Introduction to Stainless Steel Plate

　　Product Introduction

　　Stainless steel plate is generally the general term for stainless steel plate and acid resistant steel plate. At the beginning of this century, the development of stainless steel plates laid an important material and technological foundation for the development of modern industry and technological progress. There are many types of stainless steel plates with different properties, and they have gradually formed several major categories in the development process. According to organizational structure, it can be divided into four categories: austenitic stainless steel plate, martensitic stainless steel plate (including precipitation hardening stainless steel plate), ferrite stainless steel plate, and austenitic plus ferrite dual phase stainless steel plate? Classified according to the main chemical composition or some characteristic elements in the steel plate, it can be divided into chromium stainless steel plate, chromium nickel stainless steel plate, chromium nickel molybdenum stainless steel plate, low-carbon stainless steel plate, high molybdenum stainless steel plate, high purity stainless steel plate, etc. According to the performance characteristics and usage of steel plates, they are classified into nitric acid resistant stainless steel plates, sulfuric acid resistant stainless steel plates, pitting resistant stainless steel plates, stress corrosion resistant stainless steel plates, high-strength stainless steel plates, etc. According to the functional characteristics of steel plates, they are classified into low-temperature stainless steel plates, non-magnetic stainless steel plates, easy cutting stainless steel plates, superplastic stainless steel plates, etc. The commonly used classification method is based on the organizational structure characteristics and chemical composition characteristics of steel plates, as well as a combination of the two methods. Generally, it is divided into martensite stainless steel plate, ferritic stainless steel plate, austenitic stainless steel plate, duplex stainless steel plate and precipitation hardening stainless steel plate, or into chromium stainless steel plate and nickel stainless steel plate. Typical uses include pulp and paper equipment, heat exchangers, mechanical equipment, dyeing equipment, film processing equipment, pipelines, and external materials for buildings in coastal areas.

　　Stainless steel plates have a smooth surface, high plasticity, toughness, and mechanical strength, and are resistant to corrosion by acid, alkaline gases, solutions, and other media. It is an alloy steel that is not easy to rust, but it is not absolutely rust free.

　　performance

　　Corrosion resistance

　　Stainless steel plates have similar resistance to general corrosion as unstable nickel chromium alloy 304. Long term heating within the temperature range of chromium carbide degree may affect the performance of alloys 321 and 347 in harsh corrosive media. Mainly used for high-temperature applications, which require materials to have strong resistance to sensitization to prevent intergranular corrosion at lower temperatures.

　　High temperature oxidation resistance

　　Stainless steel plates have high-temperature oxidation resistance, but the oxidation rate is influenced by inherent factors such as exposure environment and product morphology.

　　physical property

　　The total heat transfer coefficient of a metal depends on other factors besides its thermal conductivity. In most cases, the heat dissipation coefficient of the film layer, rust scale, and surface condition of the metal. Stainless steel can maintain a clean surface, so its heat transfer performance is better than other metals with higher thermal conductivity. Liaocheng Sandeli Stainless Steel provides eight technical standards for stainless steel plates. High strength stainless steel plates and their manufacturing methods have excellent corrosion resistance, bending processing performance, welding toughness, and stamping processing performance in the welding area. Specifically, stainless steel plates containing C: 0.02% or less, N: 0.02% or less, and Cr: 11% or more but less than 17%, with an appropriate content of Si, Mn, P, S, Al, Ni, and meeting the requirements of 12 ≤ Cr Mo 1.5Si ≤ 17, 1 ≤ Ni 30 (C N) 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 subjected to heat treatment with a cooling rate of more than 1 ℃/s. In this way, it can become a high-strength stainless steel plate with martensite structure containing more than 12% volume fraction, high strength, corrosion resistance and bending processing performance above 730MPa, and excellent toughness of welding Heat-affected zone. Reusing materials containing Mo, B, etc. can significantly improve the stamping performance of welded parts.

　　The flame of oxygen and gas cannot cut stainless steel plates because stainless steel is not easily oxidized.



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National Standard Properties of 304 Stainless Steel Plate

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