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Home > Exhibition > Content
How to tell if a piece of metal is really titanium.
May 02, 2017

First: Titanium is non-magnetic. If a magnet sticks, then no. I always carry a neodymium magnet for scrap yards and estate sales.

Are there any grade markings on it? If so, there are many that might mean titanium in its many grades and alloys. Most alloys can be anodized. I usually Google the numbers to see what variation of what grade I find in scrap yards. Many different specifications exist for chemically/commercially pure titanium, depending on sub percentage trace elements (mostly oxygen) and what certifications it has received (mil-spec, medical, etc).


titanium.jpg


File or sand off an edge to be sure you are looking at the bare metal. It should be a shiny dark silver. Compare it to a piece of (freshly scratched) aluminum; it should be much darker. If the fresh metal is a different color, then, no.

Does it anodize to color? If you can get to a bare piece of metal, just apply a moist cathode (paper towel) to the positive-attached metal. 9v should do to get a slight tan tinge. 18v (2 9v batteries) will take you to dark violet.
 Note:Niobium and tantalum will color the same way. But they are heavier and softer and more expensive.

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