Page 412 - Master Catalog 2017, Inch

Grades and Grade Descriptions
Small Hole Boring Inserts

P Steel
Coatings provide high-speed
M Stainless Steel
capability and are engineered
K Cast Iron

for finishing to light roughing. N Non-Ferrous
S High-Temp Alloys
H Hardened Materials
wear toughness
resistance

Coating Grade Description 05 10 15 20 25 30 35 40 45
P
M
Uncoated carbide. A very tough, ultra-fi ne grain unalloyed substrate. For
general-purpose machining of most steels, stainless steels, high-temperature alloys, K
CM1 titanium, irons, and non-ferrous materials. Performs best at low speeds and will
handle interruptions and high feed rates. Use when C2, C3, or C25 fail due N
to chipping or breaking.
S
HW-S25

M
Uncoated carbide. A hard, low binder content, unalloyed WC/Co fi ne-grained grade.
C2 General-purpose grade for non-ferrous materials. Has excellent abrasion resistance K
for machining cast irons, austenitic stainless steels, non-ferrous metals, non-metals,
and most high-temperature alloys. N
S
HW-N15

M
Uncoated carbide. Has excellent abrasion resistance for machining cast
Grade C3 and C25 irons, aluminum, and non-ferrous metals. Good wear resistance with some K
toughness. Harder than C2, resulting in greater edge wear resistance. Suitable
N
for fi nishing operations.
S
HW-K15
P
A highly wear-resistant (TiC/TiN-based) cermet grade. High edge strength and
wear-resistant cermet offers improved tool life over uncoated/coated carbides K
TN7 and resists material build-up on cutting edge. Finishing to semi-fi nishing of carbon,
alloy, and stainless steels at medium to high speeds. Can also be used
on non-ferrous materials.
HT-P15
P
M
Coated carbide. CVD — TiCN-TiC-Al O . A thin alumina coating over a hard,
2 3
ALO deformation-resistant substrate. High-speed fi nishing of gray cast irons and K
medium-speed fi nishing of alloy steels that are in a hardness range of 35–50 HRC.
Can withstand light interruptions. Alumina coating enables higher cutting speeds.
HC-K15

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