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Posted on Feb 18, 2021 by Relaxbottles Admin
Did you know that SUS304 and SUS316 are the most popular stainless steel that are widely used around the world? It will be extreme difficult to tell the differences between the grades of stainless steel from our naked eye. Both the stainless steel look almost identical to each other and the differences between the two are easy to miss. So, what are the differences between SUS304 vs SUS316?
We will answer that question and discuss different applications where the grades of stainless steel are used below.
Due to the addition of molybdenum, SUS316 stainless steel is more corrosion resistant than SUS304 stainless steel. This reduces pitting from chemical environments and allows SUS316 stainless steel to be used in highly acidic and caustic environments that would otherwise eat away at the metal. For instance, SUS316 stainless steel can withstand caustic solutions and corrosive applications such as vapor degreasing or many other parts cleaning processes.
These properties also make SUS316 stainless steel ideal for pharmaceutical and medical applications. Since sterilization processes in these industries combine both strong disinfectants and or with high temperatures to prevent contamination, a resistant alloy such as SUS316 is the ideal choice.
Seawater and salt air can cause damage to metals. Besides the rough environment of the sea and marine applications, chlorides, such as salt, can eat away at even the toughest metals in the world. Salt will even compromise the protective oxide layer of SUS304 stainless steel which will resulting in rust. For marine applications, or processes involving chlorides, SUS316 stainless steel is ideal.
SUS316 has better resistance to salt and chloride pitting. Pitting corrosion can occur when stainless steel alloys, such as SUS304 stainless steel, come into contact with salt-rich sea breezes and seawater. Chloride resistant metals, like SUS316 stainless steel, are essential to use for naval applications or anything involved with chloride.
SUS316 stainless steel is both tough and versatile, which makes it ideal for custom wire baskets built to last for years of use. This grade of stainless steel can be used to make durable baskets designed to even survived repeated exposure to high impact processes.
If you have an application with very powerful corrosives or relies on chlorides, then paying more for SUS316 stainless steel is definitely worth it because SUS316 stainless will last many times longer than SUS304 stainless steel.
However, for applications using milder acids or where salt exposure is not a concern for you, SUS304 stainless steel can work just fine.
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