The ingot with 120mm diameter of Ti-25V-15Cr-5Mo-0.25Si-0.08C alloy which is a new type burn resistant titanium alloy with lower cost was produced by vacuum arc remelting in this study. This ingot was forged into bars with 25mm diameter by sheathed extrusion. The microstructures of the ingot and extrusion bars of TF-X alloy were studied. The tensile, thermal stability and creep properties of extrusion bars of TF-X alloy were tested under different conditions. The results show that microstructures of TF-X alloy, which has better ductility in tensile test, were roughly the same as TF550 alloy. In addition, TF-X alloy has higher strength and worse thermal stability than TF550 alloy, and its creep property better than Ti40 alloy was equivalent to TF550 alloy.