What is the thickness of 304 stainless steel?

Source:UAITE STEEL CO., LTD    Time:23 December 2020

Back to list

  Type 304L is the low carbon version of Stainless steel 304. It is used in heavy gauge components for improved weldability. Some products such as plate and pipe may be available as”dual certified”material that meets the criteria for both 304 and 304L.

  The article contains following:

  1,What is the thickness of stainless steel in common

  2,What is special of 304 stainless steel in thick

  3,Why is the 304 stainless steel made in those thicknesses

  1,What is the thickness of stainless steel in common

  ST37 or S235JR in 4-metre sheets are commonly used, but are generally only available in 3 mm thickness. St52 or S355J2 are not available in sheet format and are only available in 3 mm. Sheet can be unrolled from a coil for larger for larger pieces, although this also depends on the material quality. Sometimes you have to take a minimum 5 tonnes and sometimes this can only be in sheets.Stainless steel precision strip refers to cold-rolled stainless steel strip with thin specifications and strict requirements on dimensional accuracy, flatness, smoothness and surface quality. The thickness is generally 0.01-0.5mm, and the one below 0.05mm is also called stainless steel foil. The appearance is similar to the tin foil we often use (the thickness of tin foil is generally below 0.2mm). Stainless steel precision strip is ultra-thin stainless steel, but it is only one-sided to understand precision strip from the thinness of the product. Precision strip steel can be graded for precision control. It pays attention to stable quality, high precision, and high precision requirements in mechanical and mechanical properties.

  Internationally, the thickness accuracy requires that the difference between positive and negative be no more than 1 micron, and the width accuracy requires no more than 0.1mm; the surface quality must meet the needs of different users, such as 2B surface with roughness Ra≤0.16mm, roughness Ra≤0.05 mm BA surface or other special surfaces; the grain size should be uniform, generally controlled at 7.0-9.0; for hard products, the strength performance should be uniform, and the hardness fluctuation should be between ±5-10Hv. In addition, there are higher requirements for straightness and edge quality.

  2,What is special of 304 stainless steel in thick

  304 stainless steel is available from 0.40mm-120mm, below 3mm (thickness), the width is generally 1000mm, 1220mm, and a small amount of 1500mm. For example, according to the thickness of 0.8mm, it is expressed as: 0.8 (thickness) * 1220 (width) * 2440 (length) The width of 3mm or more is generally 1245mm. 1500mm, 1530mm, 1800mm, 2000mm, and the length is not limited. Normally it is 6000mm, and it can be fixed. Expressed as 6mm: 6.0*15000*6000. Usually said to be 0.8 (that is, the thickness is 0.8mm), 6 (that is, the thickness is 6mm). Most of the thickness is the difference, the small tolerance board of 3mm or more, the thick board is also available, and the quantity is small.

  3,Why is the 304 stainless steel made in those thicknesses

  304 stainless steel plate is not only used for conveying fluids and powdered solids, exchanging heat, and manufacturing mechanical parts and containers, it is also an economical steel. The use of steel plates to manufacture building structure grids, pillars and mechanical supports can reduce weight, save metal by 20-40%, and realize factory mechanized construction. (Tianjin Steel Plate Company’s processing workshop adopts a steel mesh frame structure, which actually saves 42.9% of steel.) The use of 304 stainless steel to manufacture highway bridges can not only save steel, simplify construction, but also greatly reduce the area of the protective layer, saving investment and maintainance fee. Therefore, any other type of steel can not completely replace 304 stainless steel plate, but 304 stainless steel plate can replace some profiles and bars. 304 stainless steel plate has a great relationship with the development of the national economy and the improvement of human life quality, far better than other steel. 304 stainless steel is inseparable from people's daily appliances, furniture, water supply and drainage, gas supply, ventilation and heating facilities, to the manufacture of various agricultural machinery, the development of underground resources, the guns, bullets, missiles, and rockets used in national defense and aerospace. board.