Machinability Index
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Machinability Index
Machinability Index - Machinability index compares the machinability of different materials.
Machinability index, %
=Cutting speed of work material for 20 mm tool life / Cutting speed of SAE 1112 steel for 20 min tool life x 100
| Serial number | Metals | Mechinability Index (%) |
| 1 | SAE 1112 steel | 100 |
| 2 | Aluminium alloys | 300 - 1500 |
| 3 | Magnesium alloys | 500 - 2000 |
| 4 | Red brass | 180 |
| 5 | Copper | 70 |
| 6 | Stainless | 25 |
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