are formed to make satellite antenna support meshes.
These materials weigh only one-third of traditional metal meshes while enhancing resistance to cosmic radiation by 50%. For instance, a parabolic antenna for a certain Mars probe employs a 0.08mm Gr5 titanium ultrafine wire weaving structure.
In the field of precision filtration and sensors, titanium ultra-fine wires are processed through electrochemical corrosion to create filter meshes with pore sizes of 5-10μm, used for purifying lithium battery electrolytes. Their resistance to organic acid corrosion enhances filtration efficiency by three times compared to stainless steel filters. In hydrogen fuel cells, titanium ultra-fine wires woven into catalytic layer carriers, with their high specific surface area and hydrogen embrittlement resistance, help improve battery energy density. Additionally, titanium ultra-fine wires serve as balance spring materials in high-end wristwatch movements, where their low magnetic permeability and thermal stability ensure timekeeping accuracy fluctuates by no more than 5 seconds per day within a 10℃ temperature range, far surpassing traditional alloy balance springs.
The production of titanium ultrafine wire relies on extremely precise process control, starting with vacuum melting of the initial billet. It is essential to strictly control the content of interstitial elements such as oxygen and nitrogen (oxygen content in Grade 1 titanium wire <=0.18%). During cold drawing, diamond dies and specialized lubricants are employed, with deformation per pass controlled between 8% and 12%, while vacuum annealing is used to eliminate internal stress. In the electrolytic polishing stage, the temperature of the electrolyte (20-25℃) and current density (5-10A/dm²) are precisely regulated to ensure the wire surface is free of microcracks. This process enables titanium ultrafine wire to directly meet the ISO 13485 hygiene standards in fields such as medical devices.
Now with the development of MEMS(Micro-Electro-Mechanical Systems) and nanotechology, titanium ultra-fine wires are also being used in new areas such as micro-sensor, flexible electronic device.. As a professional foreign trade enterprise, we provide a wide range of titanium ultra-fine wire products, Gr1, Gr2, Gr5 and other grades of special wire with thickness between 0.01 to 0.1mm.
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