well this is the first one I found...

http://www.ebay.co.uk/itm/Titanium-plat ... 564wt_1396

Pure grade 2 so i am guessing its to flexible for a base but might be good for top armour...

Here is the other...

http://www.ebay.co.uk/itm/Titanium-shee ... 500wt_1413

1,5mm,or 1.2mm Ti64... Something tells me neither is really suitable for a base