Stainless steel plate is a general term encompassing both stainless steel plates and acid-resistant steel plates. Introduced at the beginning of this century, the development of stainless steel plates laid an important material and technological foundation for modern industrial development and technological progress. There are many types of stainless steel plates, each with different properties, and they have gradually formed several major categories during their development.
Based on microstructure, they are divided into four main categories: austenitic stainless steel plates, martensitic stainless steel plates (including precipitation hardening stainless steel plates), ferritic stainless steel plates, and austenitic-ferritic duplex stainless steel plates. Based on the main chemical composition or some characteristic elements in the steel plate, they are classified into chromium stainless steel plates, chromium-nickel stainless steel plates, chromium-nickel-molybdenum stainless steel plates, as well as low-carbon stainless steel plates, high-molybdenum stainless steel plates, and high-purity stainless steel plates. Based on the performance characteristics and applications of the steel plates, they are classified into nitric acid-resistant stainless steel plates, sulfuric acid-resistant stainless steel plates, pitting corrosion-resistant stainless steel plates, stress corrosion-resistant stainless steel plates, and high-strength stainless steel plates. Based on the functional characteristics of the steel plates, they are classified into low-temperature stainless steel plates, non-magnetic stainless steel plates, free-machining stainless steel plates, and superplastic stainless steel plates.
Currently, the commonly used classification method is based on the microstructure and chemical composition of the steel plate, or a combination of both. Generally, it is divided into martensitic stainless steel, ferritic stainless steel, austenitic stainless steel, duplex stainless steel, and precipitation-hardening stainless steel, or into two main categories: chromium stainless steel and nickel stainless steel. It has a wide range of applications, typical uses include: heat exchangers for pulp and paper making, machinery, dyeing equipment, film processing equipment, pipelines, and exterior building materials in coastal areas.
Stainless steel has a smooth surface, high plasticity, toughness, and mechanical strength, and is resistant to corrosion from acidic and alkaline gases, solutions, and other media. It is an alloy steel that does not easily rust, but it is not absolutely rust-proof.
