Small Hole Boring • Insert Selection Guide

The WIDIA™ three-step insert selection system makes choosing and 1 Select the Insert Geometry: applying the most productive tool easy. Tool recommendations are Based on the needed depth of cut and feed rate, based on six workpiece material groups. choose the geometry that best matches your needs.

2 Select the Grade: Determine your cutting conditions, and choose the proper grade.

TN7–CM1 for Steel

P

ISO 513 01 10 20 30 40

TN7 — High edge strength and wear-resistant cermet. Finishing to semi-fi nishing of carbon, alloy, and stainless steels at medium to high speeds. ALO — Can withstand light interruptions. Alumina coating enables TN7 higher cutting speeds.

ALOCG6 — High-speed, general-purpose grade for all kinds of steel and cast iron.
CG6CG55 — High edge strength and wear resistance. Reduces problems with
built-up edge. Superior thermal deformation resistance and
depth-of-cut notch resistance.
CG55
CG5CG5 — Best at low speeds. Will handle interruptions and high feed rates.
CM1CM1 — For heavy turning and heavily interrupted cuts.

Hard Metal Coated

ALO–CM1 for Stainless Steel

M

ISO 513 01 10 20 30 40

ALO

C3 and C25

C2

CG6

CG55

CG5

CM1

ALO — Can withstand light interruptions. Alumina coating enables higher cutting speeds. C3 and C25—Good wear resistance with some toughness. C2 — Excellent abrasion resistance for machining cast irons, austenitic stainless steels,non-ferrous metals, non-metals, and most high-temperature alloys. CG6 — High-speed, general-purpose grade for all kinds of steel and cast iron. CG55 — High edge strength and wear resistance. Reduces problems with built-up edge.Superior thermal deformation resistance and depth-of-cut notch resistance. CG5 — Best at low speeds. Will handle interruptions and high feed rates. CM1 — For heavy turning and heavily interrupted cuts.

Hard Metal Coated