PVD COATING
PVD COATING FOR PCBN INSERT
The coating on PCBN cutting tools is becoming more widespread. Some coatings exhibit greater chemical stability than PCBNs themselves. This enhanced chemical stability can lead to performance improvements when machining hardened steels.
The coating has the effect of delaying crater wear. EHWA Diamond provides high-quality coated inserts for optimized machining.
EHWA PVD COATING
COATING GRADE
COLOR
HARDNESS
TEMPERATURE
FEATURES
TN
TA
AC
AC2
TNP
H1
GOLD
PURPLE / GRAY
SILVER GRAY
LIGHT GRAY
DARK GRAY
COPPER
2,300
2,300
3,200
3,700
3,600
3,600
600
900
1,100
1,100
1,000
1,200
Mono layer
Traditionally used for wear part
Easily identifiable used insert edges
Good heat resistance Good wear resistance
Traditionally used for cutting tool
Better heat resistance
Higher hot hardness
Higher oxidation resistance
Excellent heat resistance
Higher hot hardness
Higher oxidation resistance
Excellent wear resistance
Excellent heat resistance
Very good surface finish
Best performer for hardened steel & bearing steel
Excellent wear resistance
Excellent heat resistance
High oxidation resistance
Suitable for abrasive applications
APPLICATION AREA
EHWA
COATING
CAST IRON
HARDENED STEEL
(HRc 45~ )
POWDER METAL
(HRc 45~ )
BEARING STEEL
TN
TA
AC
AC2
TNP
H1
TIN
TiALN
AlCrN
AlCrN+
AlTiN+
TiSi+