Mill 4-12KT™ Carbide Milling Inserts
Kennametal’s Mill 4-12KT tangential shoulder milling inserts offer the innovation needed for aggressive cutting parameters on steel and cast-iron applications. They are engineered with a triangular-shaped margin that provides unprecedented stability. The Mill 4-12KT inserts deliver the lowest cost per cutting edge and increased metal removal rates. Ideal for automotive, energy, and general engineering when shoulder milling and slotting. Select from our comprehensive portfolio that offers a wide range of standard inch and metric sizes.
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Workpiece Material
Workpiece Material
- P Steel (45)
- P0Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(35)
- P1Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(35)
- P2Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(35)
- P3Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(35)
- P4Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(35)
- P5Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(45)
- P6High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(45)
- M Stainless Steel (45)
- M1Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(45)
- M2High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(45)
- M3Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(45)
- K Cast Iron (34)
- K1Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(34)
- K2Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(34)
- K3High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(34)
- S High-Temp Alloys (45)
- S1Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(35)
- S2Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(35)
- S3Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(35)
- S4Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(45)
- H Hardened Materials (8)
- H1Hardened Materials 44-48 HRC(8)
Corner Radius
Corner Radius
- 0.016 in(8)
- 0.031 in(27)
- 0.047 in(12)
- 0.061 in(20)
- 0.078 in(13)
- 0.094 in(6)
- 0.125 in(6)
to
Corner Radius
Corner Radius
- 0.4 mm(8)
- 0.8 mm(27)
- 1.201 mm(12)
- 1.55 mm(20)
- 1.975 mm(13)
- 2.375 mm(6)
- 3.176 mm(6)
to
Application
Grade Of Cutting Tool
Grade Of Cutting Tool
- KC522M (12)
- KC725M (7)
- KCK15 (11)
- KCK20 (2)
- KCK20B (13)
- KCPK30 (15)
- KCPM40 (17)
- KCSM40 (15)
Front-End
Insert Shape
Insert Shape
- L-RECTANGLE 90 (5)
- L-RECTANGLE ON EDGE 90 (87)
Insert Geometry
Shape
Shape
- L-RECTANGLE 90 (5)
- L-RECTANGLE ON EDGE 90 (87)
Chip Breaker CBMD
Chip Breaker CBMD
- GE (74)
- HD (12)
- PU (6)
Tolerance Class
Tolerance Class
- G (86)
- P (6)
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