Use of Q235, Q345, 20#
Thread Content
What are the differences when using Q235, Q345, and 20#? When used in steel structures, what are the criteria for choosing Q235 and Q345?
It should be the mechanical properties and strength of the material
In Q235: Q stands for yield strength, and 235 indicates that the yield strength of the material is 235 MPa； Q345 and so on ； 20# indicates a carbon content of 0.2%, and it is often used for pipes. As structural steel, Q235A is used for the most part.