| cross-sectional area-reduction process in which a billet is mechanically pressed through an area-reducing die
Note 1 to entry: Extrusion can be of the following types:
- hydrostatic extrusion in which a liquid is used to press the billet through a die, and - hot extrusion in which a billet is pre-heated to an elevated temperature. Note 2 to entry: This entry was numbered 815-14-05 in IEC 60050-815:2015.
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