Engineering steels 235(^0) r
r~
o.
800-
700
6OO
50O
400
3OO
200
100
e~
i
I
I
l!
0
i
0
0
0
d
~
Z
7-
I
!
i i
I I,...
.... I,
0
0
6
Z
r162
Figure 3.23 Basis prices of engineering steel billets as of 23 September 1996
However, some of the features that are often invoked as measures of machin-
ability are:
s Tool life
s Production rate (e.g. components/hour)
s Power consumption
9 Surface finish of component
s Chip form
s Ease of swarf removal