Nitinol wire, Nitinol memory high temperature wire, Nitinol memory super elastic wire

Nitinol types and main uses!

First, Nitinol alloy is widely used in all walks of life because of its high specific strength, good corrosion resistance and high temperature resistance. Titanium is rich and colorful in the Earth's crust, ranking ninth in composition, far higher than copper, zinc, tin and other common metals. Titanium is preva1ent in many rock formations, especially sand and clay.

Two, the characteristics of titanium strength is high: is 1.3 times of aluminum alloy, magnesium alloy 1.6 times, stainless steel 3.5 times, metal composite materials in the champion. High thermal strength: the application temperature is more than 1000 degrees higher than aluminum alloy, can be from 450 ~ 500℃ temperature for a long time. Good corrosion resistance: acid resistance, alkali resistance, atmospheric corrosion resistance, crevice corrosion, intergranular corrosion resistance is very strong. Ultra-low temperature performance is good: NitinolTi-5Al-2.5Sn  with very low void element can maintain a certain plasticity at -253℃. Large chemical activity: continuous high temperature chemical activity is very high, and hydrogen, oxygen and other vapor residue in the air chemical changes, the formation of hard substrate layer. Small heat transfer coefficient, small elastic mold: heat transfer coefficient is about 1/4 nickel. Iron 1/5. The heat transfer coefficient of various titanium alloys is about 50% lower than that of titanium. The elastic die of titanium alloy is about 1/2 that of steel.

Nitinol alloy can be divided into high temperature resistant alloy, high strength alloy, corrosion resistant alloy (Ti-Mo, Ti-palladium alloy, etc.), ultra-low temperature alloy and its characteristic functional alloy (Ti-iron hydrogen storage material and Ti-nickel memory alloy), etc.

Although the use of titanium and alloy is not long ago, but because of its extraordinary properties, it has already won several honorary titles. The first to win the title is Metal Material for Interior Space. It is light, strong and heat-resistant, especially suitable for the production of aircraft and various space shuttles. About three-quarters of the world's titanium and titanium alloys are now used in the space industry. Many components that used to be aluminum alloy were replaced with titanium alloy.

Four, the use of titanium alloy by airlines

Titanium alloy is mainly used in aircraft and engine production and manufacturing raw materials, such as calcined titanium fan, centrifugal compressor disc and leaf, engine cover plate, gas-water separator and other parts and the overall frame of aircraft beam frame. The shuttle uses Nitinol's high specific strength, corrosion resistance, and low temperature resistance to make a variety of high-pressure vessels, fuel tanks, standard parts, instrument bandages, frames, and rocket casings. Synthetic earth communication satellites, lunar module, manned spacecraft and aerospace aircraft are also using titanium alloy plate welding parts.