![]() ![]() You will rarely encounter a patina on a Stainless Steel knife, However, they can form quite easily on a Carbon Steel knife, due to the lack of Chromium. This is because Stainless Steel blades contain Chromium, which makes them resistant to all kinds of corrosion. Make sure you deal with it appropriately! If you see these orange stains, it’s rust, not patina. Here’s a guide to help you Remove Rust from your Knife. Rust can damage your knife and is not the most attractive thing to have on your blade, so make sure you get rid of it quickly. So if you come across orange or red stains, it’s not a patina. Patina usually consists of black or grey stains. This can cause variation in their thickness, the color, the hue, and the overall aesthetic appeal! However, patinas can have a range of chemical compositions (involving other oxides, carbonates, and sulfates). However, rust has the formula Fe 2O 3, while the most common form of patina you’ll encounter on knives is Fe 3O 4. So what is the actual difference between patina and rust?įirstly, the chemistry behind each is a bit different… Both compounds are a form of Iron Oxide. Just like rust, patina affect Carbon Steel more than Stainless Steel. Just like rust, a patina is a form of metal corrosion and will cause stains and marks on the blade. In other word, it a patina usually represents the aging of a blade. The word ‘patina’ is also used to describe the discoloration and the accumulation of the changes in texture and appearance of the blade over time. Magnetite, the mild form of oxidation that gives a blade a patina, is the substance responsible for the charcoal grey discoloration. Patinas can also contain many other substances, including other oxides, sulfates, and carbonates. The most common type of patina causes a black/grey stain on the blade and has the chemical formula Fe 3O 4. It is a layer of Iron Oxide, formed from the oxidation of the Iron in your Steel blade by the Oxygen of the air. Patina, on knife blades, is a type of corrosion. Let’s have a closer look at how patinas form and what you can do to either force one onto your blade or get rid of it. A patina can form naturally or be forced onto the metal. It is a type of corrosion that can make a knife basically rust-proof in the long term and will change the appearance of the blade. So I did a bit of research, and here’s what I found.Ī Patina is a thin layer that forms on the surface of a metal over time (the blade). It surprised me because I actually didn’t know anything about it! I was playing around carving wood with my pocket knife the other day and I noticed strange stains on the knife’s Carbon Steel blade.Īfter googling what could cause it, I came across the word ‘patina’. ![]()
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