Spyderco UK Penknife Cobalt Blue FRN CPM-SPY27 Blade

The CPM-SPY27 is a special steel made by Crucible specifically for Spyderco. It has a high cobalt content, similar to S35VN steel. It offers a good balance of hardness and toughness, comparable to S35VN. In terms of corrosion resistance, it is similar to S30V steel. However, when it comes to sharpening, SPY27 performs better than both S35VN and S30V. Overall, SPY27 is a well-rounded steel that is suitable for everyday use. It offers excellent edge holding, toughness, and corrosion resistance, making it comparable to other premium stainless steels.