316 stainless steel contains molybdenum, its corrosion resistance is better, acid and alkali resistance is also improved. 304 stainless steel lacks molybdenum, so corrosion resistance, acid and alkali resistance, are not as good as 316. 316 stainless steel is more expensive than 304 stainless steel, but the hardness is softer than 304 stainless steel. 316 stainless steel has strong corrosion resistance.
304 stainless steel is actually one of the stainless steel models that we use the most now. The common stainless steel bowls, stainless steel spoons, stainless steel water cups in our life are almost all made of 304 stainless steel. We all know that stainless steel is generally made of iron as the main component, and then add some carbon compounds, nickel, chromium and other metal elements made. Rating of stainless steel is generally the content of these rare metals. 304 stainless steel generally must contain 18% chromium and 8% nickel to meet its standards, which is often referred to as food-grade stainless steel standards.
Why is 316 stainless steel so much more expensive than 304 stainless steel? People who do not understand may have doubts. In fact, it is because 316 stainless steel in the composition than 304 more than a rare metal called molybdenum (Mo). This metal element can make 316 stainless steel have better corrosion resistance than 304. Therefore, it is also generally used in industries such as therapeutic, machinery, heavy industry or making parts in high temperature environments.
What are the uses of stainless steel?
There are problems of fingerprint contamination (smudges) and corrosion caused by food and medicine in the use of appliances for home appliances and interior materials. The countermeasure is to paint the surface of stainless steel, but the original coloring paint damage to the surface of stainless steel metal luster pattern. For this reason, in recent years, the development of both fingerprints can prevent pollution and corrosion, both excellent pattern of transparent lacquer stainless steel, mainly used for refrigeration and electronic instrumentation panels.
The original pre-coated transparent lacquer stainless steel in weathering, corrosion resistance is not ideal, with the advancement of paint pretreatment technology, has solved this problem, so that the transparent lacquer stainless steel productization. Stainless steel thick plate for transparent lacquer more need to carry out some grinding and other finishing processes, in order to obtain a good pattern.
Recently, in order to obtain a glossy feeling also used BA finishing. Generally, acrylic-based coatings are used, but in some deep-drawn high-finish applications, polymer polyester-based coatings are used.
In addition, fluorine-based coatings such as polyvinylidene fluoride (PVF) forks, which have excellent resistance to contamination and detergents, are used for siding around kitchens and industrial cold storage applications.