Material Properties

Hi All:

Simple questions hopefully - I believe I have assigned a material property of Aluminum 6061 to a part. When I check the mass properties, I see a mass in grams, but at the same time, the density in the window shows as "0.0 grams per cubic millimeter". Is there not supposed to be a value there? (SW 2008)

Also, when I check the mass properties, the coordinate system icon moves temporarily - I assume this is to the CG position? It moves back after the mass properties window is closed

Thx

Andre

SolidworksParts And Features