renaming corundum to copper make just about the same amount of sense as naming it corundum in the first place, as in none what so ever.
seeing as neither corundum( the stuff rubies are made of) or copper are used to make steel.
I know what corundum is. I know what copper is. I know what steel is. I didn't make the game or the vanilla crafting recipes, but you're missing the forest in spite of the trees here.
When the mod is in a later stage, as in a stage where I am involved in crafting recipes(which I am not right now, in case you haven't noticed.) there will be fundamental changes to the crafting system. Corundum was renamed Copper because it will become Copper. Since it makes no more or less sense now than it did before the change was a 'mind as well' change. If you take a look at my iron weapons along with some other you will notice a use of copper

. Corundum will become copper, as the rest of the mod it is incomplete.
Ah, I see.
For the names... Well, I think "Dunmeri Talwar" would be fine; there are plenty of instances where an item with different models all share the same name in vanilla, so putting its material in front of it isn't completely necessary.
I guess but, how well will that work when viewing the inventory, containers and merchants? I may choose to go with the material+style naming convention and leave the racial origin out of the equation. Ebony Talwar works, so does Moonstone Badelair and Orichalcum Scimitar.
Personally, I don't know why they didn't just make Steel weapons require Charcoal, and scrap Corundum entirely.
Because they're Bethesda? lol. When I get around to working on crafting recipes Steel will require Charcoal & Iron.