[cinnamonteal]

Global production of titanium is about 210,000 metric tonnes. [1] An iPhone 15 Pro Max has about 18 grams of titanium in it. [2]

Rounding 18 up to 20 for the slightly larger 16 Pro Max, Apples sells 231 million iPhones per year. (210,000,000,000 grams)/(20 grams/iPhone * 231,000,000 iPhones) = 50.72

Apple is using at most 2% of the world's titanium. Obviously many of their phone sales are of smaller or titanium un-endowed models.

[1] https://en.wikipedia.org/wiki/Titanium_production_by_country [2] https://www.benzinga.com/general/entertainment/23/10/3511608...