What types of stainless steel plates do you know?

　　Many times, customers will ask what types of stainless steel plates are sold and what should be paid attention to when choosing grade, shape and size. Although there are many classifications of steel, many different grades of steel also contain different properties. These properties include physical, chemical and environmental aspects. All steel is composed of iron and carbon, with the amount of carbon and other alloys determining the properties of each grade.

　　Stainless steel plate types can be divided into cold rolling and hot rolling according to the finishing method used. Alloy steel is composed of carbon steel combined with one or more alloying elements such as manganese, silicon, nickel, titanium, copper, chromium and aluminum. These metals are added to produce special properties not found in ordinary carbon steel. Elements are added in different proportions to give the material different aspects, such as increasing hardness, improving corrosion resistance, increasing strength, improving formability, and the weldability will also change. The most important and desirable changes in alloy steel are enhanced hardenability, improved corrosion resistance, and maintenance of hardness and strength. Almost all alloy steels require heat treatment to achieve optimal performance. The main alloying element in stainless steel is chromium, which is valued for its high corrosion resistance, which is approximately 200 times that of mild steel.

　　Stainless steel plate types can be divided into the following categories. Austenitic steel, the type of stainless steel plate, accounts for the largest share of the global stainless steel market and has a wide range of uses. However, the products are rarely used in food processing equipment, kitchen utensils and medical equipment. Austenitic stainless steel is The most easily weldable stainless steel plate, austenitic stainless steel plate types can be roughly divided into three categories, ordinary chromium, nickel, manganese, chromium, nickel, nitrogen and special alloys. These metals are non-magnetic and cannot be heat treated; stainless steel plate types are iron Prime steel contains trace amounts of nickel, 12,17% chromium, less than 0.1% carbon, and other alloying elements such as molybdenum, aluminum or titanium. It has good plasticity and formability, but compared with austenite, High temperature strength is relatively poor, and the cost of some ferritic stainless steels is lower than other stainless steels. These metals are magnetic, but cannot be heat treated and can be strengthened by cold working. The chromium content in martensitic steels, which are types of stainless steel plates, ranges from 11% to 11%. 17%, with a nickel content of less than 0.4% and a carbon content of up to 1.2%. The carbon content of this hardenable steel affects forming and welding. In order to obtain useful properties and anti-cracking properties, preheating and post-weld heat treatment are required, 403, 410 , 410NiMo and 420 type martensitic stainless steel have magnetic and heat treatable properties. These stainless steels are used in knives and dental and surgical equipment; duplex stainless steel plate types are mainly used in chemical plants and pipeline applications. Duplex stainless steel contains approximately 22, 25 % chromium and 5% nickel as well as molybdenum and nitrogen. Compared with austenitic stainless steel, duplex steel has higher yield strength and better resistance to corrosion cracking; stainless steel plate type chromium-nickel stainless steel, precipitation hardening, Also containing alloy additives, such as aluminum, copper or titanium, these alloy stainless steels are hardened through solution and aging heat treatments. Tool steels contain varying amounts of tungsten, molybdenum, cobalt and vanadium, which improve the metal's heat resistance and durability, ideally , for cutting and drilling.