NORSEMAN 29960 1-3/8" Drill Bit Mag Super Premium

Description

Type 130-AG
1/2" Reduced Shank Magnum Super Premium
3-Flats on Shank Heavy-Duty, 118 ° Split Point
• Special Hi-Molybdenum tool steel.
• One piece solid construction.
• Sizes greater than 1", 118º split point.
• Recommended for use in work hardening grades of
stainless steel and other hard metal drilling applications.
• Body and clearance are gold surface treated for maximumlubricity.

High Speed Steel

High speed steel (HSS) is a form of tool steel; high speed steel bits are hard, and much more resistant to heat than high carbon steel. They can be used to drill metal, hardwood, and most other materials at greater cutting speeds than carbon steel bits, and have largely replaced carbon steels.

Magnum Super Premium - Norseman™ Drill and Tool

HSS Magnum™ Super Premium Drill Bits - Norseman™ Drill and Tool a drill with its thin web will penetrate the work hardening stainless fast enough to continually cut beneath the chip which is hardening from deformation. This means the drill is cutting softer steel. The cobalt drill, with its thick web, cannot be fed at a fast enough rate to cut beneath the area which is hardening. As a result the cobalt drill is continually drilling into hardened steel.