Chapter 16      Stainless Steels - Machining Data

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 TURNING DATA FOR 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
 403, 410, 175-225 0.040 145 0.007 M2, M3 850 0.007 CC-7
 420, 422, A 0.150 115 0.015 M2, M3 550 0.015 CC-6
 501, 502   0.300 90 0.020 M2, M3 450 0.020 CC-6
    0.625 70 0.030 M2, M3 --- --- ---
  275-325 0.040 95 0.007 T15, M42 700 0.007 CC-7
  QT 0.150 75 0.015 T15, M42 450 0.015 CC-6
    0.300 60 0.020 T15, M42 375 0.020 CC-6
    0.625 --- --- T15, M42 --- --- ---
  375-425 0.040 65 0.007 T15, M42 475 0.007 CC-7
  QT 0.150 50 0.015 T15, M42 300 0.015 CC-6
    0.300 40 0.020 T15, M42 250 0.020 CC-6
    0.625 --- --- T15, M42 --- --- ---
 440A, 440B, 225-275 0.040 80 0.007 T15, M42 525 0.007 CC-7
 440C A 0.150 65 0.015 T15, M42 400 0.015 CC-6
    0.300 50 0.020 T15, M42 325 0.020 CC-6
    0.625 35 0.030 T15, M42 --- --- ---
  275-325 0.040 65 0.007 T15, M42 400 0.007 CC-7
  QT 0.150 50 0.015 T15, M42 325 0.015 CC-6
    0.300 40 0.020 T15, M42 250 0.020 CC-6
    0.625 --- --- T1-75, M42 --- --- ---
 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

yle: none; border-width: medium" colspan="9"> uncoated carbide tools.  

 The Ferrous Metals Data Book