Apple Shifts iPhone 17 Pro to Aluminum, Keeps Titanium for 5.82-Ounce iPhone Air

2 articles · Updated · Boy Genius Report · Jun 21

Apple moved the iPhone 17 Pro line to aluminum in 2025, pairing the new chassis with a built-in vapor chamber to improve cooling while continuing to cut device weight.
The material split leaves titanium only on the ultra-thin iPhone Air, which weighs 5.82 ounces, while the iPhone 17 Pro and Pro Max come in at 7.27 ounces and 8.22 ounces.
That change extends Apple’s retreat from heavier metals: stainless steel framed iPhones had climbed as high as 8.47 ounces on earlier Pro Max models before titanium reduced the iPhone 15 Pro line’s weight.
Apple has made similar moves beyond phones, dropping stainless steel for Apple Watch Series 10 and saying the titanium models were nearly 20% lighter, signaling stainless steel is unlikely to return soon.