A niobium based alloy with high temperature erosion resistance includes 5-8 at% molybdenum (Mo), 2-4 at% tantalum (Ta), 4-6 at% titanium (Ti), 0-4 at% addition elements, and the remaining component is niobium (Nb). The addition elements are selected from at least one of hafnium (Hf), zirconium (Zr), tungsten (W), vanadium (V), chromium (Cr) and carbon (C). The niobium based alloy with high temperature erosion resistance has excellent room temperature hardness and wear resistance, as well as excellent high temperature erosion resistance. |