SPIKA Challenger knives are built with Japanese high-end AUS-8 steel alloy. The steel makes the heart & soul of the Challenger knives.
AUS-8 is a medium-carbon, high-chromium stainless steel. It is about balance – exceptional balance between toughness, edge sharpness, and corrosion resistance. Balance provides lasting precision and value. Combined with the meticulous heat treatment standards, AUS-8 steel ranks among the hardest, toughest, and most rust-resistant knife alloys available.
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