High Strength Steel Plate Q620E
The implementation standard of Q620E low alloy steel plate is GB/T special technical conditions. The "Q" in the Q620E grade represents the yield strength of the steel, "620" means the yield strength value is not less than 620MPa, and "E" represents the quality grade.
Q620E high strength steel plate has good low temperature toughness and can maintain stable performance at low temperatures. In addition to high strength and high toughness, Q620E high strength alloy steel plate also has high wear resistance, impact resistance, corrosion resistance, fatigue resistance and easy processing, meeting the use requirements under a variety of complex working conditions.
►Mechnical property for GB/T 16270 Q620E high strength plate
|
Thickness(mm) |
Yield strength (≥Mpa) |
Tensile strength (Mpa) |
Elongation in ≥, A % |
|
T≤50 |
620 |
700-890 |
15 |
|
50<T≤100 |
580 |
700-890 |
|
|
100<T |
560 |
650-830 |
►Chemical composition for GB/T 16270 Q620E high strength sheet
|
C |
Si |
Mn |
P |
S |
Cu |
Cr |
|
0.20 |
0.80 |
1.70 |
0.020 |
0.010 |
0.50 |
1.50 |
|
Ni |
Mo |
B |
V |
Nb |
Ti |
- |
|
2.00 |
0.70 |
0.005 |
0.12 |
0.06 |
0.05 |
- |
