Q355 Steel Description
Q355 is kind of steel. It is a kind of low alloy high strength structural steel, widely used in Bridges, vehicles, ships, construction, pressure vessels, special equipment, etc., where "Q" means yield strength, 355 means the yield strength of this steel is 355MPa, and the yield value will decrease with the increase of the thickness of the material.
Q355 Steel Chemical Composition (Hot rolled)
| Steel Grade | Quality Grade | C % (≤) | Si % (≤) | Mn (≤) | P (≤) | S (≤) | Cr (≤) | Ni (≤) | Cu (≤) | N (≤) |
| Q355 | Q355B | 0.24 | 0.55 | 1.6 | 0.035 | 0.035 | 0.30 | 0.30 | 0.40 | 0.012 |
| Q355C | 0.20 | 0.030 | 0.030 | 0.012 | ||||||
| Q355D | 0.20 | 0.025 | 0.025 | – |
Mechnical property for GB/T 1591-2018 Q355C STEEL PLATE
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Mechanical Property for Q355C steel plate |
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Thickness (mm) |
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Yield strength (≥Mpa) |
T≤16 |
16<T≤40 |
40<T≤63 |
63<T≤80 |
80<T≤100 |
100<T≤150 |
150<T≤200 |
200<T |
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355 |
345 |
335 |
325 |
315 |
295 |
285 |
275 |
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Tensile strength (Mpa) |
T≤100 |
100<T≤150 |
150<T≤250 |
250<T≤4000 |
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470-630 |
450-600 |
450-600 |
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Features and Applications
Q355C steel plate is equivalent to Q345C steel plate in GB/T 1591-2008,and also equal to EN 10025-2 S355J0 steel plate,Q345C steel material shall be done low temperature impacting test at 0 Deg.C.Gnee steel stock Q355C steel plate,Q355C steel angle,Q355C flat bar,S355j0 steel plate,S355j0 steel pipes in our port warehouses which ready for shipment.
