Stainless steel is very durable and does not discolour because it does not oxidize. In other words, it is a very easy-care material that can withstand most. You can even wear stainless steel jewelry when bathing and showering. Note, however, that only stainless steels of type 316L and 316 can withstand salt water and pools containing chlorine. Stainless steel is also easy to clean with a mild detergent such as soap and water. It is usually enough to clean with lukewarm water. Stainless steel is slightly darker in color than silver.
Our stainless steel products are of the types 304 or 304L and 316 or 316L (American denominations). TYPE 316 also called Surgical Steel - contains distinction from type 304 molybdenum. Molybdenum increases the strength and heat resistance of the steel and also makes the steel more corrosion and acid resistant and can withstand saline environments. A standard material for the entire pharmaceutical industry. The designation L stands for the lower carbon content. The carbon content only matters when heated to temperatures between 500-850 degrees Celsius when corrosion can occur.
Common to all stainless steel types is that they contain more than 12% chromium. When steel is alloyed with at least 12% chromium, the resistance to rust increases by chromium reacting with oxygen and forming a very thin protective film on the steel surface. This film is called a passive layer and protects against what we commonly call corrosion or rust. If the layer is damaged, a new one is formed by contact with oxygen.
Stainless steel also contains other alloys which both protect against corrosion and give the steel other desired properties. For example, nickel, which improves formability and molybdenum which improves the steel to be resistance to chlorides and a variety of acids. Chrome gives the steel properties that prevent the metal from rusting or scratching.
The most common type of stainless steel is TYP 304 - which accounts for more than half of the stainless steel produced in the world. This type can withstand ordinary corrosion and withstand most chemicals. Type 304 is available in virtually all types of products.
Stainless steel contains Nickel, but it is so tightly bound in the metal that less than 0.1 million grams of nickel is released per cm2 per week, which meet the EU directive for products that come in close and long-lasting contact with the skin. The limit value is 0.5 million parts gram / cm2 / week.
316 has a higher price than 304 due to the global lack of molybdenum and the slightly higher nickel content.