Abstract: The thermal expansion, specific heat, young’s modulus, thermal diffusivity and conductivity have been measured by differential methods, differential scanning calorimeter, resonance method and laser bombard method in this work. The results are shown as follows: linear thermal expansion coefficient of alloy increases with the increase of temperature, which is 23.26×10^-6℃ ^-1 from 20℃ to 300℃ ; specific heat has little change below 300℃; average specific heat is 0.2583 J/g℃ ; young’s modulus decrease with the increase of temperature, and thermal diffusivity and conductivity increase with the increase of temperature, which are 6.2GPa, 0.30810^-4m²/s and 0.836 W/m·℃ at 300℃, respectively.