Page 406 - Master Catalog 2017, Inch

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.
wear resistance = harder CG55 — High edge strength and wear resistance. Reduces problems with toughness = softer
ALO CG6 — High-speed, general-purpose grade for all kinds of steel and cast iron.

CG6
built-up edge. Superior thermal deformation resistance and
CG55 depth-of-cut notch resistance.

CG5 CG5 — Best at low speeds. Will handle interruptions and high feed rates.

CM1 CM1 — For heavy turning and heavily interrupted cuts.

Hard
Metal
Coated

ALO–CM1 for Stainless Steel

M
ISO 513 01 10 20 30 40

ALO
ALO — Can withstand light interruptions. Alumina coating enables
higher cutting speeds.
C3 and C25 C3 and C25 — Good wear resistance with some toughness.
wear resistance = harder CG6 — High-speed, general-purpose grade for all kinds of steel and cast iron. toughness = softer
C2 C2 — Excellent abrasion resistance for machining cast irons,
austenitic stainless steels, non-ferrous metals, non-metals,
CG6 and most high-temperature alloys.

CG55 CG55 — High edge strength and wear resistance. Reduces problems with
built-up edge. Superior thermal deformation resistance and
CG5 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.
CM1

Hard
Metal
Coated

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