The service temperature is several hundred degrees higher than that of aluminum alloy. It can maintain the required strength at medium temperature and work for a long time at 450-500 degree . The specific strength is still very high in the range of 150-500 degree .

The specific strength of aluminum alloy decreases at 150 degree . , the working temperature of titanium alloy can reach 500 degree , and the working temperature of aluminum alloy is below 200 degree .