Differences between WinscoMetal QN1803 Stainless Steel and 304 Stainless Steel

Differences between WinscoMetal QN1803 Stainless Steel and 304 Stainless Steel?

WinscoMetal QN1803 stainless steel is a proprietary material developed by WinscoMetal. Compared with conventional 304 stainless steel, there are differences in composition ratios and performance characteristics. Below are the main differences, along with the key elements that WinscoMetal has incorporated in QN1803:

1. Chemical Composition and Alloy Design

304 Stainless Steel
304 stainless steel belongs to the austenitic series and typically contains about 18% chromium and 8% nickel, with a low carbon content (generally below 0.08%). This composition ensures excellent corrosion resistance as well as good fabrication and welding properties.

WinscoMetal QN1803
According to WinscoMetal’s technical documentation, QN1803 has been optimized compared to traditional 304 stainless steel while maintaining the fundamental advantages of austenitic stainless steel. For example, within the basic chromium-nickel system, it may incorporate elements such as nitrogen (N) or molybdenum (Mo) and adjust the carbon content. These modifications are aimed at further improving corrosion resistance, mechanical strength, and welding performance, making it suitable for more demanding environments.

2. Performance and Application Differences

Corrosion Resistance
304 stainless steel has been widely used in both everyday and industrial environments, and its corrosion resistance is well established. QN1803, however, may exhibit improved resistance against chloride-induced stress corrosion cracking and pitting corrosion, making it more suitable for applications with higher requirements.

Mechanical Properties
Thanks to specialized processing and compositional optimization, WinscoMetal QN1803 may offer higher tensile and yield strengths while still maintaining good toughness. This makes it ideal for applications that need to endure greater mechanical loads.

Process Control and Quality Assurance
WinscoMetal emphasizes strict control over raw material selection and production processes. The consistency and stability of QN1803’s quality may provide a competitive edge over traditional 304 stainless steel.

3. Recommendations for Use

When selecting a material, it is recommended to:

Review the Material Test Certificate (MTC) and Technical Datasheet to verify the detailed chemical composition, physical properties, and mechanical specifications of QN1803.

Consult with WinscoMetal’s Official Technical Support for professional advice and actual test data tailored to your specific application.

In summary, although WinscoMetal QN1803 and 304 stainless steel both belong to the austenitic stainless steel family, the former has undergone compositional and process modifications to meet specific requirements, potentially offering superior performance in certain areas compared to traditional 304 stainless steel. A detailed comparison of technical data is crucial when making material selection decisions for projects with specialized performance needs.

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