The 316 stainless steels have 2-3% molybdenum added while the 18-8 series stainless steels do not. While it has comparable strength characteristics, 316 and 316L stainless steel have a higher degree of corrosion resistance due to the addition of the element molybdenum.
Simply so, are 18 8 and 304 stainless steel the same?
18/8 stainless steel is 304 grade stainless steel, which is the most widely used and flexible austenitic form of stainless steel. The numbers 18/8 represent the composition of this steel as 18% chromium and 8% nickel, making it very resistant to corrosion and oxidation.
Thereof, does 316 stainless rust?
Comparison Between 304 vs 316 Stainless Steel
Both resist rusting and corrosion well, while also offering added durability. … 316 stainless steel, for applications that require superior resistance to corrosion or water, use 316 stainless. For other applications, 304 stainless will work just fine.
How strong is 316 stainless steel?
|Grade||Tensile Str (MPa) min||Yield Str 0.2% Proof (MPa) min|
Overall, grade 316 is usually the better choice when making food-grade stainless steel containers. 316 SS is more chemically-resistant in a variety of applications, and especially when dealing with salt and stronger acidic compounds such as lemon or tomato juice.
It is the addition of chromium that gives the steel its unique stainless, corrosion-resisting properties. Austenitic 304 and 316 stainless steels are considered surgical or medical-grade stainless steels, they are the most commons stainless steels.
Though the stainless steel 304 alloy has a higher melting point, grade 316 has a better resistance to chemicals and chlorides (like salt) than grade 304 stainless steel. When it comes to applications with chlorinated solutions or exposure to salt, grade 316 stainless steel is considered superior.
18/10 stainless steel has 18% chrome and 10% nickel, hence the 18/10 classification. Likewise, 18/8 stainless steel has 18% chrome and 8% nickel. While 18/0 stainless steel has 18% chrome and 0% nickel. Nickel effects stainless steel’s corrosion resistance and luster.
The key difference between 316 and 316L stainless steel is the carbon content. While 316 has a maximum carbon content of 0.08%, 316L has a maximum carbon content of only 0.03%.
Martensitic grades include 420 stainless steel, which is used in engineering applications like shafts and 440C stainless steel – the hardest and most abrasion resistant of all the stainless steel.
The simple answer is 304 contains 18% chromium and 8% nickel while 316 contains 16% chromium, 10% nickel and 2% molybdenum. The molybdenum is added to help resist corrosion to chlorides (like sea water and de-icing salts).