Is This How Apple, Inc. Can Afford Sapphire For the Rumored iPhone 6?

Upgrading the iPhone's cover glass to sapphire could be rather pricey. Investors are already expecting the Mac maker to make the move, but here's one way Apple could save on costs.

Jul 29, 2014 at 11:00AM

Sapphire Sheet

Paper-thin sheet of sapphire produced using Hyperion ion implanter technology. Source: GT Advanced Technology.

The sapphire smartphone storyline has come full circle. Last March, MIT Technology Review was among the first to contemplate whether or not sapphire could displace Corning Gorilla Glass in high-end smartphones. With Apple's (NASDAQ: AAPL) expected release of a sapphire-equipped iPhone 6 just months away, MIT Technology Review is back with some more details on how supplier GT Advanced Technology (NASDAQ: GTAT) could be cooking up copious amounts of the material.

One of the most prominent hurdles to sapphire adoption is the cost differential, although that gap has narrowed over the past year. In early 2013, a pure sapphire cover glass would cost $30 compared to Gorilla Glass's $3. A pure sapphire cover glass now costs $15-$20. However, there is an alternative to using a pure sapphire cover glass: using sapphire as a laminate.

To Hyperion and beyond
Applying an incredibly thin layer of sapphire to a less expensive material could be a way to balance out the premium while retaining the appealing characteristics. GT Advanced has implemented a new Hyperion ion implanting technology (acquired through GT's 2012 $10 million acquisition of assets and intellectual property from Twin Creeks) that allows it to produce sapphire layers as thin as 26-micrometers, which can then be applied on top of another material. Analysts estimate that laminating glass with sapphire could cost as little as $6.

This technology makes much more efficient use of the sapphire material, since, traditionally, sapphire pieces must be cut from larger wafers. That process takes a lot of sawing and grinding, and ends up wasting considerable quantities of the material. GT Advanced expects to get its first Hyperion order this year.

Even Apple likes to save money
That cost differential for laminated sapphire is much more manageable for OEMs, including Apple. No one knows quite yet whether or not Apple will use pure sapphire or laminated sapphire. Of course, Apple could easily afford to spend extra if it feels confident that sapphire would be a differentiated and marketable feature, but at the same time the marginal benefit to using pure sapphire over laminated sapphire could be negligible compared to the marginal cost. Margins are margins, and there's no reason to take unnecessary hits.

Rivals can't really afford pure sapphire, as most operate at negative margins. The only (but most important) competitor that could afford it is Samsung, but Samsung's handset business is hitting a ceiling right now as competition intensifies.

Pushing forward with sapphire
GT Advanced continues to be very bullish on sapphire's prospects, with its sapphire segment still expected to comprise 80% of revenue this year. Demand in the merchant market also remains robust, outpacing supply. In May, the company announced its next-generation ASF 165 furnace, which boosts boule size by 40% to 165 kilograms while also reducing production costs. Commercial availability of these new furnaces is slated for the third quarter.

In recent years, GT Advanced has also been designing its furnaces so that they can be upgraded with the latest and greatest without having to purchase entirely new equipment. For example, previous-generation ASF 115 furnaces can be upgraded to ASF 165, and GT Advanced expects many customers to convert their equipment. This will prove key, since the net result is reduced capital expenditures for sapphire material vendors, which will help keep prices down and potentially spur adoption.

Patience is a virtue
In a few short months, all will be known. Apple's iPhone 6 event is expected in September, where it will detail precisely what is or isn't in the handset. Apple's gross margins have stabilized meaningfully and the Mac maker's profitability was a particular area of strength last quarter.

The potential shift to sapphire could be a margin headwind, especially if Apple decides to go with pure sapphire cover glass (if at all). The upside would be that Apple appears to be preparing for a massive iPhone 6 launch.

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Evan Niu, CFA owns shares of Apple. The Motley Fool recommends Apple and Corning. The Motley Fool owns shares of Apple and Corning. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.

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