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I wrote about my first large batch of 48 different steels (some with multiple heat treatments) in this article. I had another set of blanks cut out ready to heat treat basically right after that article was released but it has taken some time until they were all ready to test and now they are finally completed. The knives were ground and initially sharpened by knifemaker Shawn Houston. First I will give a rundown on what was tested.
The selection is a bit random here though there are some themes. Maxamet, CPM Rex 45, CPM Rex 76, CPM Rex 121, and CPM T15 are all powder metallurgy high speed steels. 420, XHP, and SPY27 are all stainless knife steels. XHP and SPY27 are both powder metallurgy steels while 420 is produced conventionally. 420 has better corrosion resistance than the other two.