A good reason to switch to argon :)

Maybe, but I liked that you found the thermal conductivity for the different materials. I hadn’t even considered that it probably wasn’t the titanium until I started thinking about how those numbers for stainless and titanium were pretty close!

The iPhone 15 base models are still Aluminum. Also the iPhone 15 pro models are only titanium on the sides (all the way around the phone). The chassis is still Aluminum and the back is still glass.