is the white anodized to?

Discussion in 'iPhone' started by irispen, Sep 21, 2012.

  1. irispen macrumors newbie

    Sep 19, 2012
    is the white anodized too?

    compare to iphone 4, its look like it is anodized as well. meaning it is also prone to scratches and scuff, just less noticeable.


    can anyone confirm this?
  2. fizzwinkus macrumors 6502a

    Jan 27, 2008
    yes, the white iPhone has a "natural" anodizing.
  3. irispen thread starter macrumors newbie

    Sep 19, 2012
    they should stick with iphone4's design on aluminum
  4. xAnthony macrumors 65816


    Mar 2, 2010
    Kinda late for that now, don't you think?
  5. irispen thread starter macrumors newbie

    Sep 19, 2012

    if they did that (for white and black), this would be a perfect phone hardware wise.
  6. NismoRoadster macrumors regular


    Mar 16, 2011
    Cerritos, CA
    The 4/4S was stainless steel and the white 5 is anodized aluminum. The material is different that's why it doesn't match.
  7. ineel macrumors regular

    Jul 8, 2010
    The iPhone 4/4s have a stainless steel (non oxidizing iron/chromium alloy) band around the phone. The white iPhone 5 is made of 100% non-anodized aluminum. But, since Aluminum is reactive with oxygen in the air, a clear coat od Aluminum oxide forms on the Aluminum surface. Because Al does not expand when it oxidizes, it creates a clear protective layer of oxide that prevents further corrosion of the aluminum. This natural protective coating is called anodization. In chemical anodization such as the black iPhone 5, a pigment is added to the aluminum, and thought the anodizing process the aluminum "holds" on to each individual pigment particle. This allows light to reflect off both the pigment and aluminum giving you that nice anodized look the iPods and iPhones have rather than slapping on some pain that covers up the metals beauty. These scratches on anodized aluminum is more noticible since only the anodized aluminum layer is only 5-15nm thick. If you scratch the white iPhone, a new clear oxide layer will form and protect the aluminum from further corrosion.

    Aluminum is also very fatigue and impact absorbing material. It can withstand many many fatigue stresses put on it.
  8. index1489, Sep 22, 2012
    Last edited: Sep 22, 2012

    index1489 macrumors member

    Jun 24, 2009
    Yes raw aluminum does form a light layer of aluminum oxide when exposed to air, but I do think the white model is chemically anodized aswell to increase thickness and improve uniformity, unsure if dye is added (silver) or if its natural color.

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