What is the delivery condition of Q345D alloy

Q345D alloy plate is delivered in hot rolled, controlled tie, normalized, normalized + tempered, and thermo mechanical rolled (TMCP) states. This steel is a low-alloy steel plate, and the execution standard is GB / T1591-2008 Low-alloy high-strength structural steel. Q345D steel is compared with Q345A, B, C steel. The test temperature for low-temperature impact work is low (-20 ° C ** 27J).
Chemical composition: ≤0.18; Si: ≤0.50; Mn: ≤1.70; P: ≤0.030; S: ≤0.025; Nb: ≤0.07; V: ≤0.15; Ti: ≤0.20; Cr: ≤0.30; Ni: ≤0.50 ; Cu: ≤0.30; N: ≤0.012; Mo: ≤0.10; Als: ≥0.015.
 

Q345D alloy mechanical properties

The content of harmful materials P and S is lower than Q345A, B, and C. The market price is higher than Q345A, B, C. Steel is smelted by converter or electric furnace, if necessary, refining outside the furnace. Yield: ≤16mm: ≥345; 16-40mm: ≥335; 40-63mm: ≥325; 63-80mm: ≥315; 80-100mm: ≥305; 100-150mm: ≥285; 150-200mm: ≥275; 200-250: ≥275; tensile strength: 450-630.
 
 

Pre: Do the Q390B steel plates have Z-direction performance?

Next: What is the XAR500 steel?