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| Material Number | 6525560 |
| ISO Catalog ID | LNGQ120604ERGEKT4 |
| ANSI Catalog ID | LNGQ120604ERGEKT4 |
| Grade | KCK20 |
| [LI] Insert Length | 13 mm |
| [LI] Insert Length | .5118 in |
| [S] Insert Thickness | 6.35 mm |
| [S] Insert Thickness | .25 in |
| [W] Insert Width | 13.504 mm |
| [W] Insert Width | .5316 in |
| [Rε] Corner Radius | 0.397 mm |
| [Rε] Corner Radius | .0156 in |
| Average Chip Thickness [HM] | 0.05 mm |
| Average Chip Thickness [HM] | .002 in |
| Cutting Edges per Insert | 4 |
Grades
KCK20
A new PVD multilayer AlTiN + AlCrN coated carbide with an excellent combination of wear resistance and coating strength. The KCK20 grade is specifically engineered to maximize coating adhesion and edge strength, making this grade ideal in wet interrupted cutting of gray and ductile irons, and can also be used in dry conditions. It can be used in a wide range of applications, from finishing to roughing, to maximize productivity wherever strength and reliability are needed.
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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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