What is the difference between carbon steel, normalized steel, and grades Q235B and Q235C? What is the scope of application?

Thread Content

What is the difference between carbon steel, normalized steel, and grades Q235B and Q235C? What is the scope of application? The main difference lies in the temperature for the impact test: Q235B grade is subjected to a V-notch impact test at room temperature of 20°C ； Q235C grade is subjected to a 0°C V-notch impact test. Scope of application: 1. Grade Q235B: The design pressure of the container is P≤1.6 Mpa, and the operating temperature of the steel plate ranges from 20 to 300°C. When used for container shells, the steel plate thickness shall not exceed 16 mm, and it shall not be used in pressure vessels containing highly or extremely hazardous substances. 2. Grade Q235C: The design pressure of the container is P≤1.6 Mpa, and the operating temperature of the steel plate ranges from 0 to 350°C. When used for container shells, the steel plate thickness shall not exceed 16 mm.