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New High Tech Grade
The new high tech grade K88UF closes the gap between our premium grades K55SF and K44UF.
K88UF displays a hardness HV 30 of around 1800 at an adequate toughness, using 0.5 μm sub-micron size WC-powder in combination with a Cobalt content of 10 wt %.
Thus K88UF is specially designed for high speed milling applications in hard and difficult materials.
Material Description
| Grade |
K88UF |
| ISO-Classification |
K10-K20 |
| Diameter |
[mm] |
1.2 - 42.2 |
| Co |
[%] |
10.0 |
| WC+Cr3C2+VC |
[%] |
90.0 |
| Spec. weight |
[g/cm³] |
14.4 |
| HC |
[kA/m] |
26.0 |
| 4ÀÃ |
[¼Tm³/kg] |
9.8 |
| HV30 |
[kg/mm²] |
1780 |
| KIC |
[MNmm-3/2] |
9.3 |
| 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 applications, e.g. for composite materials, for PCB-drills Ø 0,1 mm to Ø 0,5 mm, standard filing chamber. |
| Dimensions |
Ø 1.5+0.1 mm x 365+5.0 mm
Ø 3.25+0.1 mm x 395+5.0 mm |
| © Konrad Friedrichs GmbH & Co. KG |
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