Specializing in the production of various stainless steel pipes, plates, coils, rods, pipe fittings, high nickel alloy steel products, high temperature resistant products
What is the difference between 409 and 430 stainless steel?
409 stainless steel plate has poor thermal conductivity and low elongation compared to ordinary low-carbon steel, which leads to large deformation force required for shearing and bending; 321 stainless steel sheet has a strong rebound tendency compared with carbon steel when bending; stainless steel plate has a lower elongation than carbon steel, so the bending angle R of the workpiece should be greater than that of carbon steel when bending, otherwise there is a possibility of cracks.
Aug 29,2024
409 stainless steel plate has poor thermal conductivity and low elongation compared to ordinary low-carbon steel, which leads to large deformation force required for shearing and bending; 321 stainless steel sheet has a strong rebound tendency compared with carbon steel when bending; stainless steel plate has a lower elongation than carbon steel, so the bending angle R of the workpiece should be greater than that of carbon steel when bending, otherwise there is a possibility of cracks. Because the hardness of stainless steel plate is high and the cold work hardening effect is obvious, when selecting bending tools, tool steel with heat treatment hardness of more than 60HRC should be selected, and its surface roughness should be one order of magnitude higher than that of carbon steel bending tools.
409 stainless steel has poor tempering stability. When carbon steel is quenched and tempered, a lower tempering temperature should be used to ensure higher strength, so the toughness of the steel is low; in order to ensure better toughness, the strength is low when a high tempering temperature is used, so the comprehensive mechanical performance level of carbon steel is not high. After adding alloy elements to steel, the basic components of steel, iron and carbon, will interact with the added alloy elements. The purpose of alloying steel is to improve the structure and function of steel by using the interaction between alloying elements and iron and carbon and the influence on the iron-carbon phase diagram and the heat treatment of steel.
430 is a ferritic stainless steel. 430 16Cr is a representative steel type of ferritic steel. It has low thermal expansion coefficient, excellent formability and oxidation resistance. Organic juice (such as vegetables, noodle soup, sputum, etc.) adheres to the surface of 430 stainless steel plate, which will form organic acid in the presence of water and oxygen. Over time, organic acid will cause certain corrosion to the surface of 430 stainless steel plate. Acid, alkali, and salt substances (such as alkaline water and lime water splashing when decorating walls) adhere to the surface of 430 stainless steel plate, which will cause local corrosion. 430 stainless steel plate in polluted air (such as atmosphere containing a large amount of sulfide, carbon oxide, nitrogen oxide), encounter condensed water, forming sulfuric acid, nitric acid, acetic acid liquid points, causing chemical corrosion. All of the above situations may cause the destruction of the protective film on the surface of 430 stainless steel and cause rust. Then let's take a look at the rust prevention methods of 430 stainless steel plate. It is recommended to clean and scrub the surface of 430 stainless steel plate in time to remove attachments and eliminate external factors that cause rust; choose a clean, dry and ventilated warehouse to place 430 stainless steel plate.
430 stainless steel plate application areas:
1. 430 stainless steel is mainly used for architectural decoration, fuel burner parts, household appliances, and home appliance parts.
2. Add 430F, a steel grade with easy-to-cut properties, to 430 steel, mainly used for automatic lathes, bolts and nuts, etc.
3. Add Ti or Nb to 430 steel and reduce C content to become 430LX, which improves the processing performance and welding performance. It is mainly used for hot water tanks, hot water supply systems, sanitary appliances, durable household appliances, bicycle flywheels, etc.
The specifications of 430 stainless steel plates are divided into the following categories according to thickness:
Thin plates: 0.3-4.0mm thick Small plates: 1m*2m Large plates: 1.22m*2.44m
Thick plates: 8-100mm thick Can be sawed at will
430 stainless steel plates have good thermal conductivity and mechanical properties. They are better for architectural decoration, fuel burner parts, household appliances, home appliance parts, etc.
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