It might be a useful indicator, or purposeful for rapid sampling on the hunt for Faraday's alloy. Then you could probably date the razors more accurately. Spectrographic destruction would give better percentages.

I was interested in the 14% carbon vs oxygen sample. My thoughts are the superficial oxidation was the source. Cleaning that to bare deoxidized metal would have given a more accurate carbon content. Still fascinating to play with such nice toys though.