Page 582 - Ceratizit Catalog

Aluminium - machinability
B255

It depends on the type of alloy whether aluminium materials
are easy to machine or not.
From the easily machined aluminium alloy to the problematic
pure aluminium all levels of machinability can be found.

Group Alloy type Relative machinability
Pure Al Al 99,9 5
Wrought alloys Al Mn 4 - 5
Al Mg 3 - 5
non hardened
Al Mg Mn 3 - 4
Al Mg Si 3 - 4
Machining alloy stock 1 - 2
hardened Al Cu Mg 2 - 3
Al Cu Si Mg 3
Al Zn Mg Cu 2
G - Al Si 3
G - Al Si Mg 2 - 3
G - Al Si Cu 2
G - Al Mg 2
Cast alloys
G - Al Mg Si 2
G - Al Cu Ti 2
G - Al Si Cu Mg Ni 2 - 3

1 = very good machinability

5 = bad machinability

Machinability can be defined as the degree of difficulty that
a material creates when being machined. In order to assess
the machinability of a material basically four parameters have
to be taken into consideration:
○ Cutting force
○ Tool life
○ Surface quality
○ Chip formation

Milling / Technical information