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Stainless Steel Grades, Applications and Magnetic Compounds

Stainless Steel Grades, Applications and Magnetism

Today, we will look at different grades of stainless steel 18/8, 304, A2, 316, A4 and 410 that are magnetic and non magnetic, or so they say.  I am emailed all of the time “Why is this bolt magnetic?”  Most common grades of stainless steel are magnetic in some degree.  In fact, all of the stainless steel coming into the USA from china and other countries are magnetic in some form.  18/8, 304, A2 and 410 are more magnetic than 316 or A4 stainless steel.  The most common grade of stainless steel is 304, or as referred to 18/8, and in metric A2.  The second most common grade is 316 which is used in salt water application marine grade, food prep equipment, surgical, medical and pharmaceutical applications.  316 Stainless steel is used in these areas to minimize metallic contamination.  316 stainless is used in marine applications due to its increased resistance to chloride corrosion compared to 304, 18/8, A2 or 410 stainless steel.  Also most high-end watches are made with 316 stainless.  410 Stainless steel is used in most construction fasteners when a high strength iron chromium water-resistant product is required, but less corrosion resistant to water.


  • 18/8, 304 and A2 are used in most common construction projects, telecom, car, truck and trailer restoration, playgrounds that are exposed to the elements of natural rain water.  These grades are all magnetic. Here is a sample of 304 18/8 Stainless Steel
  • 316 And A4 are used in food prep manufacturing equipment, salt water marine application, surgical and pharmaceutical equipment and products.  Watches are made from 316 or A4 stainless steel.  Partially magnetic.  Here is a sample of 316 Stainless Steel
  • 410 Is used in most construction fasteners in exterior application exposed to the elements.  These fasteners are used in standard rain water application where there is no salt water exposure.  410 are magnetic.  Here is a sample of 410 Stainless Steel

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20 thoughts on “Stainless Steel Grades, Applications and Magnetic Compounds”

  1. I was looking for online professional writers to Edit my Case Study Assignment before I landed on this magnificent site. I have found unique and educative information about stainless steel grade application. I will bookmark this site and visit it occasionally to read more blog articles.

  2. Great source about stainless steel grades and applications! It’s interesting to read the post and user could gain more knowledge by looking at these kind of posts.
    Keep on Sharing!

    1. Thank you so much for the kind post! We are currently working on making blog posts a more common practice here! And if you are looking for even more information check out our Fasteners 101 resource pages. Let us know if there is anything specific you have always wondered about. We would love to help!

  3. Hi JAE, the stainless itself is non magnetic, however it is important to note that the fasteners can pick up some magnetic properties while they are being formed due to the equipment used in the manufacturing process.

  4. A2 (304, 18/8) is an austenitic steel and is non-magnetic.

  5. Hi Rinox, what kind of fasteners are you using for the installations? We frequently feature our customers installation photos in our "Cool Creations" newsletters. If you would like to be a part of that please let us know!

  6. Rinox offers a wide range of products in Stainless Steel Railing, Stainless Steel Handrail, Handrail Accessories, Glass Handrail, Glass Clip, Cable Railing. RINOX products are installed in thousand of locations worldwide including Airport, Shopping Malls, Office Building, Residential Projects, Hospial, Metro Station etc.

    Stainless steel Handrail

  7. what a nice video. It is nice to watch more information of fasteners in youtube. So that other people should be aware of using fasteners for building stainless steel fasteners.

  8. What a nice video, it good to see more information on fastener on Youtube. We have been trying to get more information on the basic of fastener design so people understand the difficulties of building stainless steel fasteners. EJOT UK

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