Insert cross-reference · 80° Diamond · 0° clearance · 12mm IC · 0.8mm Rε
CNMG120408 Cross Reference
Equivalent CNMG120408 inserts across 7 brands — Sandvik, ISCAR, Kennametal, Walter, Tungaloy, Seco, Mitsubishi. Same ISO 1832 geometry class; grades, coatings and application windows differ by manufacturer. Treat equivalents as starting points and verify on a sample part: a cross-reference matches the geometry, not the process.
A general-purpose nose radius: a balance of edge strength and finish that suits most first-choice turning before you tune up for finishing or down for roughing.
| Brand | Designation / grade | Coating | Application |
|---|---|---|---|
| Sandvik | CNMG 12 04 08-PM 4325 | Inveio® CVD Al₂O₃ | P20–P30 |
| ISCAR | CNMG120408 IC8250 | SUMO TEC® CVD Al₂O₃ | P20–P30 |
| Kennametal | CNMG120408 KCP25B | KENGold™ CVD | P20–P30 |
| Walter | CNMG120408 WPP20S | Tiger·tec® Silver CVD | P20–P30 |
| Tungaloy | CNMG120408 T9125 | CVD TiCN/Al₂O₃ | P20–P30 |
| Seco | CNMG120408 TP2500 | Duratomic® CVD | P20–P30 |
| Mitsubishi | CNMG120408 MC6025 | CVD Al₂O₃ | P20–P30 |
Grades used Sandvik GC4325 · ISCAR IC8250 · Kennametal KCP25B · Walter WPP20S · Tungaloy T9125 · Seco TP2500 · Mitsubishi MC6025
23 brands list CNMG120408 in their published standard programs, with 3,885 catalog variants across chipbreakers, grades and coatings. Variant count shows how deep each maker's standard range goes for this geometry. It is not a quality ranking.
| Brand | Catalog variants |
|---|---|
| Sumitomo | 670 |
| Kyocera | 474 |
| Kennametal | 374 |
| Mitsubishi Materials | 337 |
| Sandvik-Coromant | 263 |
| Tungaloy | 216 |
| Ingersoll | 215 |
| Widia | 203 |
| Walter | 200 |
| SECO Tools | 180 |
| Korloy | 154 |
| Hoffmann Group | 138 |
| Iscar | 115 |
| ZCC Cutting Tools | 88 |
| Ceratizit | 83 |
| Boehlerit | 74 |
| WNT | 38 |
| Hahn+Kolb | 26 |
| Ceramtec | 22 |
| Misumi | 7 |
| NTK Cutting Tools | 4 |
| MOLDINO Tool Engineering | 3 |
| Nikken | 1 |
Hoffmann Group and Hahn+Kolb are distributor private-label programs (GARANT, ATORN). Counts are catalog listings, not stock levels. Availability varies by region and distributor.
- C — shape
- 80° rhombic (diamond)
- N — clearance angle
- relief angle 0° (negative insert, double-sided use possible)
- M — tolerance
- class M — molded, medium tolerance on inscribed circle and corner point (typically ±0.05–0.13 mm depending on size)
- G — type
- cylindrical fixing hole, chipbreaker on both faces (double-sided insert)
- 12 — cutting edge length / IC
- 12 mm nominal (inscribed circle / edge length class)
- 04 — thickness
- insert thickness 4.76 mm
- 08 — corner radius
- Rε = 0.8 mm nose radius
Type any maker's grade (e.g. GC4325, AC820P, T9215) to see grades other brands publish at the same ISO application position. VERIFIED = multi-source consensus; 2+ CHARTS = placement independently confirmed by two or more manufacturer charts; SINGLE-SOURCE = one chart only. Comparable at ISO position — not identical performance. Verify on a sample part.
Related designations