Machinability Ratings

Machinability Ratings

GRADE
APPROXIMATE SURFACE
FEET PER MINUTE
RELATIVE SPEED
BASED ON C-1212

A-286

54

28

L-605

15

9

110

66

80

48

Monel R405

80

48

60

36

 K500 Aged

40

25

600

50

22

625

20

12

718

20

12

X-750

20

12

Waspaloy

45

20

MP 35N

45

20

MP 159

45

20

40

18

45

20

 These machinability ratios must be recognized as approximate values.  They are a reasonable guide to relative tool life and lower required for cutting.  It is obvious, however, that variables of speed, cutting oil, feed and depth of cut will significantly affect these ratios.

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