Pure titanium is a silver-white metal that has many excellent properties. Titanium's density is 4.54g/cm3, 43% lighter than steel, slightly heavier than the prestigious light metal magnesium. Mechanical strength is similar to steel, twice as large as aluminum, five times larger than magnesium. Titanium is resistant to high temperatures, melting point 1942K, nearly 1000K higher than gold, nearly 500K higher than steel. A, titanium wire specifications: φ0.8-φ6.0mm
B. Specification of titanium wire for eyeglasses: φ1.0-φ6.0mm special titanium wire.
C. Specification of titanium wire: φ0.2-φ8.0mm for hanging tools.
Main standards of titanium wire：gb/t,gjb,aws,astm,ams,jis
Carburized surface treatment
Titanium wire forms a stable carbide with carbon with high hardness. The growth of the carbide layer between titanium and carbon is determined by the rate of diffusion of titanium in the carbide layer.
The solubility of carbon in titanium is small, totaling 0.3% at 850X: and dropping to about 0.1% at 600CBecause of the small solubility of carbon in titanium, surface hardening is basically only achieved by the deposition of the titanium carbide layer and its lower forsaken domains. Carburizing must be carried out under the condition of removing oxygen, because the surface hardness of the surface layer formed by applying the commonly used carburizing powder for steel against carbon monoxide or carbon monoxide surface containing oxygen reaches 2700MPa and 8500MPa, and eye. It flakes off easily.
In contrast, a thin layer of titanium carbide may be formed when carburizing in charcoal under deoxidized or decarburized conditions. The hardness of this layer is 32 OUOMPa, which is consistent with the hardness of titanium carbide. The depth of the carburized layer is approximately greater than the depth of the nitrided layer when nitriding with nitrogen under the same conditions. Under oxygen-enriched conditions, it must be taken into account that oxygen absorption affects the depth of hardening. Only at very thin layer thicknesses, in a vacuum or in an argon-methane atmosphere infiltration of carbon powder is possible to form a sufficiently strong adhesion compared to the use of gas carburizing agents may form a particularly hard and well bonded hardened layer of titanium carbide. At the same time, hardened layers are formed at temperatures between 950 T: and 10201: at temperatures between 50 fim and. As the layer thickness increases, the titanium carbide layer becomes brittle and tends to flake off.t In order to avoid the intrusion of carbon inclusions into the titanium carbide layer due to the decomposition of raffinose, gas carburization should be carried out in an inert gas using a prescribed dose of additive with a volume fraction of approximately 2% raffinose. A lower surface hardness develops when methane carburizing is used with propane additives. When gas-carburized propane is used at bonding forces of up to 100 kPa, the hardened layer thickness measured is very thin, but it has the best wear resistance. Hydrogen is absorbed in the case of gaseous carburizers, but has to be removed again during vacuum annealing.
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