HRA 90.3 Tungsten Carbide Button Bits for Road Breaking Button bits
Conical button bits:
Diameter: 16.07mm
d: 80.0mm
H: 15.08 mm
h1: 30
h2: 18
α: 92
Grade Details:
Density 15.0
Hardness HRA 90.3
T.R.S 2800
Grain size Medium
ISO Grade K20
Road Breaking Carbide Button Bits

| TYPE | 尺 寸 Dimension (mm) | |||||
| D | d | H | h1 | h 2 | o:. | |
| WLCB1615 | 16.07 | 80 | 15.08 | 3.00 | 18 | 92 |
| WLCB1918 | 18.75 | 95 | 17.76 | 3.75 | 15 | 82 |
| WLCB1817 | 17.86 | 9.6 | 17.16 | 3.84 | 1.6 | 82 |
General Tungsten Carbide Button Bits:
| Carbide Grade | Density g/cm3 |
T.R.S MPa |
Hardness HRA |
Recommended Performance & application |
| TGC1 | 15.1 | 1800 | 90 | Mainly used as small buttons for percussion bits to cut soft and medium-hard formations. |
| TGC2 | 14.95 | 1900 | 90.5 | For coring crowns, electric coal drill bits, coal cutting picks, oil cone bits, and scraping knife bits, are used in geological prospecting, coal mining, and oil well boring. |
| TGC3 | 14.8 | 2200 | 89.5 | For coring crowns, electric coal drill bits, coal cutting picks, oil cone bits, and scraping knife bits, are used in geological prospecting, coal mining, and oil well boring. |
| TGC4 | 14.95 | 2500 | 90.5 | Mostly used as the buttons of small and medium-sized percussion bits and as the inserts of rotary prospecting bits to cut soft and medium-hard formations. |
| TGC5 | 14.6 | 2450 | 87.6 | Suitable to strips, conical buttons for rotary percussion-resistant, geological prospection buttons, cut soft and medium-hard formations. |
| TGC6 | 14.4 | 2500 | 86.8 | Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard and hard formations. |
| TGC7 | 14.4 | 2550 | 87.2 | Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard and very hard formations. |
| TGC8 | 14.4 | 2700 | 86.5 | Largely for the inserts and buttons of percussion bits and tri-cone bits to cut medium-hard, hard, and very hard formations. |
| TGC9 | 14.2 | 2850 | 86 | Primarily for the buttons of tritone bits and inserts of rotary percussion bits to cut hard and very hard formations. |
| TGC10 | 14 | 3000 | 85.5 | For oil cone drill bits, for medium-soft and medium-hard rocks. |
Advantages:
Our carbide button bits range:

