Carbide cutting material for finish turning and milling as well as the boring of the finest holes with very high wear resistance and edge strength as well as good toughness.

Areas of application:

• Grey cast iron, chilled cast iron
• Hardened steel, age hardening aluminium alloys
• Plastics with fillers
• Fibreglass reinforced plastic
• Brake shoe lining

The high wear resistance and edge strength are based on the presence of fine grain tungsten carbide (approx. 0,7 µm average grain size). The toughness and bending strength are improved through an increased cobalt content, through a very regular grain structure and through high temperature isostatic pressing. This type of carbide covers a wide range of applications of the K types.

Grade		K20F
ISO-Classification		K10
Diameter	[mm]	1.2 - 40.2
Co	[%]	8.0
WC+Cr3C2+VC	[%]	92.0
Spec. weight	[g/cm³]	14.6 ± 0.15
HC	[kA/m]	22.0 ± 2.2
4πσ	[μTm³/kg]	14.0 ± 2.0
HV30	[kg/mm²]	1710 ± 40
KIC	[MNmm-3/2]	9.0
Bending strenght (TRS)	[N/mm²]	3200
Porosity	A	≤ 02
	B	00
	C	00
WC grain size - Ø	[μm]	0.7
Binding phase		Uniform Distribution
Mixed Carbide		-
Eta-Phase		-
Applications		Grey cast iron, chilled cast iron, hardened steel, age hardening aluminium alloys, plastic with fillers, fiberglass reinforced plastics, brake shoe lining.
Dimensions		Cf. main catalog.
© Konrad Friedrichs GmbH & Co. KG