Cobalt Steel Step Drills – 2.3 mm A-8023

Description

Drills are solid cobalt steel and outlast high speed steel (HSS) bits 15 to 1.

Speed Recommendations:

Drilling speeds should be between 500 and 10,000 rpm. All drilling should be done with a lubricant. The harder the material (metal) to be drilled and the larger the hole size, the slower the drill speed.

Material 1mm (1/16) Drill 2.35mm (3/32) Drill

Aluminum 7,000-8,000 5,000-6,000

Mild Steel 3,000-3500 2,000-3,000

Stainless Steel 1,000-2,000 500-1,000

Brass, Silver, Copper 5,500-6,500 4,000-5,010