ISO Code | Grade | grain size | cobalt content | density: ≥ | hardness: ≥ | TRS(ISO3327):≥ | ||||||
K20-K30 | KU20 | 0.7um | 10% | 14.4 g/cm3 | 91.8(HRA) | 3800 N/mm3 | ||||||
Diameter: 24mm(+0.60mm-+0.30mm) Length: 330mm/305mm(0-5mm) or other length according customer require | ||||||||||||
Grade | Grain size (um) | Cobalt content (wt-%) | Density (g/cm3) | Hardness (HRA) | TRS (N/mm2) | KIC (MPa.m1/2) | ||||||
KU20 | 0.7 | 10 | 14.45 | 91.8 | 3800 | 10.5 | ||||||
KR10Z | 0.6 | 10 | 14.45 | 92.2 | 4000 | 10.7 | ||||||
KU25 | 0.4 | 12 | 14.12 | 92.5 | 4200 | 10.2 | ||||||
KU409 | 0.4 | 9 | 14.45 | 93.2 | 4000 | 9.6 | ||||||
KU10 | 0.4 | 6 | 14.8 | 94 | 3800 | 8.7 | ||||||
KU209 | 0.2 | 9 | 14.45 | 94 | 4200 | 9.2 | ||||||
KU30 | 0.7 | 15 | 13.98 | 89.6 | 4500 | 13.8 | ||||||
KU20: Sub-fine grain size, processing by medium speed , good general performance, drill bits and end mills are recommended, suitable for cutting Ordinary alloy steel, aluminum alloy, heat resistant alloy, cast iron, etc.. KR10Z: Ultra-fine grain size, excellent heat resistance, suitable for high-speed milling and drilling, especially suit for making overall drill bits. Suitable to process alloy steel, heat-resistant alloy, cast iron, non-ferrous metals, stainless steel and other materials. KU25: Ultra-fine grain size, with good wear resistant and toughness, especially suitable for finishing and processing alloy steel, aluminum alloy, titanium alloy etc. Suitable for making endmills and reamer KU409: Ultra-fine grain size, Suitable for processing hardened hard steel, aluminum alloy, CFRP, high wear resistant material stainless steel, composite graphite, PCB, plastic KU10: Ultra-fine grain size，with good wear resistant, higher wear resistant end mills， engraving tool and high mirror polished cutting tool are recommended, suitable for processing Aluminum-magnesium alloy, composite sheet, PCB, plastic, CFRP etc KU209: Nano grain size, with high wear resistance and toughness, suitable for finishing of hardened steel, high-precision and high-mirror processing of graphite, plastic, CFRP, stainless steel and aluminum alloy. Suitable for making 0.3-0.5mm drills KU30: Sub-fine grain size, with good wear resistant and toughness, suitable for making punching of mould、anti-vibration boring bar and machining low-hardness material with deep cutting tools. | ||||||||||||
