🤓 Actually almost all modern clothes irons are made with an aluminium* soleplate now, to minimize corrosion. The soleplate makes up most of the metal content of the iron, and is then coated with a thin layer of non-stick coating like non-stick paint, plastic/polymer, or stainless steel.

https://www.madehow.com/Volume-6/Clothes-Iron.html

*I'm Australian.