Q690D High Strength Low Alloy Plate
Q690D alloy steel plate is a high-strength welded structural steel that can withstand large loads and stresses. Even in low-temperature environments, Q690D high-strength steel plates show good toughness, ensuring the stability and safety of the structure under extreme conditions.
Q690D high-strength alloy steel plates have good welding process performance and high-quality welded joints, which can meet various welding process requirements. Through reasonable chemical composition design and heat treatment process, Q690D low-alloy steel plates are not prone to cracks during welding, ensuring the safety and reliability of the overall structure.
►Mechnical property for GB/T 16270 Q690D high tensile steel sheet
|
Thickness(mm) |
Yield strength (≥Mpa) |
Tensile strength (Mpa) |
Elongation in ≥, A % |
|
T≤50 |
690 |
770-940 |
14 |
|
50<T≤100 |
650 |
760-930 |
|
|
100<T |
630 |
710-900 |
►Chemical composition for GB/T 16270 Q690D high strength steel plate
|
C |
Si |
Mn |
P |
S |
Cu |
Cr |
|
0.20 |
0.80 |
1.80 |
0.025 |
0.015 |
0.50 |
1.50 |
|
Ni |
Mo |
B |
V |
Nb |
Ti |
- |
|
2.00 |
0.70 |
0.005 |
0.12 |
0.06 |
0.05 |
- |
