Q345D Heavy Plate Cutting

Q345D Heavy Plate Cutting

1. Q345D is low alloy steel plate
2. Implementation of the standard: GB/T1591-2008 "low alloy high strength structural steel"
3. Compared to Q345A, B, C steel, Q345D steel Low temperature impact energy test temperature is low (minimum 27J at -20°C)
4. The mechanical performance is good. Containing harmful material P, S is lower than Q345A, B, and C.
5. The market price is higher than Q345A, B, C

Q345D Chemical Composition

C：≤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

Mechanical Property of Q345D Heavy Plate

Yield: ≤ 16mm: ≥ 345; 16-40mm: ≥ 335;
40-63mm: ≥ 325; 63-80mm: ≥ 315;
80-100mm: ≥305; 100-150mm: ≥285;
150-200mm: ≥275; 200-250: ≥275;
250-400: ≥265.
Tensile strength: 450-630.
Elongation: ≥21.
Impact test: -20°C: ≥34