Difference between 304 and 202 stainless steel

If you're trying to decide between 304 and 202 stainless steel, you're not alone. These two grades are widely used but have significant differences in quality, composition, and pricing. In this blog, Crownisi—a trusted name in stainless steel door accessories—explains the key differences so you can make an informed choice whether you're buying for a kitchen, industrial setup, or architectural needs.

What Are 304 and 202 Stainless Steel Grades? 

Both 304 and 202 are austenitic stainless steels, meaning they have a face-centered cubic structure. But the major difference lies in their chemical composition.

• SS 304 belongs to the 300 series and contains higher nickel content.
• SS 202 falls under the 200 series and replaces much of the nickel with manganese and nitrogen.

Chemical Composition Comparison

Key takeaway: SS 304’s higher nickel and chromium content gives it superior corrosion resistance.

Also Read: https://www.crownisi.com/blogs/top-10-door-hinges-brands-in-india-2025

Mechanical Properties Comparison

SS 304 is more ductile, while SS 202 is slightly harder but less corrosion-resistant.

SS 304 vs 202: Which Is Better for Your Kitchen?

For kitchens, hygiene and corrosion resistance are essential.

• SS 202 is cost-effective and good for utensils and indoor use.
• SS 304 offers better rust resistance and is preferred for commercial kitchens.

Verdict: Use SS 304 for high-end and long-term kitchen projects. Use SS 202 if you’re on a tight budget.

Applications: Where Is Each Grade Used? 

• SS 304: Brewing equipment, food processing machinery, chemical containers, and architectural panels.
• SS 202: Kitchen sinks, restaurant interiors, automobile trim, railway bogeys.

Explore Crownisi’s exclusive SS 202 and SS 304 accessories tailored for kitchen and architecture.

Welding & Fabrication Differences

• SS 202 can be welded using standard fusion methods but is prone to intergranular corrosion.
• SS 304 is also weldable, and its low-carbon version (304L) solves corrosion issues.

For best results, use TIG welding with SS 304 for aesthetic finishes.

Cost Comparison: 304 vs 202

• SS 304 is more expensive due to higher nickel content.
• SS 202 is cheaper and ideal for mass-market products.

Tip from Crownisi: For long-term use and resale value, SS 304 offers better ROI.

Corrosion Resistance

• SS 304 : Excellent in coastal, high-humidity, and food-related environments.
• SS 202 : More likely to rust in moist outdoor areas.

If corrosion resistance is your top concern, choose SS 304.

How to Identify 304 vs 202 Stainless Steel

• Material Test Report (MTR) : Most accurate
• Spark Test : 304 shows reddish-orange, non-flying sparks; 202 has thicker yellow flying sparks
• Marking Check : Look for labels like ASTM A312 TP304

Final Verdict: Which Should You Choose?

Why Trust Crownisi?

• ISO-certified quality
• MTC reports available on demand
• Direct factory supply—no middlemen
• Real images, real reviews from real clients

FAQs    

Q1: Is 304 better than 202 stainless steel for home kitchens?

 Yes, due to its higher corrosion resistance.

Q2: Can I use SS 202 for outdoor applications?

 Not recommended—it may rust faster.

Q3: Is 304 stainless steel food-grade?

Yes, it’s widely used in food processing.

Q4: How do I verify the stainless steel grade before purchase?

 Ask for an MTR or check the ASTM markings.

Q5: Does 304 cost more than 202 significantly?

Yes, due to its higher nickel content.