XC90 High Carbon Steel
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Due to the high carbon content of XC90 steel, blades are expected to patina over time. Patina is displayed as a darkening of the steel from years of use, oil from hands, food and woods. Patina is completely normal and will actually help aid rust-resistance of your carbon blades.
CARBON BLADES WILL RUST if not cared for properly. If you own an Opinel Carbon Folding knife and your blade has begun to rust, it is important to grind or brush away any rust before using your knife on food. Proper care tips (below) will help keep your blades free from rust for years to come.
We suggest using light oils to condition your carbon blades and improve longevity. Mineral oil and olive oil are two food-safe options which will help defend against unwanted rusting. If you do not use your knife for food preparation, you can also use WD-40 to lubricate and condition carbon blades.
Classic Folding Knives, Garden Saws, Carbon Paring Knives