Saturday, September 12, 2015

New aluminum alloy isn't to blame for iPhone 6S weight gain

You might notice something's a little different the first time you pick up an iPhone 6S. It's heavier than the iPhone 6. Not massively so, but it's not insignificant, either: both the 6S and the 6S Plus weigh about 11 percent more than last year's models, respectively.

But where does the extra heft come from? You might suspect that the stronger, aerospace-grade aluminum alloy used in the 6S is to blame, but you'd be wrong. The exact mixture of Apple's customized aluminum alloy is unknown, but the 7000-series alloys are only very slighly more dense than 6000-series mixtures, the type which was reportedly used in the iPhone 6. The difference between the two is the alloying elements: 7000 series is primarily alloyed with zinc, compared to...

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