Small Hole Boring • Insert Selection Guide
3
Select the Cutting Speed:
In the foldout speed and feed chart, establish your cutting speed
and obtain your optimal starting conditions and range.
P
M
K
N
S
H
Steel
Stainless Steel
Cast Iron
Non-Ferrous
High-Temp Alloys
Hardened Materials
TN7–CM1 for Cast Iron
K
10
20
30
40
TN7 TN7 — High edge strength and wear-resistant cermet.
ALO ALO — Can withstand light interruptions. Alumina coating enables
higher cutting speeds.
CG6
CG55
C3 and C25
C2
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.
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.
01
ISO 513
CG5 — Best at low speeds. Will handle interruptions and high feed rates.
CG5
CM1 — For heavy turning and heavily interrupted cuts.
CM1
Hard
Metal
Coated
C3–CM1 for High-Temperature Alloys
S
ISO 513
01
10
20
30
40
CM1
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.
CG5 — Best at low speeds. Will handle interruptions and high feed rates.
CM1 — For heavy turning and heavily interrupted cuts.
Hard
Metal
Coated
widia.com
D33
CG5
C2
C3 and C25