Boker Solingen Cottage-Craft Kitchen Knife

C75 is a high-carbon spring steel with balanced mechanical properties, often used in utility knives, work tools, and technical springs. The carbon content (0.7-0.8%) ensures high hardness, while manganese (0.6-0.9%) improves hardenability and resistance to impact and deformation. Silicon (0.15-0.35%) increases the elasticity and stability of the steel structure, while the low phosphorus and sulfur content reduces brittleness and improves metallurgical purity. However, steel is not corrosion resistant and therefore requires regular maintenance in humid environments. When properly hardened, it achieves a hardness of 56-58 HRC, providing a beneficial combination of sharpness, durability, and ease of sharpening.