Safety measures
Zirconium and hafnium metallurgy

Please refer to supplier data and to [M 580]. Powders, fine chips and sawdust or grinding residues present significant ignition and explosion risks. . Ignition with very low energy input (shock, spark, etc.) in air or oxygen is a direct function of the size and particle size distribution of the powder and its specific surface area: for example, powder with a diameter of 10 µm (or more generally < 100 µm) ignites very easily and can explode spontaneously if dispersed in air. Dry, coarse powder (0.1 to 1.5 mm in diameter), sponge fines and fine...