Stainless steel plate is a kind of alloy steel that is not easy to rust. It has a smooth surface, high plasticity, toughness and mechanical strength, and is resistant to corrosion by acids, alkaline gases, solutions and other media.
Due to the pressure resistance, high temperature resistance and corrosion resistance of stainless steel plates, most pressure vessels are made of stainless steel plates. At present, the most commonly used austenitic stainless steels used in pressure vessels include S30408 S30403 S31008 S32168 S31608 S31603 S31668 and other commonly used duplex stainless steels such as S22053 S22253. When selecting specific products, the medium, temperature, corrosion resistance, hydrogen resistance, economy, etc. must be considered. .
Pressure vessel plates are used to manufacture steel plates for steam boilers, pressure vessels and other pressure vessel structural parts. Pressure vessel steel plates are subject to certain air pressure and water pressure, as well as different temperature environments, such as high, medium and low temperatures, so the requirements for this steel plate are relatively strict.
Type: According to the composition, it can be divided into two categories: carbon steel plate and alloy steel plate; according to the strength, it can be divided into high, medium and low voltage steel plates; according to the use environment, it can be divided into high, medium and low temperature steel plates and corrosion-resistant steel plates.
Heat treatment: hot rolling, normalizing, controlled rolling, annealing, tempering + normalizing, quenching and tempering.
Specification
Pressure vessel plates have different standards and different steel grades, as follows:
National standard: Q245R, Q345R, Q370R, 16MnDR, 15CrMoR, 09MnNiDR, 12MnNiVR, 14Cr1MoR, 12Cr2Mo1R, 13MnNiMoR, 18MnMoNbR, 15MnNiDR, 20MnMoR, etc.
European standard: P265GH, P295GH, P275NH, P355GH, P355NH, P355NL, P460NH, etc.
American standards: SA515Gr60/65/70, SA516Gr60/65/70, SA285GrC, A537CL, SA662GrC, SA299A/B, SA203E/D, SA302GrC/B, SA387Gr11/12/22, ASTM A204, etc.
Japanese standard: SB410, SPV355, SB450, etc.
German standard: 19Mn6, 15Mo3, etc.
Mechanical behavior
Steel plates for various boilers and pressure vessels are generally required to undergo tensile, bending and impact tests.
Post time: Oct-18-2023