Commercial W70Cu30 alloy was hot-rolled by multi-pass hot-rolling at different temperatures. The properties of the W70Cu30 sheet were analyzed. The results indicate that W-Cu alloy sheets with 0.2 mm in thickness and relative density of 99.92% can be prepared successfully by the newly technique at 700 ℃. In hot-rolling process

deformation and sliding in both copper and tungsten phases occur as a result of rolling stress

which makes copper phase fill in closely surrounded by tungsten particles to form network-like distribution structure

increasing electrical and thermal conductivity by 23% and 31.31% after hot-rolling

respectively. Induced density and deformation strength also enhance micro-hardness of W70Cu30 alloy sheets. The sheets after hot-rolling consist of two phases-W and Cu. In addition

the fracture mode of the sheet after hot-rolling is characterized by ductile fracture of copper binding phase and trans-granular fracture of tungsten phase.