Breakable metal is just rusted iron.
I object. Most alloys in TPT are made by melting the components, mixing thoroughly, and cooling. Making different molten elements sort into layers would defeat the purpose.
Maybe it could be an option.
msg1: BMTL Has A Ctype, It's Density Depends On The Ctype.
msg2: Maybe An Alloyer Element? It Mixes The Molten Stuff Even If They Layer.