What is the Q345NQR3 steel?

Standard: TB1979-2014

Grade: Q345NQR3

Category: atmospheric corrosion resisting steel for railway rolling stock

Equivalent: 09CuPCrNi-B hot rolled, ASTM A242,SPA-H, Q345GNHL

Size: Thickness: 1.6mm-60mm, Width: 1000mm-4200mm, Length: 3000mm-18000mm

Performance analysis of Q345NQR3 

Weather resistant steel is made of ordinary carbon steel with a small amount of corrosion-resistant elements such as copper and nickel. It has the characteristics of high-quality steel such as strength, ductility, forming, welding, abrasion, high temperature, fatigue, etc.; weather resistance is 2~ of ordinary carbon steel. 8 times, the coating performance is 1.5-10 times that of ordinary carbon steel, which can be used in thinner, bare or simplified coating. The steel has the characteristics of rust resistance, corrosion resistance and longevity of components, thinning and consumption reduction, and labor-saving and energy-saving characteristics, which benefit component manufacturers and users.

Q345NQR3 steel plate is outdoor steel for containers, power plant chimneys, railway projects, such as steel for large outdoor sculptures.