Introduction to Raw Materials and Characteristics of Stainless Steel Mesh

Stainless steel mesh is a product made by weaving stainless steel wire into a mesh structure using specialized mechanical equipment. It finds applications in various industries, such as mud mesh in the petroleum industry, screen mesh in the chemical fiber industry, acid washing mesh in the electroplating industry, and gas and liquid filtration for media separation. The raw material used for weaving stainless steel mesh is stainless steel wire, which undergoes annealing treatment. Therefore, stainless steel remains the primary raw material for stainless steel mesh. Those familiar with stainless steel know that it comes in different types, including 316 stainless steel, 316L stainless steel, 304 stainless steel, 201 stainless steel, and more. Today, we will focus on 316 stainless steel and 316L stainless steel. 

316 stainless steel is a type of stainless steel that contains molybdenum and has a wide range of applications. It offers good resistance to chloride corrosion, making it suitable for use in harsh natural environments, such as marine environments. The carbon content of 316L stainless steel is 0.03, allowing it to be used in applications requiring corrosion resistance where annealing after welding is not possible. In summary, 316L stainless steel exhibits better corrosion resistance than 316 stainless steel and can be used in various acidic or alkaline environments.

Now, let's compare their high-temperature resistance performance. 316 stainless steel demonstrates good oxidation resistance in intermittent use below 1600 degrees Celsius and continuous use below 1700 degrees Celsius. It is not recommended to use 316 stainless steel continuously within the temperature range of 800-1575 degrees Celsius. However, when used continuously outside this temperature range, it exhibits good heat resistance. 316L stainless steel offers better resistance to carbide precipitation than 316 stainless steel and can be used within the aforementioned temperature range. The annealing process for 316L stainless steel involves heating it to a temperature range of 1850-2050 degrees Celsius, followed by rapid annealing and cooling.

Next, let's discuss their welding performance. 316 stainless steel has excellent welding performance, and all standard welding methods can be used. When welding, 316Cb, 316L, or 309Cb stainless steel filler rods or welding rods can be used depending on the intended purpose. To ensure corrosion resistance, the welded section of 316 stainless steel needs to undergo post-weld annealing treatment. On the other hand, if 316L stainless steel is used, there is no need for post-weld annealing treatment.