Mill 4-15™ Shoulder Milling Inserts

For excellent surface quality and higher metal removal rates, the Mill 4-15 inserts are the perfect solution in 90-degree shoulder milling applications. These double-sided inserts provide up to 4 cutting edges and are engineered with a thick design supporting material near the cutting edge. These milling inserts offer superior wall and floor finish results even through multiple passes. The Mill 4-15 system eliminates that finishing pass with an additional tool, saving time and money. Mill 4-15 inserts can be applied to steel, stainless steels, ductile, cast irons, limited titanium material applications.

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    • P Steel (74)
      • P0
        Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(70)
      • P1
        Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(70)
      • P2
        Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(70)
      • P3
        Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(70)
      • P4
        Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(70)
      • P5
        Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(74)
      • P6
        High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(74)
    • M Stainless Steel (63)
      • M1
        Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(63)
      • M2
        High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(63)
      • M3
        Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(63)
    • K Cast Iron (63)
      • K1
        Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(63)
      • K2
        Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(63)
      • K3
        High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(63)
    • N Non-Ferrous Materials (2)
      • N1
        Wrought Aluminum (2)
      • N2
        Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%(2)
      • N3
        High-Silicon Aluminum Alloys Si >12.2%(2)
    • S High-Temp Alloys (56)
      • S1
        Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(44)
      • S2
        Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(44)
      • S3
        Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(44)
      • S4
        Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(56)
    • H Hardened Materials (22)
      • H1
        Hardened Materials 44-48 HRC(22)
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    • 0.031 in(28)
    • 0.047 in(22)
    • 0.063 in(15)
    • 0.064 in(6)
    • 0.079 in(8)
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    Corner Radius
    • 0.4 mm(19)
    • 0.8 mm(28)
    • 1.201 mm(22)
    • 1.6 mm(15)
    • 1.625 mm(6)
    • 2.0 mm(8)
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    Grade Of Cutting Tool
    • KC422M (2)
    • KC520M (11)
    • KC522M (11)
    • KC725M (13)
    • KCK15 (11)
    • KCK20B (11)
    • KCPK30 (12)
    • KCPM20 (7)
    • KCPM40 (12)
    • KCSM30 (4)
    • KCSM40 (4)
    Insert Geometry
    Cutting Edge Length
    Cutting Edge Length
    • 16.151 mm(19)
    • 16.901 mm(27)
    • 16.925 mm(5)
    • 17.0 mm(47)
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    Cutting Edge Length
    • 0.636 in(19)
    • 0.665 in(27)
    • 0.666 in(5)
    • 0.669 in(47)
    Cutting Edge Length MintoCutting Edge Length Max
    Chip Breaker CBMD
    Chip Breaker CBMD
    • GE (79)
    • GEM (19)
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    • G (66)
    • P (32)
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