202 stainless steel is one of the 200 series of stainless steel, which is a stainless steel with low nickel content and high manganese content, because it is a stainless steel developed to save nickel, so its nickel content is relatively low.

304L stainless steel is remarkably similar to 304 stainless steel in their chemical composition. but there is one key difference. In grade 304 stainless steel, the maximum carbon content is set at 0.08%, whereas grade 304L stainless steel has a maximum carbon content of 0.03%. This is why the “L” in 304L can be interpreted as extra-low carbon.

304 stainless steel highly stands out in terms of corrosion resistance, heat resistance, low temperature strength and mechanical properties, being one of the most widely used types of stainless steel. In addition, it has exceptional hot-workability such as stamping and bending, without leaving heat treatment hardening phenomenon.

The stainless steel plate has a smooth surface, high plasticity, toughness and mechanical strength, and is resistant to corrosion by acids, alkaline gases, solutions and other media. 

316L stainless steel has a lower proportion of carbon in its composition. To qualify as 316L stainless steel, the amount of carbon cannot exceed 0.03%. This decreases the risk of carbon precipitation, making it a better option for welding to ensure maximum corrosion resistance.

316 stainless steel also contains 2-3% molybdenum, in addition to iron, chromium and nickel. The addition of molybdenum significantly improves the performance of 316 stainless steel in certain corrosive environments, especially those containing chlorides. 316 stainless steel is more commonly used in situations requiring higher corrosion resistance.

440C stainless steel is a high carbon martensitic stainless steel. It has high strength, moderate corrosion resistance, and good hardness and wear resistance. Grade 440C is capable of attaining, the highest strength, hardness and wear resistance of all the stainless alloys after heat treatment

201 stainless steel generally refers to 201 stainless steel and acid resistant steel. 201 stainless steel refers to the steel that is resistant to the corrosion of weak media such as atmosphere, steam and water, while acid resistant steel refers to the steel that is resistant to the corrosion of chemical corrosive media such as acid, alkali and salt.

301 stainless steel is an austenitic stainless steel with a chemical composition of 17 percent chromium and 7 percent nickel, which provides good strength and ductility when cold worked. Besides, it also has excellent corrosion resistance properties.

302 stainless steel is an austenitic stainless steel that has 18% chromium and 8% nickel. Its chemical composition relies heavily on reasonable alloy design to achieve a series of excellent properties.

321 stainless steel is an austenitic stainless steel that has excellent corrosion resistance at room temperature, as well as good high-temperature strength and creep resistance.

330 stainless steel is a high temperature alloy stainless steel , also known as Incoloy 330 or UNS N08330. It is mainly composed of chromium, nickel, iron and other elements, and has excellent high temperature resistance, high strength and corrosion resistance.