S550QL High Strength Structural Steel Plate
S550QL high-strength alloy steel plate is a high-yield strength quenched and tempered structural steel material. Yield point: >550 N/mm², guaranteed notched impact energy 30 J at -40°C (longitudinal specimen), widely used in various types of welded steel structures, such as bridges and load-bearing structures as well as transport vehicles, lifting and earth-moving machinery.
If you are satisfied with our S550QL high strength low alloy steel, welcome to place an order with us. As one of the best high strength low alloy hsla steel manufacturers and suppliers in China, we have a large number of hot-selling products for you to choose from. For detailed chemical composition and free samples, please contact our factory immediately. We provide competitive prices and good services.
S550QL high strength steel chemical composition
Grade |
C % |
Si % |
Mn % |
P % |
S % |
N % |
B % |
Cr % |
|
S550QL |
0.200 |
0.800 |
1.700 |
0.030 |
0.017 |
0.015 |
0.005 |
1.500 |
|
Cu % |
Mo % |
Nb % |
Ni % |
Ti % |
V % |
Zr % |
|
|
|
0.500 |
0.700 |
0.060 |
2.000 |
0.050 |
0.120 |
0.150 |
|
S550QL high tensile steel Mechanical property
Grade |
Thickness(mm) |
Min Yield (Mpa) |
Tensile(MPa) |
Elongation(%) |
Min Impact Energy |
|
|
S550QL |
8mm-50mm |
Min 550Mpa |
640-820Mpa |
16% |
-20 |
Min 30J |
|
51mm-100mm |
Min 530Mpa |
640-820Mpa |
16% |
-20 |
Min 30J |
|
|
101mm-150mm |
Min 490Mpa |
590-770Mpa |
16% |
-20 |
Min 30J |
|
S550QL high strength alloy steel thermal property
| Property | Value | Comment |
|---|---|---|
|
Coefficient of thermal expansion |
11.87 1/K |
Predicted Value |
|
Specific heat capacity |
441.7 J/(kg·K) |
Predicted Value |
|
Thermal conductivity |
35.68 W/(m·K) |
Predicted Value |
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We have excellent after-sales service. If you have any questions about S550QL High Strength Structural Steel Plate, you can contact us and we will reply you within two hours.
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