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Carbide Hob Cutter
| Table of carbide hob coating types | |||||||
| No | coating material | hardness(HV) | Coefficient of friction for steel (dryness) | Internal stress(Gpa) | Maximum applicable temperature (Celsius) | The color of the coating | coating structure |
| 1 | TIN | 2300 | 0.4 | -2.5 | 600 | golden | monolayer |
| 2 | AlCrN | 3200 | 0.35 | -3 | 1100 | blue grey | monolayer |
| 3 | TiCN | 3000 | 0.4 | -4 | 400 | blue grey | multilayer |
| 4 | WC/C | 1000/2000 | 0.10-0.20 | -1 | 300 | Black gray | laminal |
| 5 | CrN | 1750 | 0.5 | 0.75 | 700 | silver gray | monolayer |
| 6 | polycrystalline diamond | 8000-10000 | 0.15-0.20 | 600 | LightGray | monolayer | |
| 7 | iAlN | 3300 | 0.30-0.35 | 0.866666667 | 900 | Purple-grey | Nano-structure |
GRADES OF CEMENTED CARBIDE RODS AND BARS
| ISO CORRESPONDING | WC% | Co% | Density g/cm3 | Hardness HRA | TRS N/mm2 | WC grain size |
| K10 | 94 | 6 | 14.90 | 92.5 | >=3000 | FINE GRAIN |
| K05-K10 | 94 | 6 | 14.85 | 93.0 | >=3500 | ULTRA-FINE GRAIN |
| K20-K30 | 92 | 8 | 14.65 | 92.6 | >=3600 | ULTRA-FINE GRAIN |
| K30-K40 | 90 | 10 | 14.45 | 92.0 | >=3800 | ULTRA-FINE GRAIN |
| K30-K40 | 90 | 10 | 14.40 | 91.5 | >=4000 | ULTRA-FINE GRAIN |
| K05-K10 | 94 | 6 | 14.70 | 93.5 | >=3500 | SUPER-FINE GRAIN
|
| K30-K40 | 90 | 10 | 14.35 | 92.5 | >=3800 | SUPER-FINE GRAIN
|
| K40 | 88 | 12 | 14.15 | 92.3 | >=4300 | SUPER-FINE GRAIN
|
The content of tungsten and cobalt is nominal value, the density and hardness are typical values, just for your information.