QN1803 Stainless Steel vs 304: What’s the Difference?

Everyone is familiar with 304, but how much do we know about QN1803?

This blog explores the critical differences between QN 1803 stainless steel and 304 stainless steel—two similar materials in the industry. However, due to the trace difference in various chemical compositions, the two kinds of stainless steel have different properties. Each has unique properties and applications, making them suitable for various uses. Whether you’re in construction, manufacturing, or any sector requiring durable and corrosion-resistant materials, understanding these differences can help you make an informed decision.


Price Range

Generally, QN1803 stainless steel is more cost-effective than 304 stainless steel. This price difference is mainly due to the low nickel content in QN1803 stainless steel. 304 has a nickel content of 8, while QN1803 contains only 2.8, which is a considerable cost factor due to nickel’s status as a precious metal. Market prices place 410 stainless steel at approximately $2,900 per ton, while 304 stainless steel typically costs around $3,300 per ton. It’s important to note that these prices are approximate and subject to change based on factors like material costs, exchange rates, and shipping expenses. Always refer to the latest quotations provided by Aoxing Mill for accurate pricing.

Chemical Composition

Grade Element C Si Mn P S Cr Ni Mo Cu N PREN
QN1803 T/CISA 046- 2020 ≤ 0.100 ≤ 0.10 4.00 ~ 8.00 ≤ 0.050 ≤ 0.005 17.50 ~ 19.50 2.00 ~ 3.50 ≤ 0.60 1.00 ~ 3.50 0.200 ~ 0.300
Typical value 0.075 0.30 5.50 0.030 0.001 18.15 3.30 0.12 1.05 0.230 19.90
304 ASTM A240 ≤ 0.070 ≤ 0.75 ≤ 2.00 ≤ 0.045 ≤ 0.030 17.50 ~ 19.50 8.00 ~ 10.50 - - ≤ 0.100
Typical value 0.050 0.40 1.00 0.030 0.001 18.10 8.02 0.02 0.10 0.045 18.52

Mechanical Property

Grade Thick
RMMPa Rp0.2Mpa EIA
QN1803 0.5 747 420 51.6 215
304 0.5 670 290 58.5 165

Application Range

QN1803 stainless steelhas high corrosion resistance and high strength, suitable for welding, wear-resistant, strong acid and other products, such as welding stainless steel pipe, elevator decorative sheet, floor drain, trash can and so on.

304 stainless steel has always maintained good corrosion resistance, not easy to rust performance, suitable for some food and medical related products with higher safety requirements, such as food packaging cans, stainless steel bowls, medical tweezers and s

Choosing Between QN1803 and 304 Stainless Steel

Understanding the specific difference between the two kinds of stainless steel has more advantages for practical application selection. Although both have a wide range of applications, QN1803 is more used in areas requiring high strength and high corrosion resistance, while 304 stainless steel is used in a wider range of industrial, household and life fields.

For more detailed information on our stainless steel offerings and to explore which type is right for your next project, please visit our   QN1803 stainless steel product page and  304 stainless steel product page  and  at Aoxing .


Let us help you make the best choice to ensure the success of your projects with high-quality materials tailored to your specific requirements.

Post time: Jun-26-2024

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