If the physical properties are set in the CNS classification on the PARTsolutions website, these are also transferred to the CAD system during export.
In the PARTdataManager the attributes of the CNS classification are displayed in the index tree, in the context menu of a part under the menu item Part information.
The following points show how SolidWorks behaves in different scenarios:
If a material has been transferred from PARTsolutions (material mapping), then this will always be applied and therefrom the density results.
The density detected via material has higher priority than an explicitly declaration of the density in form of an attribute.
If no material has been transferred from PARTsolutions, but an exact density from PARTsolutions, then the exact density is set.
If an exact mass is transferred from PARTsolutions, then the exact mass is set without the rest of the physical properties.
The Assigned mass properties option is then activated in the Mass properties dialog box.
The volume cannot be transferred from PARTsolutions, because it is calculated by the geometric model.