
K390 VS S90V edge retention testing with a Spyderco Delica and Asher Spiro
Reviewed by @knifepile
Spyderco Delica® 4 Lightweight – 2.9" K390 SpyderEdge Blade, Blue FRN Handle – C11FSK390 is sold out — here are similar picks you can buy today.




CPM S30V baseline for comparison
Composite 1–10 ratings from published steel testing and manufacturer data, informed by Larrin Thomas's public research. Assumes typical production heat treatment.
Specs derived from Spyderco Delica® 4 Lightweight – 2.9" K390 SpyderEdge Blade, Blue FRN Handle – C11FSK390 listing data — verify critical details with the retailer.
Going Gear
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$123.20
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