WIDIA ™ Inserts
Grades and Grade Descriptions
Coatings provide high-speed
capability and are engineered
for fi nishing to heavy roughing.
P Steel
M Stainless Steel
K Cast Iron
N Non-Ferrous
S High-Temp Alloys
H Hardened Materials
wear
resistance
Coating
Grade Description
Uncoated carbide. Extraordinarily good balance of hardness, wear resistance,
edge stability, and toughness. Light and medium machining. For cast iron,
all non-ferrous metals, and non-metals. Useful in unfavourable conditions.
toughness
05 10 15 20 25 30 35 40 45
K
N
S
HW-K15
H
P
M
Uncoated carbide. Medium machining. For steel.
HW-P25
P
Uncoated carbide. Light and medium machining. For steel.
To be used at low cutting speeds. Effective in unfavourable conditions.
HW-P35
P
M
Cermet. Light machining. Extremely good wear resistance at higher cutting speeds.
For steels and nodular cast iron. Recommended for high cutting speeds under
favourable conditions.
K
B28
widia.com
HT-P15