Embedded material of austenitic stainless steel in medical use
A technology of austenitic stainless steel and stainless steel, applied in the direction of prosthesis, medical science, etc., can solve the problems affecting coronary stent restenosis, and achieve the effect of low cost, improved long-term use safety, and excellent combination of strength and toughness
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[0025] According to the chemical composition range set by the present invention, 4 heats of steel were smelted in a vacuum induction furnace with a capacity of 25 kg, and the specific chemical composition is as shown in Table 1. These 4 furnaces of steel were poured into φ120×450 steel ingots respectively, and processed according to the above processing and heat treatment specifications.
[0026] All test specimens are sampled vertically along the rolling direction, and after the above heat treatment, the steel of the present invention is a single austenitic structure (such as figure 1 Shown), the measured mechanical properties are shown in Table 2. The anodic polarization curve of medical nickel-free austenitic stainless steel in equivalent physiological solution at 37°C was studied by electrochemical method. The results showed that the corrosion resistance of the new nickel-free stainless steel was better than that of medical 316L stainless steel, especially pitting propert...
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