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Since the 1980s, the application of titanium bar for medicals and titanium alloy materials has been gradually matured, from the original ti-6a1-4v alloy to the current ASTM f1713-1996 and ASTM f1813-1997. However, since the beginning of the new century, the research on the harm of ti-6a1-4v alloy to human body has been more and more thorough, and the two newly developed alloy materials are more and more widely used.
Most research reports indicate that ti-6a1-4v alloy can cause osteoporosis and mental disorders, which has prompted more materials scientists to study new titanium alloy materials that do not contain V and A1. ASTM f1713-1996 and ASTM f1813-1997 were developed in such an environment.
Among them, ASTM f1713-1996 is a biotitanium alloy with excellent comprehensive properties such as low elastic modulus, high strength, high toughness, high fatigue strength and good biocompatibility developed by American scientists in the 1990s. Compared with ti-6a1-4v, ti-13nb-13zr alloy has 30% lower elastic modulus, 20% higher plane fracture toughness and 30%-40% lower bending and shear modulus.
ASTM f1813-1997 was developed by many famous international gold experts in recent years for biological applications. Compared with ASTM f1713-1996 alloy, ASTM f1813-1997 alloy has lower elastic modulus, strength and fracture toughness, and is a kind of sub-stable p-type biomedical alloy with good comprehensive performance.
At present, ASTM f1813-1997 alloy is widely used and mature in the field of medical orthopedics. Stryker joint, the world's largest orthopedic professional company, USES ASTM f1813-1997 alloy to manufacture the MeridianTMZF femoral shaft in the hip prosthesis system in quality and function, clinical effect has reached the highest standards of orthopaedic clinical requirements.
Of course, in addition to the application of titanium rods in the biomedical field, titanium tubes and titanium plates are involved in these fields and have a good development. In the future, the application of titanium and titanium alloy in the medical field will be more mature.
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