HIGH SPEED STEEL AND SOLID CARBIDE FOR TAPS
Structure (500x)
Vergnano Designation
Designation according to ISO 11054
Hardness
Toughness
Applications
Used exclusively for hand taps (except A100).
HSS
HSS
•
•
HSSE
HSS-E
For general applications.
•
••
Used in applications where a compromise between high hardness and high toughness is needed. For applications where extremely high performance and productivity are requested.
HSSK
HSS-E-PM
••
•••
HSSZ
HSS-E-PM
••
•••
For tough materials and extreme applications.
HSSP
HSS-E-PM
•••
••
For heat-treated steels and abrasive materials.
HM
-
-
•••
COATINGS AND SURFACE TREATMENTS - PROPERTIES
Type of coating / treatment
Oxidation Temperature
Friction Coefficient
Structure
Hardness
Features
TiN
Mono-layer
Wear resistance
l l
l l
l
TiCN
Mono-layer
Wear resistance
l l
l l
l
TiX2
Multi-layer
Oxidation and wear resistance, chip evacuation
l l l
l l l
l l
TiH1
Multi-layer
Oxidation and wear resistance, chip evacuation
l l l
l l l
l l
G-MAXX
Multi-layer
Oxidation and wear resistance, chip evacuation
l l l
l l l
l l
CrN
Mono-layer
Wear resistance, chip evacuation
l
l l
l l
V-MAXX
Mono-layer
Wear resistance, chip evacuation
l l l
l l
l l l
RED- MAXX
Mono-layer
Wear resistance, chip evacuation
l l l
l l
l l l
Surface oxidation
VAP
-
Chip evacuation
l l
l
Surface hardening
NiTR
Wear resistance
l
l
l
Excellent Very good
l l l
l l
Good
l
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