Note 1 to entry: The wire is formed by pressing/compacting and/or other cross-sectional area-reduction process such as wire drawing and rolling, and a reaction heat treatment.

Note 2 to entry: A commonly used powder metallurgy process is the powder-in-tube (PIT) process in which the mixture of powders is in a tube.

Note 3 to entry: This entry was numbered 815-14-16 in IEC 60050-815:2015.