material properties

[megok]

I am relatively new at using ACAD and mechanical desktop. I would like to determine the center of mass of a 3d assembly. I found the amassmprop function but the materials I am using are not listed. Is there a way to assign the physical properties of the materials to the different parts of the assembly?

 

[hyposmurf]

the mass prop only give the volumen , and the mass for body whose especific wiegth is 1.