Found the following materials comparison, might be interesting to some of you as all of our high-end flashlights are made of aluminum...
<font class="small">Code:</font><hr /><pre>
RHA Aluminum 5083 Ti-6Al-4V
MIL-A-12560 MIL-A-46026 MIL-A-46077
----------- ------------- -----------
Tensile Strength (MPa) 1,170 350 970
Density (g/cm3) 7.86 2.70 4.50
Specific Strength* (MPa-cm3/g) 150 130 220
Mass Efficiency (Em)** 1 1.0-1.2 1.5
</pre><hr />
(RHA = steel)
<font class="small">Code:</font><hr /><pre>
RHA Aluminum 5083 Ti-6Al-4V
MIL-A-12560 MIL-A-46026 MIL-A-46077
----------- ------------- -----------
Tensile Strength (MPa) 1,170 350 970
Density (g/cm3) 7.86 2.70 4.50
Specific Strength* (MPa-cm3/g) 150 130 220
Mass Efficiency (Em)** 1 1.0-1.2 1.5
</pre><hr />
(RHA = steel)