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Grade | ISO code | Cobalt content(wt-%) | Hardness(HRA) | Density(g/cm3) | TRS(ISO3327) | Grain size | Recommended Applications |
| JT106U | K05-K10 | 6% | 94.0 | 14.75 | 3700 | 0.4-0.5 | suitable for machining aluminum -magnesium alloys,glass fiber,carbon fiber,wood,harden plstic,etc. It is recommended for making PCB micro tools and drills of other materials |
| YG6X | K05-K10 | 6% | 92.5 | 14.92 | 3000 | 0.9-1.1 | suitable for machining chilled alloy cast irons, heat-resistant alloy steel,nonferrous metals,wood,paper,plastic and aluminum -magnesium,etc. It is recommended for making solid carbide drills,mining tools and reamers. |
| JT302A | K20-K30 | 10% | 91.8 | 14.45 | 3800 | 0.7-0.9 | suitable for machining aluminum -magnesium alloys,glass fiber,carbon fiber,wood,harden plstic,etc. It is recommended for making PCB micro tools and drills of other materials |
| JT401 | K30-K40 | 12% | 92.0 | 14.15 | 3800 | 0.5-0.7 | suitable for machining nickel steel,based alloys, titaniumalloys, stainless steel, mould steel, chilled hardened steel and grey cast irons, etc.It is recommended for making milling tools and reamers. Suitable for high speed machining. |
| YG15 | K30-K40 | 15% | 87.6 | 14.00 | 4000 | 1.2-1.4 | Suitable for making solid dies and moulds and tools for punching operations. |
tungsten carbide rods