Steels
Low Alloy Steels
Commonly called “carbon steels” these steels are known for their extremely fine structure and ease of sharpening as well as the story they tell as they patina with use.
High Alloy Steels
Sometimes also referred to as “tool steels” or “semi-stainless steels” this broad class of steel offers the best performance characteristics.
Stainless steels
This subgroup of high alloy steels provides the best corrosion resistance. Although sometimes at the cost of a reduction in either wear resistance or toughness compared to similar steel from the previous class.
Steel ratings are based on those done by Dr. Larrin Thomas in his article Knife Steels Rated by a Metallurgist.