Features of niobium targets manufactured by Achemetal1. high product density, good product compactness and uniform crystal grains;2. Higher machining property;3. Relative density of targets: over 99%, relative density of alloy: over 97%; grain size: less than 50um; thermal resistance of films: below 5%; welded rate with back plates: over 98%, film uniformity after target film formation: over 95%.4. Conventional density: ≥8.5 g/cm3;