When choosing a stainless steel for marine applications, it’s important to know the differences between 304 vs 316 Stainless Steel. While the 304 grade is generally less expensive, the 316 grade offers stronger corrosion resistance. It’s also better for marine environments because of its increased nickel and molybdenum content.
Stainless steel has been a popular material since the 20th century and has been used in numerous projects due to its versatility, flexibility, and machinability. Its composition consists of several elements, each in different proportions, which give it its distinct properties. One of the most classic comparisons between 304 and 316 stainless steel involves their different levels of carbon.
304 vs 316 Stainless Steel Properties
Both grades have excellent corrosion resistance, but 304 is considered the superior choice in some applications. 316 has a higher nickel content, which makes it more resistant to corroding by chlorine and chlorides. It also has good resistance to acid and alkalis. It is commonly used in medical devices and pharmaceutical production.
While 304 stainless steel is easier to weld, 316 is the more common choice for marine applications. The latter has an advantage when it comes to price and manufacturing complexity. 316 stainless steel is more expensive, but its corrosion resistance is higher. It’s important to choose the right material for your project.
316 has longer lifespan and higher usage life than 304. This makes it worthwhile in environments with high salt and acid content. If you are working in an environment where the steel is exposed to high acidity and corrosive elements, 316 can save you a lot of headache. However, 304 has comparable cost and longevity, and can be a good choice for industries that don’t deal with chlorides.
Stainless 316 is more resistant to acids, salt, and corrosive gases than 304. This makes it a better choice for marine applications and pulp and paper production. However, 304 stainless steel is a more economical and practical choice. The two grades can be used interchangeably for many applications.
304 is a popular material, and it contains up to 18 percent chromium. 316 is a bit more expensive, but possesses better chemical resistance. It can resist chlorides, acids, and even salt, making it an ideal choice for chemical processing. However, 316 stainless steel is more expensive per ounce.
