Identifying Ti and nimonic / monel ?

Density of titanium is considerably different compared to the others.
Michael Dahms

That's absolutely perfect ! Thanks.
Why can't the UK MOD have such handy publications ?

Hi,
May I suggest what in my opinion is the best, immediate, non destructive metal identification technique? It is called X-Ray Fluorescence (XRF) and it is performed either on fixed or on portable instruments. The simplest of the equipment provide only a qualitative identification, usually sufficient for segregating Titanium, Stainless, Monel etc. This equipment is already available with many junkyards, exactly for material segregation purposes. Maybe you can arrange to bring identified samples to whoever is ready to do the work for you. The qualitative job could be done for free or for a very limited expense. Or maybe you can arrange for a demonstration from one of the suppliers. I briefly treated this question in a page visible at luck. Elia Levi

Elia:
Yes, XRF will also work. There are even sorters that are optical emission spectrometers. Metorex makes both types. Niton also makes XRF equipment.
Pittsburgh Pete