1 an open structure that gives shape and support to something, such as the transverse stiffening ribs of a ship's hull or an aircraft's fuselage or the skeletal beams and uprights of a building. 2 an enclosing case or border into which something is fitted.
Metal; Ferrous Metal; Austenitic; Cast Iron. Material Notes: Type CRS is an austenitic material with graphite in the nodular form. It conforms to ASTM designation A439-60T and provides much higher strength than type CR with excellent resistance to corrosion, wear and heat.
HSS Alloys. The HSS classification refers to several different alloy steels used in HSS drill bits. Chrome-vanadium steel, for example, tempers harder than plain high-carbon steel and lasts longer at high drilling speeds.Adding other elements customizes HSS steel to specific industrial needs.he HSS classification refers to several different alloy steels used in HSS drill bits. Chrome-vanadium steel, for example, tempers harder than plain high-carbon steel and lasts longer at high drilling speeds. Adding other elements customizes HSS steel to specific industrial needs.