304 stainless steel and 304S stainless steel difference.

304 stainless steel and 304S stainless steel mainly have subtle differences in chemical composition, processing performance and application scenarios. Here are the main differences:

1. Chemical composition
304S stainless steel is an improved version of 304 stainless steel, optimized for the content of certain specific elements.

304 stainless steel: the main components are chromium (Cr, 18-20%) and nickel (Ni, 8-10.5%), carbon content ≤0.08%.
304S stainless steel: May be slightly adjusted in carbon content, silicon (Si), manganese (Mn) or other trace elements to enhance specific properties.
2. Corrosion resistance
Due to the adjustment of trace elements, 304S May have better performance in certain corrosive environments, such as high temperature or acidic environments.

3. Mechanical properties
304S stainless steel may be slightly improved in tensile strength, toughness or hardness, especially under high temperature or cold working conditions.

4. Processing performance
Welding performance: Both have good welding performance, but the 304S May be more suitable for some specific welding processes, reducing the risk of hot cracking.
Formability: The cold working performance of 304S May be slightly better than that of ordinary 304, which is suitable for the processing of complex parts.
5. Application Scenarios
304 stainless steel: commonly used in daily necessities (such as tableware, kitchenware), chemical containers, etc.
304S stainless steel: More suitable for use in scenarios requiring higher corrosion resistance or strength, such as chemical equipment, Marine facilities or high temperature environments

Gavin

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Gavin@huissmetal.com