Key Characteristics of Stainless Steel 1. Weldability 2. Corrosion Resistance 3. Polishing Performance 4. Heat Resistance Overall, understanding these characteristics is essential for selecting the right type of stainless steel for different applications, ensuring both functionality and long-term performance. Pvc Sports Flooring,Floor For Badminton Court,Table Tennis Court Flooring,Sports Flooring For Dance Room Jiangsu Ruidong Sports Technology Co., Ltd , https://www.cnruidongsports.com
Stainless steel is widely used in sculptures and various industrial applications. The welding performance required varies depending on the product's purpose. For example, Class I tableware typically doesn’t need high weldability, and some pot manufacturers even avoid welding. However, many products, such as Class II tableware, thermos flasks, steel pipes, water heaters, and dispensers, require raw materials with excellent welding properties to ensure structural integrity and durability.
Corrosion resistance is a crucial property for most stainless steel products. Items like Class I and II tableware, kitchen utensils, water heaters, and dispensers must be able to withstand corrosion over time. Some international buyers conduct specific tests to evaluate this. One common method involves using a sodium chloride (NaCl) solution, heating it to boiling, and then pouring it over the product. After a certain period, the solution is removed, the product is washed and dried, and its weight loss is measured to determine the level of corrosion. Note: During testing, if the product is polished, the iron content from the abrasive material can cause rust spots on the surface, which may affect the results.
The polishing quality of stainless steel depends on several factors:
â‘ Surface defects in the raw material, such as scratches, pitting, or improper pickling, can significantly impact the final finish.
â‘¡ Material hardness also plays a key role. If the material is too soft, it may not polish well, leading to poor BQ (bright quality) performance. On the other hand, if the hardness is too high, it can lead to issues like an orange peel effect during deep drawing, which also affects the appearance and quality.
â‘¢ In deep-drawn parts, areas with significant deformation may develop small black spots or ridges, which can reduce the overall BQ performance and make the surface less smooth and visually appealing.
Heat resistance refers to the ability of stainless steel to maintain its mechanical and physical properties at high temperatures. This makes it suitable for use in environments where heat exposure is common. Carbon is a critical element in austenitic stainless steels, as it strongly promotes and stabilizes the austenite structure. Its effect is about 30 times greater than that of nickel. As an interstitial element, carbon enhances the strength of austenitic stainless steel through solid solution strengthening. Additionally, it improves the stress corrosion resistance of these steels, especially in highly concentrated chloride environments like a 42% magnesium chloride (MgClâ‚‚) boiling solution.