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| Material Number | 6969919 |
| ISO Catalog ID | LNGQ120612ERGEKT4 |
| ANSI Catalog ID | LNGQ120612ERGEKT4 |
| Grade | KCK20B |
| [LI] Insert Length | 13 mm |
| [LI] Insert Length | .5118 in |
| [S] Insert Thickness | 6.35 mm |
| [S] Insert Thickness | .25 in |
| [W] Insert Width | 13.264 mm |
| [W] Insert Width | .5222 in |
| [Rε] Corner Radius | 1.191 mm |
| [Rε] Corner Radius | .0469 in |
| Cutting Edges per Insert | 4 |
Grades
KCK20B
Composition: A multilayered coating with thick MTCVD TiCN-Al2O3-TiOCN layers applied over a carbide substrate specifically engineered for cast irons.
Application: Delivers consistent performance in high-speed machining of grey and ductile irons. The substrate design permits the insert to stay in the cut for a long time at high speeds with minimum deformation. The thick CVD coating and post-coat treatment provide superior wear resistance ensuring long and consistent tool life. Can be applied both in straight and lightly interrupted cuts.
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| Mill 4-12KT™ • Insert Selection Guide | ||||||
| Material Group | Light | General | Heavy | |||
| – | (Light geometry) | – | (Strong geometry) | |||
| – | wear |  | toughness | |||
| – | Geometry | Grade | Geometry | Grade | Geometry | Grade |
| P1-P2 | .E..GE | KC522M | .E..PU | KCPM40 | .E..HD | KCPM40 |
| P3-P4 | .E..GE | KC522M | .E..PU | KCPM40 | .E..HD | KCPM40 |
| P5-P6 | .E..GE | KC522M | .E..PU | KC725M | .E..HD | KCPK30 |
| M1-M2 | .E..GE | KC522M | .E..PU | KCSM40 | .E..HD | KCPM40 |
| M3 | .E..GE | KC522M | .E..GE | KCSM40 | .E..HD | KCPM40 |
| K1-K2 | .E..GE | KCK15 | .E..PU | KCK20B | .E..HD | KCK15 |
| K3 | .E..GE | KCK20B | .E..PU | KCK20B | .E..HD | KCK20B |
| N1-N2 | – | – | – | – | – | – |
| N3 | – | – | – | – | – | – |
| S1-S2 | .E..GE | KC522M | .E..PU | KCSM40 | – | – |
| S3 | .E..GE | KC522M | .E..GE | KCSM40 | – | – |
| S4 | .E..GE | KC522M | .E..GE | KCSM40 | – | – |
| H1 | – | – | – | – | – | – |
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