Medical steel plate material T stands for titanium alloy material.

　　They represent pure titanium, and the materials used in orthopedic implantable medical devices are pure titanium, titanium alloy, stainless steel and cobalt-based alloy, which are coded as A, T, S and C respectively. Pure titanium is the best material.

　　Titanium alloy refers to a variety of alloy metals made of titanium and other metals. Titanium is an important structural metal developed in 1950s. Titanium alloy has high strength, good corrosion resistance and high heat resistance. From 1950s to 1960s, it mainly developed high-temperature titanium alloys for aero-engines and structural titanium alloys for airframes. A number of corrosion-resistant titanium alloys were developed in 1970s. Since 1980s, corrosion-resistant titanium alloys and high-strength titanium alloys have been further developed. Titanium alloys are mainly used to make compressor parts of aircraft engines, followed by structural parts of rockets, missiles and high-speed aircraft.