We use a lot of I-Parts and I-Assemblies, and some of those I-Assemblies are Weldments. I have mentioned this in the Discussion Group for Inventor, but most comments ask why an I-Assembly would need to set the Material I-Property. Perhaps a standard Assembly has no need of this, but a Weldment I-Assembly needs a viable Material I-Property so the welds can follow the material changes via the Table. Currently I can place the Material in my tables, but Inventor always pops up a notice that it detects potentially damaging errors in the table. I tell it to continue anyway, and my welds update to the material setting for that row in the table. We need this functionality to operate seamlessly. It shouldn't be that hard to add this at least for Weldment Assemblies.