Josh,Robert Williams did it some years ago,at least I seem to remember him telling me about it.I sent a bunch of Sheffield razors out to be nitrided some years ago,and also got analysis done on a cast steel one,and a forged steel razor.I dont know where the paper work is,but will have some one look,and if I did it through my business they will be able to find it for me,and i will send it to you.Best regards Gary