B4C
Minimum Order: 0
Quality/Safety Certification: 0.00
Boron Carbide,B4C
Boron carbide, a black crystal powder, is one of the hardest Man-Made materials, its hardness with Mohs hardness 9.36 and microscopic hardness 5400-6300kg/mm2 is only near upon diamond, its density 2.52g/cm3 and melting point at 2450,The boron carbide possesses properties of endurance hi/low temperature, no reaction with either acids or alkalis, high grinding efficiency, no magnetism.
| Grit No | Basic Grain(µm) | Chemical Component | ||
| Total B | Total C | Content B4C | ||
| 60# | 250 | 77-80 | 17-21 | 96-98 |
| 70# | 212 | |||
| 80# | 180 | |||
| 90# | 150 | |||
| 100# | 150 | |||
| 120# | 106 | |||
| 150# | 90-75 | |||
| 180# | 75-63 | 76-79 | 95-97 | |
| 220# | 63-53 | |||
| F230 | 63-53 | |||
| F240 | 63-50 | |||
F280 | 50-40 | |||
| F320 | 40-28 | |||
| F360 | 28-20 | |||
| F400 | 20-14 | 75-78 | 94-95 | |
| F500 | 14-10 | |||
| F600 | 10-7 | |||
| F800 | 7-5 | 74-78 | 91-94 | |
| F1000 | 5-3.5 | |||
| F1200 | 3.5-2.5 | |||
| 60#~150# | 250-75 | 76-81 | 93-97 | |
| 46#~120# | 350-60 | |||
| -100mesh | lesss than 150 | |||
| -140mesh | less than 100 | |||
| -200mesh | less than 75 | |||
| -325mesh | less than 44 | |||
| -25µm | less than 25 | |||
| -10µm | less than 10 | |||
