How to Tell the Difference Between SS 304, SS 316, and SS 202

Stainless steel is everywhere like kitchens, railings, tanks, furniture. But did you know there are different types of stainless steel, and each has a different purpose?

The three most common ones in India are:

• SS 304

• SS 316

• SS 202

They may look the same, but they are very different in quality, strength, and how long they last.

What is Stainless Steel, Really?

Stainless steel is basically steel mixed with chromium and other elements to prevent rust. That shiny surface you see is thanks to chromium, which reacts with oxygen in the air and forms a protective layer.

But not all stainless steel is created equal. Depending on the elements added, like nickel, molybdenum, or manganese, the steel performs differently.

Why It’s Important to Know the Difference

Choosing the wrong grade can lead to:

• Rusting

• Short product life

• Waste of money

• Unsafe use in kitchens or buildings

So, let’s understand what makes each steel grade unique and how you can tell them apart.

SS 304 – The Most Common One

• Has good nickel (around 8%) and chromium (around 18%)

• Very good at fighting rust

• Safe for kitchen and food use

• Used in: utensils, water tanks, railings, hospital tools

• Not magnetic

SS 316 – Best for Harsh Environments

• Has more nickel (around 10%) and molybdenum (around 2-3%)

• Extra strong against saltwater and chemicals

• Used near the sea, in hospitals, labs

• Doesn’t rust easily, even in tough conditions

• Not magnetic

SS 202 – Budget-Friendly Option

• Has less nickel and more manganese

• Cheaper than 304 and 316

• Rusts faster, not good for coastal areas

• Used for indoor railings, furniture

• Slightly magnetic

How to Identify Each Grade

Here are a few simple tricks to tell them apart:

1. Ask for a Test Certificate

Always ask the seller for a Material Test Certificate (MTC). It shows the exact chemical makeup of the steel.

2. Do a Salt Water Test (optional)

Dip a small sample in salty water for 1-2 days.

• SS 316 stays shiny

• SS 304 may get small spots

• SS 202 often rusts

3. Magnet Test

• SS 304 & SS 316: Not magnetic

• SS 202: Slightly magnetic

4. Check the Price

If the price seems too low, it could be SS 202.
SS 316 is usually the costliest. SS 202 is the cheapest.

Quick Guide to When to Use What

Be Careful of Fake Sales

• Some sellers sell SS 202 as SS 304

• Always buy from trusted suppliers

• Ask for proof and check for brand markings

Conclusion

Steel is something we use in buildings, homes, hospitals, kitchens , basically, everywhere. But not all steel is created equal.

SS 304 gives you great durability and value.
SS 316 is your best bet for tough, salty, or chemical-heavy environments.
SS 202 works well when you’re looking for looks on a budget , but don’t expect it to last as long or resist rust as well.

At the end of the day, it’s about matching the right material to the right job.

So next time you’re buying stainless steel — ask questions, check the grade, and make an informed choice.