18-8 Stainless Steel VS 316 VS 304

What is 18-8 stainless steel ? 18/8 stainless steel is a steel which is also called 18-8 stainless steel,18 8 stainless steel because it contains nominal 18% chromium, 8% nickel. The rest composition is remainder iron and a dozen or two of other elements. The common designations include 301, 302, and 304 stainless steel.

  Some times, Its code is 301 in JIS. So 18-8 stainless steel is also known as 304 grade stainless steel. This grade of stainless steel is generally regarded as one of the populate in stainless steel. Because it is widely available and the 18-8 stainless steel price is cheap. In18-8 stainless steel electropolished,The great finish can be gotten. This type of 18/8 stainless steel is soft and easy to surface damage.Like many stainless steels,18/8 stainless steel surface is easily to be etch.So it would be avoid putting it in contact with high levels of chloride ions.

18-8 Stainless Steel Chemical Element

Chemical Element Carbon Manganese Phosphorus Sulfur Silicon
Content 0.15 max 2.00 max 0.045 max 0.030 max 0.75 max
Chemical Element Chromium Nickel Nitrogen Iron
Content 18.00 8.00 0.10 max Balance

Features:Non-magnetic,Cannot be hardened by heat treating,Chrome-oxide surface layer,Rust resistant

Applications:Ideal for applications in highly corrosive environments

316 stainless steels is another steel.

  The 316 stainless steels have 2-3% molybdenum added while the 18-8 seriesstainless 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.

  So now, as a professional foundry, we have to know the different details of each stainless steel grade.We can not mistakenly believe that all stainless steel is the same.

  we have to know their corrosion resistant, , durable and long lasting. Whether you are buying any grade stainless steel products. Such as nuts, bolts, nails and screws, rivets and anchoring systems, we have to consider the environment elements.

What is the difference between 18 8 vs 304, 18-8 stainless steel vs 316 ?

  We must know what the difference is between 18-8 vs 304,18-8 vs 316-grade stainless steel.Here we list out a brief comparance.Hope it is useful for you.

GradeDifferentApplications
18-8 stainless steel This refers to the 300 series of stainless steel with a chromium and nickel content in percentages. That means that an 18-8 grade fastener has 18% chromium and 8% nickel content. 18-8 type stainless steel has better resistance to corrosion than the 400 series. It can be hardened by only cold working and isn’t magnetic. Ideal for applications in highly corrosive environments
304 stainless steel This is a basic alloy. It cannot be heat hardened and is also non-magnetic. While this grade of stainless steel won’t rust, it will tarnish and has a strong resistance to the effect of various chemicals and acids. It is commonly used for sinks, pots, pans, tables and similar. 304 stainless steel is very often used in the dairy and brewing industries.
316 stainless steel This product offers high tensile strength. It has a corrosion resistance that can withstand harsh environments. It is also non-magnetic and must be hardened through cold working. The difference between type 304 and 316 stainless steel is the incorporation of molybdenum of up to 3%. This grade of stainless steel is commonly used in the surgical industry, paper pulp industry and in the production of dyes and chemicals.

  Now we know the difference between 18-8, 304 and 316-grade stainless steel. You can make a better choice for your application in terms of casting. Kindly contact us for more information and advice on our stainless steel foundry castings.You will get a professional answer.

  The Choosing of the correct grade of stainless steel is essential to ensuring your product quality.