Re: Titanium cases

On Tue, 13 Dec 2005 14:16:31 -0500, "Veritas" <paraxial@xxxxxxx>
wrote:

>Of course the phrase "stainless" steel doesn't have a great deal of meaning
>in itself - there are are wide variety of such steels, and some of them are
>tremendously tough, hard and corrosion resistant. I looked at a "titanium"
>watch a little while ago and it didn't quite look like titanium at all - it
>appeared to have been coated / plated. Any such coatings, platings, or
>oxide layers are likely to have problems and be polishable. But unless I am
>missing something, I imagine that a case that is solid titanium and not
>coated / plated should be able to be polished just like stainless, brass, or
>just about any other material.
>
Ti itself is not used in it's pure form. It is always alloyed with
something, such as aluminium or iron.
It has the advantage over stainless steel, that, just like aluminium,
it also forms a protective layer. While i'm not sure how hard it is,
if that layer is anything like what forms on plain aluminium, it will
be extremely hard to break through with polishing, hence the trouble
with trying to get scratches out of those things.
Ti is not cheap, so i wouldn't be surprised if the Seikos selling at
the 100 dollar mark would be just coated. They could well be producing
the cases from aluminium alloy, which in fact would still be much
lighter than titanium, then apply a nice coat of Ti on top of that.

--

Regards, Frank
.

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