Changelog
The aspect assignment for the various metals has been rewritten.
If you're not interested in the details, just know that different types of metals like plates and dust and many others are now supported too. You can close the changelog now.
Previously, all metal/material variations could only inherit aspects if they could be created on the handlers that Thaumcraft 6 supported for aspect inheritance (vanilla and Thaumcraft's own recipes). Sometimes I (the mod author) would add aspects to different variations myself, but this was inefficient.
Now, many different kinds of somehow processed metals are supported if the ingot is supported, and also the variation has an OreDict labeled with the desired metal. For example, if the author of a modpack using this mod added a version of a metal that is supported by my list, it will automatically get aspects even if that variation was not present in any popular mod. More information about all supported variations is written HERE.