304 vs. 316 Stainless Steel​: How Different Are They?

Do you know the difference between 304 vs. 316 stainless steel?  But, do you know how they’re similar? In this blog, we’ll be all about identifying 304 stainless steel and 316 stainless steel.

So, by the end of this article, you’ll know and be able to easily identify what 304 and 316 stainless steel is, where they got different, how they’re the same, where they used–literally almost everything!

ما هو الفولاذ المقاوم للصدأ 304؟

مصدر: Polycase

304 stainless steel is one of the most commonly used grade and type of stainless steel. It is an austenitic stainless steel alloy. The 304 stainless steel type often comes with 8 percent nickel and 18 percent chromium.

They’re known to have excellent corrosion resistance, heat resistance, and machinability.

ملحوظة: 304 stainless steel is also what’s known as 18/8 stainless steel.

ما هو الفولاذ المقاوم للصدأ 316؟

مصدر: Champak Steel

316 stainless steel, like 304 stainless steel, is also a common alloy used for a wide array of applications. However, unlike 304 stainless steel, 316 also contains significant amounts and levels of molybdenum, around 2 to 3 percent by weight.

And while 304 is a common austenitic alloy, 316 is the go-to alloy for marine applications because of the heightened corrosion resistance and strength.

Now we know the main difference between them. So, let’s take a look at each of them in-depth and find out the little details that make them different.

304 vs. 316 Stainless Steel: What Makes Them Different?

Stainless steel, per se, is widely used for its durability. However, it’s good to think that not all grades are the same. The most common grades, 304 and 316, have key differences that affect performance in different environments.

Check this video out from Reliance Foundry dictating and differentiating 304 stainless steel from 316 stainless steel.

While both contain iron, chromium, and nickel, they have too few differences because of their unique compositions. So, let’s take a look at the differences these two stainless steel grades have so you know them at the top of your head!

تعبير

The biggest and probably the most common difference between 304 and 316 stainless steel is the addition of molybdenum in 316.

This element adds corrosion resistance, especially against chlorides and acidic environments. Both alloys contain at least 18% chromium and 8% nickel, but 316 typically has 2-3% molybdenum, while 304 lacks this component.

ملحوظة: This distinction alone is what makes 316 stainless steel the preferred choice for extreme conditions.

ملكيات

Of course, having a difference in their composition would definitely have a difference in their properties, as well. Although both grades are robust, long-lasting, and rust-resistant, 316 works better in challenging conditions.

Due to its resistance to pitting and crevice corrosion, it is perfect for chemical and marine applications. In contrast, 304 is easier to fabricate and more reasonably priced, making it appropriate for widespread use. It also has a higher melting point that 316 stainless steel!

Both are very heat resistant, but 316 holds up better when exposed to corrosive materials for longer periods.

التطبيقات

JC Casting made all our lives easier! They made and created this simple graphic to help us better understand the primary differences and similarities of 304 and 316 stainless steel.

مصدر: JC Casting

304 stainless steel is frequently found in home appliances, car trim, and kitchenware. It is a great option for mild outdoor and interior environments because to its price and ease of welding.

On the other hand, 316 is the preferred material for chemical processing facilities, medical equipment, and maritime buildings. It can tolerate exposure to severe chemicals and saltwater due to its exceptional corrosion resistance.

So, as you can see, there’s a big difference in terms of how they’re used and what industries they’re able to serve.

سعر

And of course, let’s talk about rates and prices. We now all know that 316 contains molybdenum, so, it would just naturally be more expensive. 316 costs more than 304 stainless steel – because of the added molybdenum.

The price difference, however, varies depending on market conditions and raw material costs. While 304 is more budget-friendly for general applications, investing in 316 makes sense for projects requiring long-term durability in harsh environments.

Not to mention the fact that 316 stainless steel is applicable to various industries that using 304 might not be good for.

Where to Get High-Quality Stainless Steel

There’s no question that you’ll be able to buy 304 or 316 stainless steel anywhere worldwide. However, what you need to make sure of is the quality that you’ll get.

Many manufacturers would not tell you how they make or source their 304 or 316 stainless steel. Although most of its process isn’t really important, it’s imperative to know how it’s done so you know what to expect.

Here with us at HDC, we’re transparent in all the processes and manufacturing efforts we do.

Why HDC is Your Partner For Custom Stainless Steel Products

Stainless steel types have varying degrees of effectiveness and durability. While it’s common knowledge that not all stainless steels are made equally, you can be sure that we here at HDC are able to provide the best and highest quality of stainless steel for whatever your custom project is.

Our stainless steels aren’t just limited to what you know of them. We offer a vast plane of stainless steels, specific to what you need!

You will never experience any shortage of metals or alloys when you work with us! Just let us know what you need and we’ll be ecstatic to give you the assistance you’re looking for!