Chapter 16      Stainless Steels - Machining Data

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 FACE MILLING DATA FOR FREE MACHINING MARTENSITIC STAINLESS STEELS

 

Hardness HB

 

High Speed Steel Tool

Coated Carbide Tool
Material Heat Cut Speed Feed per Tool Speed Feed per Tool
AISI Treatmenta Depth in fpm Tooth in Material fpm Tooth in Materialb
 416, 416Se, 185-240 0.040 175 0.008 M2, M7 915 0.007 CC-6
 420F, 420F Se, A, CD 0.150 135 0.012 M2, M7 600 0.010 CC-6
 440F, 440F Se   0.300 105 0.016 M2, M7 480 0.014 CC-5
  275-325 0.040 105 0.006 T15, M42 650 0.005 CC-6
  QT 0.150 90 0.009 T15, M42 455 0.007 CC-6
    0.300 70 0.012 T15, M42 355 0.009 CC-5
  375-425 0.040 60 0.004 T15, M42 375 0.003 CC-6
  QT 0.150 45 0.006 T15, M42 300 0.005 CC-6
    0.300 35 0.008 T15, M42 225 0.007 CC-6
 a. Heat treatment abbreviations are as follows: A - annealed; CD - cold drawn; QT - quenched & tempered.
 b. Coated carbide tool material grades are designated by additional prefix letter C, to distinguish it from the Industry Code system for
 uncoated carbide tools.
 

 

 The Ferrous Metals Data Book

 The Ferrous Metals Data Book