If you paid any sort of attention during the last book, you were probably expecting a new metal or two to show up in this book. I dropped a lot of hints that there were other metals.
It was a little bit of a stretch to let there be metals that, despite the thousand-year history of Allomancy, weren’t known. However, I rely on the fact that the Lord Ruler had informational control over the society. There are A LOT of things that he knew that aren’t known to a lot of people.
Duralumin is a real alloy from our world, commonly made from Aluminum. Actually, a lot of things we call aluminum—particularly industrial aluminum—is actually duralumin. Aluminum, pre-electrolysis, was really tough to get. It’s said that Napoleon had a set of aluminum plates that were more valuable than his gold or platinum ones.
If you are viewing this on github.io, you can see that this site is open source. Please do not try to improve this page. It is auto-generated by a python script. If you have suggestions for improvements, please start a discussion on the github repo or the Discord.