Page 39 - Tungaloy Catalog

Ultra fine Grain Cemented Carbides

Micro-Alloy
1

General
cemented Micro-Alloy grain
carbide cemented carbide
Hardness Grades

Transverse rupture strength

Microstructure of EM10 Microstructure of F Mechanical properties of ultra-
1 µm 1 µm fine grain cemented carbide
Micro-Alloy is characterized by the WC hard phase (major within the application range of high speed tool steel. This is
component) which is extremely fine (average particle size 1 μm or appropriate for cutting tools when the workpiece is too small to
less) when compared with normal cemented carbide alloys. This achieve the desired cutting speed or for a small diameter endmill
ensures higher strength (toughness) than general carbide alloys or drill.
of the same hardness. This alloy demonstrates high performance

Transverse Modulus of Thermal Thermal
Specific Hardness rupture Compression expansion
Grades strength elasticity conductivity Features
gravity (HRA) strength (GPa) coefficient (W//(m ·K))
(GPa) (GPa) (X10 /K)
-6
Tungaloy’s hardest Micro-Alloy delivers excellent
wear resistance and cutting edge toughness.
F 14.9 93.4 2.5 6.9 640 5.4 85 Suitable for low speed, small depths of cut and
low feed machining. Mainly used for small tools
such as on automatic turning centers.

Used for low speed, small to medium depths of
M 14.5 92.5 2.8 6.4 580 5.6 74 cut machining with low to medium feeds.
Tougher than F Grade.

Used for solid endmills and other milling cutters.
EM10 14.0 91.5 3.4 6.4 550 5.7 70 Provides superior chipping resistance with its
micro grain.

Toughest Micro-Alloy grade.
UM 13.9 90.9 3.5 5.8 520 5.8 67 Excellent impact resistance.
Can withstand light impacts. Used for milling.

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