Chapter 16      Stainless Steels - Machining Data

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 TURNING DATA FOR CAST MARTENSITIC STAINLESS STEELS

 

Hardness HB

 

High Speed Steel Tool

Coated Carbide Tool
Material Heat Cut Speed Feed Tool Speed Feed Tool
AISI Treatmenta Depth in fpm lpr Material fpm lpr Materialb
 CA-15, 175-225 0.040 115 0.007 M2, M3 475 0.007 CC-7
 CA-15a, A, N, NT 0.150 95 0.015 M2, M3 425 0.015 CC-6
 CA-15M,   0.300 75 0.020 M2, M3 325 0.020 CC-6
 CA-40   0.625 60 0.030 M2, M3 --- --- ---
  275-325 0.040 75 0.007 T15, M42 400 0.007 CC-7
  QT 0.150 60 0.015 T15, M42 325 0.015 CC-6
    0.300 45 0.020 T15, M42 250 0.020 CC-6
    0.625 --- --- T15, M42 --- --- ---
  375-425 0.040 50 0.005 T15, M42 225 0.005 CC-7
  QT 0.150 40 0.010 T15, M42 200 0.010 CC-6
    0.300 30 0.015 T15, M42 150 0.015 CC-6
    0.625 --- --- T15, M42 --- --- ---
 a. Heat treatment abbreviations are as follows: A - annealed; ST - solution treated; H - hardened.
 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