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Milling tools monoblock \ Technical introduction – monobloc milling
milling tool cutting materials
the cutting materials are those which form the cutting part of a metal cutting tool. cutting materials significantly influence the profitability and process reliability
of machining processes. there will be a cutting material particularly suited to nearly every application. the following breakdown shows the most common cutting
materials for milling, depending on the application:
VHM
HM
HSSE-
PM
HSSE
Co8
HSSE
Co5
HSSE
HSS
① hardness/wear resistance/cutting speed
1 ② toughness/breaking strength
2
SC – solid carbide
VHM solid carbides are sintered materials and these are usually manufactured from 88–94 % tungsten carbide (WC) and 6–12 % cobalt. carbides are
less tough than high-speed steels (HSS/E)
cutting material for applications up to 70 HRC
high wear resistance, heat resistance and hardness
excellent temperature resistance, thus higher cutting speeds
HM – cemented carbide tipped
HM cutting plates are made of cemented carbide on a basic body made of high speed steel. this combines the bending strength of HSS with wear
resistance of solid carbide.
higher elasticity like solid carbide
high cutting speed
for wear properties, see solid carbide
HSSE PM – powder metal
HSSE- these are sintered high-speed steels. they combine the advantages of HSSE and solid carbide. increased fracture and fatigue strength through
PM evenly distributed carbides, no metallurgical defects. the hardness of PM lies between 64 and 67 HRC.
problem solver for e. g. vibration
medium to high cutting speeds are possible
high elasticity and cutting speed
HSSE/CO5/CO8 - high-speed steel cobalt content approx. 5 % or 8 %
HSSE high-speed steel with a cobalt content of approx. 5–8 %. HSSE allows higher processing temperatures than HSS, increased cutting speeds are
Co5 possible. the hardness of HSS-E is between 64–66 HRC (CO5) and 65–67 HRC (CO8).
very high elasticity
low to medium cutting speeds
rising heat and wear resistance with increasing cobalt content
HSS – high-speed steel
HSS high-speed steel excels through being widely available and versatile in application. compared to cemented carbide, HSS has a lower hardness
(62–64 HRC), but higher bending strength.
lower cutting speed compared to cemented carbide
lower wear resistance compared to cemented carbide
lower hot and bending strength
cooling required
Source: Hahn+Kolb Werkzeuge GmbH
Technical data subject to change. www.iconridge.com
Availability subject to country specific rules and regulations. 173
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