Grades and Grade Descriptions
Small Hole Boring Inserts
Coatings provide high-speed
capability and are engineered
for fi nishing to light roughing.
P Steel
M Stainless Steel
K Cast Iron
N Non-Ferrous
S High-Temp Alloys
H Hardened Materials
wear
resistance
Coating
toughness
05 10 15 20 25 30 35 40 45
Grade Description
P
M
Coated carbide. CVD — TiC-TiCN-TiN. Tri-phase coating on a hard, low binder
content, fi ne-grained grade. High-speed, general-purpose grade for all kinds of steel.
Gold in colour.
K
HC-P10
P
M
A PVD-TiN-coated grade. Straight 9.5% Co substrate. Submicron grain. For
general-purpose machining of most steels, stainless steels, high-temperature alloys,
titanium, irons, and non-ferrous materials. Performs best at low speeds
and will handle interruptions and high feed rates.
K
N
S
HC-S25
P
A PVD-TiN coating over a very wear-resistant, unalloyed carbide substrate. For
general-purpose machining of most steels, stainless steels, high-temperature alloys,
titanium, irons, and non-ferrous materials. Grade provides combination of high
edge strength and wear resistance. Coating increases wear resistance and reduces
problems with built-up edge. The substrate offers superior thermal deformation
resistance and depth-of-cut notch resistance.
M
K
S
HC-M20
PcBN tip brazed onto a carbide insert. Recommended for machining hardened steel
(45–65 HRC). Use on bearing steel, hot and cold work tool steels, high-speed steels,
die steels, case-hardened steels, carburised and nitrided irons, and some hard
coatings. Can be run both dry and wet.
BN-H25
H
Polycrystalline diamond (PCD) compact grade provides exceptional hardness and
abrasion resistance. CPD1 is a superior fi nish boring grade that will signifi cantly
improve workpiece tolerances, surface fi nishes, and insert tool life in high-silicon
aluminium, copper, aluminium carbon graphite, hard rubber, plastics, and/or wood.
N
widia.com
D39
DP-N10