Insert cross-reference · 80° Diamond · 0° clearance · 12mm IC · 1.2mm Rε · heavy roughing
CNMG120412 Cross Reference / ANSI CNMG 433
Equivalent CNMG120412 inserts across 7 brands — Sandvik, ISCAR, Kennametal, Walter, Tungaloy, Seco, Mitsubishi. In US (inch, ANSI B212.4) catalogs this same insert is listed as CNMG 433 — identical geometry, different designation system. 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.
This is the roughing size of the family: the larger nose radius gives a stronger corner for heavier depths of cut and interrupted work, but raises radial force and the tendency to chatter on slender parts.
Brand equivalents — CNMG120412
| Brand | Designation / grade | Coating | Application |
|---|---|---|---|
| Sandvik | CNMG 12 04 12-PR 4335 | Inveio® CVD | P30–P40 |
| ISCAR | CNMG120412 IC8350 | SUMO TEC® CVD Al₂O₃ | P30–P40 |
| Kennametal | CNMG120412 KCP30B | KENGold™ CVD | P30–P40 |
| Walter | CNMG120412 WPP30S | Tiger·tec® Silver CVD | P30–P40 |
| Tungaloy | CNMG120412 T9235 | CVD TiCN/Al₂O₃ | P30–P40 |
| Seco | CNMG120412 TP3500 | Duratomic® CVD | P30–P40 |
| Mitsubishi | CNMG120412 MC6035 | CVD Al₂O₃ | P30–P40 |
Grades used Sandvik GC4335 · ISCAR IC8350 · Kennametal KCP30B · Walter WPP30S · Tungaloy T9235 · Seco TP3500 · Mitsubishi MC6035
22 brands list CNMG120412 in their published standard programs, with 2,815 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 | 545 |
| Mitsubishi Materials | 275 |
| Kennametal | 273 |
| Kyocera | 264 |
| Sandvik-Coromant | 215 |
| Widia | 166 |
| Walter | 157 |
| Tungaloy | 145 |
| Ingersoll | 136 |
| SECO Tools | 128 |
| Korloy | 101 |
| Hoffmann Group | 87 |
| Ceratizit | 72 |
| ZCC Cutting Tools | 67 |
| Iscar | 63 |
| Boehlerit | 56 |
| WNT | 28 |
| Ceramtec | 19 |
| Hahn+Kolb | 11 |
| Misumi | 4 |
| MOLDINO Tool Engineering | 2 |
| NTK Cutting Tools | 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.
ISO designation decoded — what CNMG120412 means
- 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
- 12 — corner radius
- Rε = 1.2 mm nose radius
Cross-reference a grade at its ISO position
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 confirmed by two or more manufacturer-published charts; SINGLE-SOURCE = one chart only. Comparable at ISO position — not identical performance. Verify on a sample part.
Frequently asked questions
What does CNMG120412 mean?
CNMG120412 is an ISO 1832 insert designation. It decodes as: 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; 12 — corner radius = Rε = 1.2 mm nose radius.
What is CNMG120412 used for?
CNMG120412 is a turning insert. The brand-equivalents table on this page lists each maker's grade and its ISO application window (the P, M, K and similar ranges). Match the geometry first, then choose the grade for your material and operation, and verify on a sample part.
What is the equivalent of CNMG120412 across brands?
CNMG120412 is a shared ISO 1832 geometry, so Sandvik, ISCAR, Kennametal, Walter and other makers each offer it in their own grades and coatings. A cross-reference matches the geometry, not the process, so treat equivalents as starting points and verify on a sample part.
Is CNMG120412 a negative or positive insert?
CNMG120412 has 0° clearance, so it is a negative, usually double-sided insert run in a negative holder: strong and economical for general turning and roughing.
Does this cross-reference favour specific brands?
No. Comparable grades appear here only because manufacturer-published comparison charts place them at the same ISO application position. No manufacturer pays for placement, nothing on this page is sponsored, and CuttingToolsAI sells no tools and earns no commission. Placements backed by a single chart are flagged as such, and every comparison ends the same way: verify on a sample part before switching.
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