410 stainless steel is a commonly used martensitic stainless steel whose main components are iron, carbon, chromium and a small amount of other elements.

409 stainless steel is a ferritic steel with good mechanical properties and high temperature corrosion resistance. It contains 11% chromium, which is the minimum amount required to form the passive surface film that makes stainless steel corrosion-resistant.

403 stainless steel is a martensitic stainless steel with high chromium content and low carbon content. It is commonly used in applications requiring high strength and corrosion resistance.

305 stainless steel is a common austenitic stainless steel containing chromium, nickel, and manganese. Chromium can combine with oxygen to form a dense oxide film to protect materials from corrosion. Nickel can improve the material's heat resistance and toughness while reducing its magnetism. Manganese can increase the strength and hardness of materials.

347 stainless steel is a high-temperature oxidation-resistant stainless steel material mainly composed of chromium, nickel and titanium. It is a stable material that can be used at high temperatures and can prevent corrosion and oxidation effectively.

330 stainless steel is a high temperature alloy stainless steel, also known as Incoloy 330 or UNS N08330. It mainly consists of chromium, nickel, iron and other elements, and is characterized by exceptional high temperature resistance and corrosion resistance.

317L stainless steel is a lower carbon version of 317 stainless steel, which means it has better corrosion resistance and higher creep strength at high temperatures. It contains molybdenum, nickel and chromium as main alloying elements.

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

303 stainless steel is an austenitic, easy-cutting wear-resistant acid stainles steel containing sulfur and selenium respectively. It is used in situations where easy cutting and high surface finish are required.

302 stainless steel is an austenitic stainless steel containing 18% chromium and 8% nickel. Its chemical composition depends considerably on reasonable alloy design to achieve a series of excellent properties.

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

201 stainless steel is 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.