Q345 Grade Classification

The Q345 grade can be subdivided into Q345A, Q345B, Q345C, Q345D, and Q345E. The primary difference among them lies in the impact temperature.

Q345A Grade, no impact.

Q345B grade, 20-degree room temperature impact.

Q345C grade, it is 0-degree impact.

Q345D grade, -20°C impact.

Q345E grade, -40 degree impact.

At various impact temperatures, the impact values also differ.