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There are several factors can cause stainless steel to become dull or corrode. These include exposure to harsh environments, different types of stainless steel, and other factors.
Coming into contact with highly concentrated chlorine compounds.
When exposed to chloride-containing environments, such as salt water, some types of stainless steel can suffer from pitting. To prevent this, it is important to use a stainless steel grade that is resistant to chlorides, like grade 316 stainless steel, or to apply a protective coating to the steel.
Welding dissimilar stainless steels
Joining two different metals with an electrolyte can cause an electrical current to flow between them, which can cause the metal to corrode faster. The rate of corrosion will depend on the type of stainless steel, the welding material, the temperature and humidity, and the amount of surface area in contact with the metal.
To prevent bimetallic corrosion, it is best to avoid connecting two different metals permanently. A coating should be applied to the metals and sealed to prevent the flow of electrons from the cathode to the anode. Additionally, using weld fillers that are too dissimilar to the metals being joined can cause galvanic corrosion in the weld area.
Connected with ordinary steel and iron
To ensure that stainless steel does not become discolored or corroded, it is important to thoroughly clean and prepare the equipment when replacing the material to prevent the transfer of any other metals to the stainless steel work-piece.
Use extreme temperatures
Stainless steel alloys have very high melting points, but they can still be affected by extreme temperatures which can cause the protective oxide layer to break down, increasing the risk of corrosion until the layer is reformed.
Environmental factors
If you are purchasing 304 stainless steel for use in a coastal area or for long-term use in seawater, it is important to inform the seller of the intended use so that they can recommend replacing it with 316 stainless steel instead.
How can stainless steel products be cleaned to restore their shine?
Scratches on stainless steel can expose it to corrosive elements and reduce its shine. If stainless steel is used in large construction equipment, the lack of luster may not be a concern, but if kitchen utensils or accessories are affected, there are methods to restore their original shine.
Dish-washing soap and water
To clean stainless steel, mix dish soap and water and use a soft cloth to wipe the surface. For tougher dirt, use a soft bristle brush. To restore the shine, use a polishing pad.
Baking soda cleaning
To restore the shine of stainless steel, mix baking soda and water to form a paste, then use a brush to scrub the metal with the paste. Rinse the surface with warm water to reveal a brighter and shinier stainless steel.
Silicon Dioxide Free Toothpaste
Cleaning stainless steel products with toothpaste is a simple and easy way to do it, just like using baking soda.
Ultrasonic cleaning
This is the optimal cleaning method for restoring products that will rust steel. However, this is only applicable to small stainless steel jewelry, which can be cleaned by continuous vibration of the machine to clean the stainless steel surface. However, ultrasonic cleaning is more costly. When we only have a few pieces of jewelry that need to be cleaned, we can find a jewelry store and ask them to help clean it (usually free of charge).
