- Introduction of Stainless Steel Plate
Stainless steel plate is generally the general name of stainless steel plate and acid-resistant steel sheets. Coming out at the beginning of this century, the development of stainless steel plates has laid an important material and technical foundation for the development of modern industry and technological progress. There are many types of stainless steel plates and their performances are different. It has gradually formed several categories during the development process. According to the structure, it is divided into four categories: austenitic stainless steel sheet, martensitic stainless steel sheets (including precipitation hardening stainless steel sheet), ferritic stainless steel sheets, and austenitic and ferritic duplex stainless steel sheets. The main chemical components or some characteristic elements in steel sheets are classified into chrome stainless steel plates, chrome nickel stainless steel sheets, chrome nickel molybdenum stainless steel sheets, and low carbon stainless steel sheets, high molybdenum stainless steel sheets, and high-purity stainless steel sheet.According to the performance characteristics and uses of steel sheets, they are divided into nitric acid resistant stainless steel sheet, sulfuric acid resistant stainless steel plate, pitting resistant stainless steel sheets, stress corrosion resistant stainless steel sheets, and high-strength stainless steel sheets. According to the functional characteristics of steel sheets, they are classified into low temperature stainless steel sheet, non-magnetic stainless steel sheets, free-cutting stainless steel sheets, and superplastic stainless steel sheets. The commonly used classification method is based on the structural characteristics of the steel sheets, the chemical composition of the steel plate, and the combination of the two. Generally divided into martensitic stainless steel plates, ferritic stainless steel plates, austenitic stainless steel sheets, duplex stainless steel plates and precipitation hardening stainless steel plates, etc. or divided into two categories: chromium stainless steel plates and nickel stainless steel plates. Wide range of uses Typical applications: heat exchangers for pulp and papermaking equipment, mechanical equipment, dyeing equipment, film processing equipment, pipes, materials for buildings in coastal areas, etc.
- The surface of the stainless steel plate is smooth.Stainless steel sheet has high plasticity, toughness and better mechanical strength. Stainless steel sheet is resistant to corrosion by acids, alkaline gases, solutions and other media. It is an alloy steel that does not rust easily, but it is not absolutely rust-free.
- Performance High temperature oxidation resistance: Stainless steel sheet have high temperature oxidation resistance, but the oxidation rate will be affected by inherent factors such as the exposed environment and product form.
Corrosion resistance: Stainless steel plate has the ability to withstand general corrosion similar to the unstable Ni-Cr alloy 304. Prolonged heating in the chromium carbide temperature range may affect alloys 321 and 347 in harsh corrosive media. Mainly used in high temperature applications. High temperature applications require strong anti-sensitization of the material to prevent intergranular corrosion at lower temperatures.
Physical properties: The total heat transfer coefficient of a metal depends on other factors besides the thermal conductivity of the metal. In most cases, the heat dissipation coefficient of the film, the scale and the surface condition of the metal. Stainless steel keeps the surface tidy, so its heat transfer is better than other metals with higher thermal conductivity.
Stainless steel sheet technical standards: stainless steel plate corrosion resistance, bending workability and toughness of welded parts, and high-strength stainless steel sheet with excellent stamping workability of the welded parts and its manufacturing method. Specifically, it contains C: 0.02% or less, N: 0.02% or less, Cr: 11% or more and less than 17%, appropriate content of Si, Mn, P, S, Al, Ni, and satisfies 12≤Cr Mo 1.5Si≤ 17. Stainless steel sheets with 1≤Ni 30 (CN) 0.5 (Mn Cu) ≤4, Cr 0.5 (Ni Cu) 3.3Mo≥16.0, 0.006≤C,N≤0.030 are heated to 850 ～ 1250 ℃, and then are carried cooling heat treatment at the above cooling rate. In this way, it can become a high-strength stainless steel plate with a martensitic structure with a volume fraction of 12% or more, high strength of 730 MPa or more, corrosion resistance and bending workability, and toughness in the welding heat affected zone. Reusing Mo, B can significantly improve the stamping performance of welded parts.4.The corrosion resistance of the stainlesssteel sheet mainly depends on its alloy composition (chromium, nickel, titanium, silicon, aluminum, manganese, etc.) and its internal structure. The main role is the chromium element. Chromium has high chemical stability.It can form a passivation film on the surface of steel and isolate the metal from the outside world.It protects the steel sheet from oxidation and increase the corrosion resistance of the steel sheets. After the passivation film is destroyed, the corrosion resistance decreases.
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