Carbide cutting material for finishing and roughing work when milling and boring with very good edge strength and very high toughness of the material cut under very difficult cutting conditions. This cutting material is especially well-suited for high cutting rates with high speed machining.

Areas of application:

• Titanium alloys
• Heat-resistant alloys
• Stainless steels
• Hardened steels
• Grey cast iron
• Fibreglass reinforced plastics

The high bending strength with the simultaneous high hardness of this type of carbide is based on a very uniform ultrafine tungsten carbide grain structure with 12 % cobalt. The use of a special ultrafine grain tungsten carbide and the specially adapted sinter-hip process lends this carbide its outstanding performance characteristics.

Grade		K20F
ISO-Classification		K40-K50
Diameter	[mm]	1.2 - 42.2
Co	[%]	12.0
WC+Cr3C2+VC	[%]	88.0
Spec. weight	[g/cm³]	14.05 ± 0.15
HC	[kA/m]	25.3 ± 2.8
4πσ	[μTm³/kg]	19.0 ± 1.9
HV30	[kg/mm²]	1680 ± 40
KIC	[MNmm-3/2]	10.0
Bending strenght (TRS)	[N/mm²]	> 4000
Porosity	A	≤ 02
	B	00
	C	00
WC grain size - Ø	[μm]	0.5
Binding phase		Uniform Distribution
Mixed Carbide		-
Eta-Phase		-
Applications		Drilling and Milling applications, e.g. for titanium alloys, heat-resistant alloys, stainless steels, hardened steels, grey cast iron, fiberglass reinforced plastics, composite materials. For machine taps.
Dimensions		Cf. main catalog.
© Konrad Friedrichs GmbH & Co. KG