12C27 Steel (specifically Sandvik 12C27) is a high-performance martensitic stainless chromium steel developed by the Swedish company Alleima (formerly Sandvik Materials Technology). It is widely regarded as one of the best "all-around" steels for knife blades due to its balanced performance.
Key Characteristics
Edge Performance: It provides excellent edge sharpness and edge stability, making it popular for high-end kitchen cutlery and pocket knives.
Corrosion Resistance: With a chromium content of approximately 13.5%, it offers high resistance to rust and staining.
Ease of Sharpening: Unlike some "super steels" that are extremely hard to grind, 12C27 is famously easy to sharpen to a razor-like edge.
Toughness: It is highly durable and resistant to chipping under normal use.
Chemical Composition
According to technical data from Xerxes-Knives, the typical composition is:
Carbon (C): 0.60% (for hardness)
Chromium (Cr): 13.50% (for corrosion resistance)
Manganese (Mn): 0.40%
Silicon (Si): 0.40%
Common Applications
Due to its versatility, you will frequently find this steel in:
Outdoor & Hunting Knives: Used by brands like Morakniv and Brusletto.
Pocket Knives: Common in Everyday Carry (EDC) folders like Opinel.
Kitchen Cutlery: Used in professional chef's knives and serrated blades.
Specialized Tools: Used for surgical instruments, ice skate blades, and industrial cutting tools.