Difference between marine and food-grade stainless

by Muskan Ahuja

Posted on December 11, 2021 at 1:00 PM

food grade vs marine grade


Some materials are made for specific purposes, and different types of stainless steel are no exception. But what do ‘marine-grade’ and ‘food-grade’ mean? This article will be going over the differences between these two types of stainless steel to provide insight into your options when it comes to purchasing material for a project you have in mind.

What is the difference between marine-grade stainless steel and food-grade stainless?

  • Marine-grade stainless steel is stronger and more durable than food-grade stainless. This type of stainless will not rust, corrode, or develop a surface patina. It does not have a uniform shape and can be difficult to find.
  • Food grade stainless steel has a uniform shape and is easier to find. Marine-grade stainless is typically used for boats, ships, table legs, and outdoor furniture.
  • Marine-grade stainless steel is a type of stainless steel that has a minimum purity of 99.9%. This means that there are no other metals mixed with the steel to create a different grade.
  • Food-grade stainless steel does not have the same purity requirement and may include alloys or other metals to improve certain properties.
  • Marine-grade stainless steel is made to withstand corrosion and saltwater damage. Food-grade stainless steel cannot withstand the same conditions, but it does not need to because it only has to resist food acids.
  • Marine-grade stainless steel is normally more expensive than food-grade stainless. The two materials are different in that marine-grade has a higher chromium content. The chromium is what helps prevent corrosion and rusting.
  • Marine-grade stainless steel is also thicker than food-grade, which means it will last for longer periods. It is possible to use food-grade stainless steel in the marine environment, but not for cooking.
  • Marine-grade stainless steel is made from a different alloy that contains a higher level of chromium and nickel, which protects it from corrosion.

How are these grades of stainless steel used in the kitchen at home?

Marine-grade stainless steel is different from food grade, but it's still used in the kitchen. The first difference between the two grades of stainless steel is that marine-grade has a higher level of chromium for rust protection.

The second difference is that marine grade is thicker and more expensive than food grade. Marine-grade stainless steel is often used in saltwater environments, such as boats and yachts. It is not meant for cooking food; it will corrode and rust when left in contact with water. Food grade stainless steel is the type of metal that you want to have in your home kitchen because it is durable and can withstand any number of kitchen tasks.

What are the advantages of each type of stainless steel?

Marine-grade stainless steel, sometimes referred to as A5/A10 stainless, is more resistant to saltwater and abrasion. It’s not the best choice for use in food preparation because it’s highly reactive with acidic foods. Food-grade stainless steel is a more versatile version of this type of metal. It’s resistant to scratches and high temperatures but can’t withstand corrosion from acids or salts. Food-grade stainless steel is typically used for kitchenware. It's not as strong as marine grade, but the quality of the metal doesn't matter as much when it's not being submerged in saltwater. Stainless steel is a type of metal that resists corrosion and oxidation.

The two types of stainless steel are marine grade and food-grade stainless. Marine grades stainless steel, also known as austenitic, is made with chromium and nickel which helps it resist corrosion. It is typically thicker than other types of stainless steel, so it can withstand saltwater and moisture while still being strong. Food-grade stainless steel has a higher surface hardness than marine-grade stainless steel and does not contain nickel to reduce allergies.

Disadvantages of each type of stainless steel?

Stainless steel is a material that is being used in a wide range of products from cookware to jewelry. However, there are some disadvantages to this versatile metal. Marine-grade stainless steel is more expensive and less durable than regular stainless steel while food-grade stainless steel can have some carcinogenic properties. There are a lot of different grades of stainless steel.

The most important thing to know is that there is a difference between marine-grade and food-grade stainless. Marine-grade stainless steel is very strong and durable, but it can't be used with acidic foods because it will react with them. Food-grade stainless steel is not as strong, but it's safe for use with acidic foods.


Food grade stainless is not as durable and does not hold up to the use and abuse of marine life. Marine-grade stainless steel is more expensive but it will last for a lifetime, can withstand corrosion, and looks better for longer. Stainless steel is a metal alloy that does not rust easily. The grade of stainless steel determines its quality, and this affects how well it resists rusting. Food-grade stainless steel is used for kitchen utensils due to its low levels of nickel and chrome. Marine-grade stainless steel is more expensive because it has higher levels of nickel and chrome, making it resistant to corrosion.

Amardeep Steel is a supplier of stainless steel items and guarantees that its products pass a series of tests to ensure that they are pure and high-quality. For more updates, you can read our other blogs on our website and gain a deeper understanding of our products for your next business needs.

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