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WNMG-BTM – Tungsten Carbide Turning Inserts for Steel Machining
WNMG-BTM tungsten carbide turning inserts feature a sharp cutting-edge geometry with M-class tolerance and double-sided cutting design. The optimized chipbreaker provides excellent chip breaking and smooth chip evacuation, helping reduce chip accumulation and entanglement during machining. Multiple insert shapes, sizes and grades are available for mold steel, tempered steel and other machining applications in mold making and automotive industries.
1. Sharp cutting-edge geometry
2. M-class dimensional tolerance
3. Double-sided cutting design
4. Excellent chip-breaking performance
5. Smooth and stable chip evacuation
6. Reduced chip accumulation and entanglement
7. Multiple insert shapes and sizes available
8. Suitable for mold and tempered steel machining
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Specifications
| Item | Inch code | Dimension（mm） | |||
| ΦI.C | S | Φd | R | ||
| CNMG120404-BTM | CNMG431 | 12.7 | 4.76 | 5.16 | 0.4 |
| CNMG120408-BTM | CNMG432 | 12.7 | 4.76 | 5.16 | 0.8 |
| CNMG120412-BTM | CNMG433 | 12.7 | 4.76 | 5.16 | 1.2 |
| DNMG150404-BTM | DNMG331 | 12.7 | 4.76 | 5.16 | 0.4 |
| DNMG150408-BTM | DNMG332 | 12.7 | 4.76 | 5.16 | 0.8 |
| DNMG150412-BTM | DNMG333 | 12.7 | 4.76 | 5.16 | 1.2 |
| DNMG150604-BTM | DNMG431 | 12.7 | 6.35 | 5.16 | 0.4 |
| DNMG150608-BTM | DNMG432 | 12.7 | 6.35 | 5.16 | 0.8 |
| DNMG150612-BTM | DNMG433 | 12.7 | 6.35 | 5.16 | 1.2 |
| TNMG160404-BTM | TNMG331 | 9.525 | 4.76 | 3.81 | 0.4 |
| TNMG160408-BTM | TNMG332 | 9.525 | 4.76 | 3.81 | 0.8 |
| TNMG160412-BTM | TNMG333 | 9.525 | 4.76 | 3.81 | 1.2 |
| TNMG220404-BTM | TNMG431 | 12.7 | 4.76 | 5.16 | 0.4 |
| TNMG220408-BTM | TNMG432 | 12.7 | 4.76 | 5.16 | 0.8 |
| TNMG220412-BTM | TNMG433 | 12.7 | 4.76 | 5.16 | 1.2 |
| VNMG160404-BTM | VNMG431 | 9.525 | 4.76 | 3.81 | 0.4 |
| VNMG160408-BTM | VNMG432 | 9.525 | 4.76 | 3.81 | 0.8 |
| VNMG160412-BTM | VNMG433 | 9.525 | 4.76 | 3.81 | 1.2 |
| WNMG080404-BTM | WNMG431 | 12.7 | 4.76 | 5.16 | 0.4 |
| WNMG080408-BTM | WNMG432 | 12.7 | 4.76 | 5.16 | 0.8 |
| WNMG080412-BTM | WNMG433 | 12.7 | 4.76 | 5.16 | 1.2 |
The workpiece material and recommended parameters
| ISO | WorkpieceMaterial | Hardness（HRC） | Cutting Speed(m/min) | Feed(Fn) |
| M | Stainless steel | 30-45HRC | 80-160m/min | Less than 0.35(mm/rev) |
| H | Coper/Aluminum | Less than 25HRC | 200-260m/min | Less than 0.35(mm/rev) |
| P | Steel | Less than 40HRC | 180-240m/min | Less than 0.35(mm/rev) |
It can be used for various kinds of workpiece materials:
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