Return Home Division of Commercial Grinding Services,Inc.
2100 Abbey Avenue, Cleveland, OH 44113
216-241-1340 | 800-379-1433
FAX: 216-241-6129
  

HI VELOCITY END MILLS —
Recommended Speed & Feeds for ALTiN coated
  CUTTING
SPEEDS		 1/8" 3/16" 1/4" 5/16" 3/8" 1/2" 5/8" 3/4" 1"
- - - - - - - - - - -
WORK MATERIAL
 SFM rpm - ipm rpm - ipm rpm - ipm rpm - ipm rpm - ipm rpm - ipm rpm - ipm rpm - ipm rpm - ipm
Titanium Alloys   HIGH 250 7640-15.3 5093-10.2 3820-9.2 3056-11.0 2547-11.2 1910-10.7  1528-9.2  1273-11.2 955-9.9
    LOW 212 6479-13.0 4319-8.6 3239-7.7 2591-9.3 2160-9.5 1620-9.0 1296-7.7 1080-9.5 810-8.4
IPT     0.0005 0.0005 0.0006 0.0009 0.0011 0.0014 0.0015 0.0022 0.0026
High Temp. Alloys   HIGH 125 3820-6.1 2547-4.1 1910-5.4 1528-6.8 1273-5.6 955-6.5 764-5.8  637-6.1 478-4.6
    LOW 106 3239-5.2 2160-3.4 1620-4.5 1296-5.7 1080-4.7 810-5.5 648-4.9 540-5.2 405-3.9
IPT     0.0004 0.0004 0.0007 0.0011 0.0011 0.0017 0.0019 0.0024 0.0024
ALLOY STEELS                      
4140-4340   HIGH 575 17572-42.2 11715-46.8 8786-56.2 7029-56.2 5857-58.5 4393-54.5 3514-49.2 2929-43.3 2197-35.15
Below 36Rc   LOW 450 13752-33.0 9168-36.7 6876-44.0 5501-44.0 4584-45.8 3438-42.6 2750-38.5 2292-33.9 1719-27.5
IPT     0.0006 0.001 0.0016 0.002 0.0025 0.0031 0.0035 0.0037 0.004
4140-4340   HIGH 387 11827-28.4 7884-31.5 5913-37.8 4731-37.8 3942-39.4 2957-36.7 2365 - 33.1 1971-29.2 1478-23.6
Above 36Rc    LOW 325 9932-23.8 6621-26.5 4966-31.8 3937-31.8 3311-33.1 2483-30.8 1986-27.8 1655-24.5 1242-19.9
IPT     0.0006 0.001 0.0016 0.002 0.0025 0.0031 0.0035 0.0037 0.004
Grey Cast Iron   HIGH 700 21392-68.5 14242-45.8 10696-34.2 8557-41.1 7131-34.2 5348-38.5 4278-34.2 3565-34.2 2674-30.0
    LOW 575 17572-56.2 11715-37.5 8786-28.1 7029-33.7 5857-28.1 4393-31.6 3514-28.1 2929-28.1 2197-24.6
IPT     0.0008 0.0008 0.0008 0.0012 0.0012 0.0018 0.002 0.0024 0.0028
TOOL STEELS                      
Below 36Rc   HIGH 575 17572-35.1 11715-32.8 8786-49.2 7029-53.4 5857-46.9 4393-46.9 3514-43.6 2929-37.5 2197-30.8
    LOW 450 13752-27.5 9168-25.7 6876-38.5 5501-41.8 4584-36.7 3438-34.4 2750-34.1 2292-29.3 1719-24.1
IPT     0.0005 0.0007 0.0014 0.0019 0.002 0.0025 0.0031 0.0032 0.0035
Above 36Rc   HIGH 262 8007-16. 5338-15.0 4003-22.4 3203-24.3 2669-21.4 2002-20.0 1601-19.9 1334-17.1 1001-14.0
    LOW 211 6448-12.9 4299-12.0 3224-18.0 2579-19.6 2149-17.2 1612-16.1 1290-16.0 1075-13.8 806-11.3
IPT     0.0005 0.0007 0.0014 0.0019 0.002 0.0025 0.0031 0.0032 0.0035
STAINLESS STEELS    
Hard to Machine   HIGH 362 11063-17.7 7375-11.8 5531-13.3 4425-17.7 3688-14.8 2766-17.7 2213-15.9 1844-16.2 1383-12.2
    LOW 325 9932-15.9 6621-10.6 4966-11.9 3973-15.9 3311-13.2 2483-15.9 1986-14.3 1655-14.6 1242-10.9
IPT     0.0004 0.0004 0.0006 0.001 0.001 0.0016 0.0018 0.0022 0.0022
Mild to Machine   HIGH 375 11460-22.9 7640-15.3 5730-16.0 4584-20.2 3820-16.8 2865-19.5 2292-17.4 1910-17.6 1433-13.2
    LOW 337 10299-20.6 6866-13.7 5149-14.4 4119-18.1 3433-15.1 2575-17.5 2060-15.7 1716-15.8 1287-11.8
IPT     0.0005 0.0005 0.0007 0.0011 0.0011 0.0017 0.0019 0.0023 0.0023
Easy to Machine   HIGH 487 14883 - 35.7 9922-23.8 7441-23.8 5953-28.6 4961-23.8 3721-26.8 2977-23.8 2480-23.8 1860-17.9
    LOW 387 11827-28.4 7884-18.9 5913-18.9 4731-22.7 3942-18.9 2957-21.3 2365-18.9 1971-18.9 1478-14.2
IPT     0.0006 0.0006 0.0008 0.0012 0.0012 0.0018 0.002 0.0024 0.0024
Soft Steels   HIGH 762