| Customized: | Customized |
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| Standard: | JIS, AISI, API, TUV |
| Type: | Twist Drill Bit |
| Samples: |
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| Customization: |
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| Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier | HRC 45 | HRC 55 | HRC 60 | HRC 65 |
| YG10X | YL10.2&WF25 | Germany K44&K40 | Sandvik H10F |
| Grain size 0.7 μm,Co10%,Flexural strength 3320N/mm² | Grain size 0.6 μm,Co10%,Flexural strength 4000N/mm² | Grain size 0.5 μm,Co12%,Flexural strength 4300N/mm² | Grain size 0.5 μm,Co10%,Flexural strength 3320N/mm² |
| Coating | Hardness HV |
Thickness μm |
Friction Coefficient |
Oxidation Temp |
Color |
| AlTiN | 3500 | 2.5-3 | 0.3 | 900 | Black |
| TiAlN | 2800 | 2.5-3 | 0.3 | 900 | Violet |
| TiSiN | 3600 | 3 | 0.45 | 1000 | Bronze |
| AlTiSiN | 4000 | 3 | 0.4 | 1200 | Blue |
| TiN | 2500 | 2-3 | 0.5 | 600 | Gold |
| D1 | D2 | L1 | L2 | L3 | L4 | Coolant | |
| 4.00 | 6 | 74 | 36 | 29 | 36 | With/Without Inner Coolant | |
| 4.50-6.00 | 6 | 82 | 44 | 35 | 36 | With/Without Inner Coolant | |
| 6.50-8.00 | 8 | 91 | 53 | 43 | 36 | With/Without Inner Coolant | |
| 8.50-10.00 | 10 | 103 | 61 | 49 | 40 | With/Without Inner Coolant | |
| 10.50-12.00 | 12 | 118 | 71 | 56 | 45 | With/Without Inner Coolant | |
| 12.50-14.00 | 14 | 124 | 77 | 60 | 45 | With/Without Inner Coolant | |
| 14.50-16.00 | 16 | 133 | 83 | 63 | 48 | With/Without Inner Coolant | |
| 16.50-18.00 | 18 | 143 | 93 | 71 | 48 | With/Without Inner Coolant | |
| 18.50-20.00 | 20 | 153 | 101 | 77 | 50 | With/Without Inner Coolant | |
Suppliers with verified business licenses
Audited Supplier 
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