iPhone 15 Pro rumored to use titanium instead of stainless steel: What we know

Among other changes, this year’s iPhone 15 Pro models are rumored to feature a new body made of titanium for the first time. This allows for lighter designs, greater durability and more. In fact, this could be one of the biggest design changes to iPhones in years, marking the end of the stainless steel era that began with 2017's iPhone X.

So far, a few different sources have reported that the iPhone 15 Pro and iPhone 15 Pro Max (or iPhone 15 Ultra) may feature a new titanium design.

Twitter leaker ShrimpApplePro reported in November that the iPhone 15 Pro design would consist of a titanium casing with rounded edges. This was also confirmed by JPMorgan analyst Jeff Pu, who responded to the Twitter leak in an investor note earlier this month.

For several years, Apple has been working on an iPhone with a titanium body. The company's multiple patent applications demonstrate its work in this area. But to get the clearest idea of ​​what a titanium iPhone 15 Pro might bring, we need to look at the Apple Watch.

Titanium iPhone 15 Ultra vs. Apple Watch

Since the launch of Apple Watch Series 5 in 2019, Apple Watch has been available in titanium finish. Apple Watch Series 5 is available in two colors of titanium finish – Natural and Space Black. This marks the first time Apple has used titanium in a product since the launch of the PowerBook G4 in 2001.

The Apple Watch Series 6 comes in the same natural and space black titanium finishes as the 2021 Apple Watch Series 7, which brings us to the current generation of Apple Watch. This time, the new Apple Watch Ultra is exclusive to a titanium finish.

Apple Watch Series 7 Edition: “Natural” and “Space Black” titanium finishes

What we can get from Apple on the Apple Watch Series There are two things to know about the way you work with titanium: color and weight.

Perhaps most noteworthy is the weight difference between stainless steel and titanium. Apple has been selling Apple Watch models in both finishes for years. However, the iPhone range has been made of stainless steel since 2017’s iPhone X.

Here are the weight differences of the three different finishes of Apple Watch Series 7. Apple Watch Series 7 is the previous generation of Apple Watch, available in three different materials in 41mm and 45mm sizes.

• 41mm:
  • Aluminum: 32.0g
  • Stainless steel: 42.3g
  • Titanium: 37.0g
• 45mm:
  • Aluminum: 38.8g
  • Stainless steel: 51.5g
  • Titanium: 45.1g

And then there’s the Apple Watch Ultra, which is currently the only Apple Watch with a titanium finish. It's also the largest Apple Watch Apple has ever sold, with a case size of 49mm. Here's the breakdown for Apple Watch Series 8 and Apple Watch Ultra:

• 41mm:
  • Aluminum: 32.2g
  • Stainless Steel: 42.3g
• 45mm:
  • Aluminum: 39.1g
  • Stainless steel: 51.1g
##Apple Watch Ultra 49mm:
• Titanium: 61.3g

Apple Watch Ultra is made of stainless steel? That won't work. What makes the Apple Watch Ultra practical is the weight of titanium.

It’s no surprise that titanium is lighter than stainless steel, but I find the differences in the Apple Watch lineup over the years particularly interesting. The Apple Watch gives us the only look into how modern Apple itself is approaching the use of titanium in its products.

Within the iPhone lineup, Apple has been using stainless steel edges since the launch of the iPhone X. Recent iPhone generations have used aluminum in non-Pro models and stainless steel in Pro and Pro Max models. Of course, this means the iPhone 14 is lighter than the iPhone 14 Pro.

iPhone 14: 172 grams
• iPhone 14 Plus: 203 grams
• iPhone 14 Pro: 206 grams
• iPhone 14 Pro Max: 240 grams

If the iPhone 15 Pro and iPhone 15 Pro Max were made of titanium, they would not be any lighter than the aluminum iPhone 15 and iPhone 15 Plus. However, they are significantly lighter than the iPhone 14 Pro and iPhone 14 Pro Max, which feature stainless steel bands on the sides.

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