What is cutlery corrosion and how can you prevent it?

Have you ever noticed small rust spots on your cutlery after a dishwasher cycle? Don’t worry — you’re not alone. This phenomenon is known as cutlery corrosion or flash rust, and it's usually easy to explain and fix.

What causes cutlery corrosion?
The spots are caused by contact corrosion (flash rust). This occurs when different types of metal touch each other during the dishwasher cycle. In many cutlery sets, knives are made of 13/0 stainless steel, while spoons and forks are usually made of 18/10 stainless steel. These materials react differently to moisture and heat. When they come into contact in the dishwasher, a chemical reaction can occur, causing small rust spots.

Is it harmful?
No, fortunately not. The spots are only on the surface and do not damage the cutlery itself. They can be easily removed, and your cutlery remains perfectly usable.

How to remove flash rust?
Here are a few easy ways to restore your cutlery to its original shine:

• Use the soft side of a scouring sponge or a mild abrasive cleaner like Cif with a damp sponge. Gently rub over the spots.

• Soak the cutlery in a bowl of warm water and baking soda. Add a crumpled piece of aluminum foil to the water. After soaking, clean the cutlery with a sponge. This will help remove the rust.

How to prevent contact corrosion?
The best way to prevent contact corrosion is to keep knives separate from spoons and forks in the dishwasher. Knives are made from a different alloy (13/0 instead of 18/10) and are more susceptible to corrosion. A good cutlery arrangement or using separate compartments can make a big difference.