hava çeliği, yüksek hız çeliği

listen to the pronunciation of hava çeliği, yüksek hız çeliği
Türkisch - Englisch
(Mühendislik) high speed steel
Abbreviated HSS. A kind of tool steel, invented in the early 20th century, which retains its hardness and temper at high temperatures (at which previous kinds of tool steel would soften), thus allowing cutters made from it to be employed at higher cutting speeds than were previously practical