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410 stainless steel chemical composition

Its main chemical composition is iron (Fe), chromium (Cr), chromium content is generally 11.5%-13.5%. Chromium plays a key role in stainless steel, which can promote the formation of a dense chromium oxide protective film on the steel surface, which gives 410 stainless steel basic corrosion resistance, so that it can resist erosion in a certain degree of atmospheric environment, fresh water and weak alkaline media. In addition, it usually contains a small amount of carbon (C), manganese (Mn), silicon (Si) and other elements, of which the carbon content is relatively high compared with some other stainless steels, generally 0.08%-0.15%, the higher carbon content helps to improve the hardness and strength of steel, but to a certain extent, it will also affect its corrosion resistance and toughness.

410 stainless steel performance characteristics

Good mechanical properties: with high strength and hardness, after proper heat treatment, its tensile strength can reach 520MPa-750MPa, yield strength is about 345MPa-520MPa, Brinell hardness (HB) can reach about 170-200. This makes it excellent at withstanding mechanical loads and suitable for the manufacture of parts that require certain wear and pressure resistance, such as tools, valves, pump shafts, etc.

Certain corrosion resistance: although compared with austenitic stainless steel (such as 304, 316, etc.), the corrosion resistance of 410 stainless steel is relatively weak, but in non-corrosive environments, such as ordinary indoor atmosphere and dry outdoor environment, it can maintain a good state with its own chromium oxide protective film, so as not to rust too quickly. However, in harsh corrosive environments such as high salinity, strong acidity or strong alkalinity, its protective capacity is limited and additional protective measures, such as coating protection, are required.

Heat treatment strengthening characteristics: 410 stainless steel has unique heat treatment strengthening characteristics, and its mechanical properties can be significantly adjusted by heat treatment processes such as quenching and tempering. Quenching can make the steel quickly cool, form martensitic structure, greatly improve the hardness and strength; Tempering is carried out after quenching, which is used to eliminate quenching stress, adjust the balance between toughness and hardness, and meet the needs of different working conditions on the performance of parts.

410 Processing properties of stainless steel

Cutting performance: cutting performance is good, due to its moderate hardness, in the process of turning, milling, drilling and other cutting, the tool wear is relatively small, can be more smoothly processed out of various shapes of parts. However, the cutting parameters need to be reasonably selected according to its heat treatment state during processing to ensure processing accuracy and surface quality.

Welding performance: Welding performance is relatively general, in the welding process, due to the rapid cooling of the heat affected zone, it is easy to form hard and brittle martensitic structure, resulting in the toughness of the weld and the surrounding area, and the risk of cracking. Therefore, when welding 410 stainless steel, it is necessary to use the appropriate welding process, such as preheating, selecting the appropriate welding materials, controlling the welding current and speed, etc., to optimize the performance of the welded joint.

410 stainless steel applications

Machinery manufacturing: widely used in the manufacture of all kinds of mechanical parts, such as nuts, bolts, shaft parts, gears, etc., using its high strength and good machinability, to meet the mechanical transmission, connection, support and other functional needs, to ensure the stable operation of mechanical equipment.

Tool industry: Often used to make some low-end tools, such as kitchen tools, hand tools and so on. Its high hardness makes its blade sharp and has a certain wear resistance, which is acceptable in daily cutting use scenarios, but its durability and corrosion resistance need to be improved compared with high-end tool materials.

Valves and pumps: In the valve core, valve seat and pump impeller, shaft and other components have many applications. Valves and pumps usually need to withstand a certain amount of pressure, wear and medium corrosion, 410 stainless steel can rely on its own performance, in general conditions to ensure the normal work of these parts, control the fluid on and off and transport.