Tools of processing building materials
Widely used as drilling bits for drilling brick, stone, concrete, ceramic and the like.
| Grade | Co.content （%） |
Hardness （HRA） |
Density (g/cm3) |
Bending strength （N/mm2） |
Grain size | Application |
| YG6AX | 6.2 | 93.3 | 14.80 | 2600 | Fine coarse | Glass cutter, ceramic knife. |
| DD05A | 6 | 90.5 | 14.92 | 2800 | Medium grain | Percussion bit with outer diameter less than 10mm. |
| YG7A | 7 | 91.0 | 14.85 | 2800 | Medium grain | Electric hammer drill. |
| DD20A | 8.5 | 90.2 | 14.68 | 2700 | Medium grain | Its properties are between DD05A and DD10A, and it can be used universally. |
| DD10A | 7.5 | 88.5 | 14.78 | 2800 | Coarse grain | Percussion bit with outside diameter more than 10mm. |
Except mentioned above, Hongfeng also provide other carbide according to customer’s demand.
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