Material Use
Metals, both ferrous
and nonferrous, plastics, and other organic materials have been
used.
The starting workpiece
is usually the product of other processes, such as casting, shaping,
forging, extrusion, and drawing.
Machinability is an important
factor in the cost of turned products. Products made of materials
with high machinability cost less even when if the bulk materials
are more expensive.
Following is a list of
materials and their machinability ranking.
| Material |
Ranking |
| Cast Iron |
80 |
| Carbon
Steel |
80 |
| Alloy
Steel |
50 |
| Stainless
Steel |
50 |
| Aluminum
& Alloys |
100 |
| Copper
& Alloys |
100 |
| Zinc &
Alloys |
80 |
| Magnesium
& Alloys |
80 |
| Titanium
& Alloys |
50 |
| Nickel
& Alloys |
50 |
| Refractory
Metals |
50 |
| Thermoplastics |
50 |
| Thermosets |
50 |
| Ceramics |
0 |
| PhotoPolymers |
0 |
| Wood (dry) |
80 |
A value of zero means
that the corresponding material is never used with this process,
a ranking of 100 means that it is excellent for use with this process.
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