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Q390E
Qilu
Product Description
Q390E Carbon Steel Plate
1: Q390E Steel Introduction
Q390E steel plate is a kind of low alloy high-strength structural steel, which belongs to the steel series specified by Chinese national standard GB/T 1591-2018." E" in the grade indicates that the material has excellent low-temperature toughness, which usually requires impact testing at lower temperatures to ensure the reliability and safety of the material in low-temperature environments. As Q390E steel plate has good low temperature toughness, welding needs to choose welding materials suitable for low temperature environment to ensure that the weld metal also has sufficient toughness.
Q390E Steel Stock In Warehouse
2: Q390E Quality Standard
EN10025-2 2005-ENG Hot rolled products of structural steel.pdf
3: Q390E Steel Equivalent
| Country | China | Japan | Germany |
| Standard | GB/T 1591 | JIS G3135 | DIN (W-Nr.) EN 10025-2 |
| Grade | Q390E | / | / |
4: Q390E Steel Chemical Composition
| Grade | C | Si | Mn | P | S | Cr | Ni |
| Q390E | 0.20 | 0.55 | 1.00-1.60 | 0.025 | 0.025 | 0.30 | 0.70 |
5: Q390E Steel Mechanical Properties
The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. If you want to know the properties, kindly contact the salesman.
6: Q390E Steel Overviews
| Size | Round | Dia 6-1200mm |
| Plate/Flat/Block | Thickness 6mm-500mm | |
| Width 20mm-1000mm | ||
| Heat treatment | Normalized ; Annealed ; Quenched ; Tempered | |
| Surface condition | Black; Peeled; Polished; Machined; Grinded; Turned; Milled | |
| Delivery condition | Forged; Hot rolled; Cold drawn | |
| Test | Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. | |
| Payment terms | T/T;L/C;/Money gram/ Paypal | |
| Trade terms | FOB; CIF; C&F; etc.. | |
| Delivery time | 30-45 days | |
7: Q390E Steel Application
Oil and Gas Industry: Q390E steel plate is suitable for oil and gas transportation pipelines and storage tanks in low temperature environment.
Chemical Equipment: low-temperature chemical equipment and containers, need to withstand the dual role of low temperature and chemical corrosion.
Shipbuilding: Ship structures will face low temperature environment when sailing in polar regions, Q390E steel plate can be used for hull structures and marine platforms.
Construction Engineering: building structures in cold regions, such as bridges, high-rise buildings, etc., need to consider the impact of low temperature on material properties.
Pressure Vessels: Low temperature pressure vessels need materials with good low temperature toughness when storing and transporting liquefied gases.
Polar Exploration Equipment: Polar exploration and scientific research equipment, such as ice drilling equipment, polar vehicles, etc., need to work in extreme low temperatures.
8: Q390E Steel Tolerance
Diameter(mm) | Tolerance | ||
Forged Steel Round Bar | 80-600 | Black Surface:0~+5 | Rough Machined or Turned:0~+3 |
650-1200 | Black Surface:0~+15 | Rough Machined or Turned:0~+3 | |
Hot Rolled Steel Round Bar | 16-310 | Black Surface:0~+1 | Peeled:H11 |
Cold Drawn Steel Round Bar | 6-100 | Black Surface:H11 | Peeled:H11 |
9: Delivery Condition
For hot forged bar, usually the delivery condition is hot forged, annealed rough turned/Black surface.
For hot rolled bar, usually the delivery condition is hot rolled, annealed, Black surface.
For hot forged plate, usually the delivery condition is hot forged, annealed, milled surface.
For hot rolled plate, usually the delivery condition is hot rolled, annealed, black surface.
