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Q390B
Qilu
Product Description
Q390B STKT540 Carbon Steel Plate
1: Q390B Steel Introduction
Q390B belongs to low alloy high-strength steel plate, Q is the yield strength of steel, 390 is the specific value of strength, B is its quality level, its comprehensive mechanical properties are excellent, welding, cold working and corrosion resistance is good, usually used in the construction of boilers, pressure vessels, bridges and other areas of the construction of the Q390B steel plate has a better weldability, suitable for common welding methods such as Electric arc welding, gas shielded welding and laser welding.
Q390B Steel Stock In Warehouse
2: Q390B Quality Standard
EN10025-2 2005-ENG Hot rolled products of structural steel.pdf
3: Q390B Steel Equivalent
| Country | China | Japan | Germany |
| Standard | GB/T 1591 | JIS G3135 | DIN (W-Nr.) EN 10025-2 |
| Grade | Q390B | STKT540 | / |
4: Q390B Steel Chemical Composition
| Grade | C | Si | Mn | P | S | Nb | V |
| Q390B | 0.20 | 0.55 | 1.00-1.60 | 0.030 | 0.030 | 0.005-0.080 | 0.02-0.15 |
5: Q390B 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: Q390B 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: Q390B Steel Application
Construction: Q390B steel plate can withstand large loads and deformations, and is suitable for beams, columns, walls and other parts of buildings, especially for the main structure of large-span, high-rise buildings.
Bridges: Q390B steel plate has excellent strength and toughness, and can be applied to the main girders of all kinds of bridges, suspension bridges, cable-stayed bridges and other key parts, to ensure the carrying capacity and seismic performance of bridges.
Ships: Q390B steel plate is widely used in ship structure, including hull skeleton, deck, hull and other parts, which can provide sufficient strength and corrosion resistance to ensure the safety and reliability of ships.
Pressure Vessels: Q390B steel plate is suitable for various types of pressure vessels and storage tanks manufacturing, such as petrochemical equipment, fertilizer units, natural gas storage tanks, etc. It can withstand high pressure and corrosion resistance.
Machinery Manufacturing: Q390B steel plate is commonly used in the manufacture of heavy machinery and equipment, such as excavator arms, automobile chassis, lifting mechanism, etc., to meet the requirements of mechanical equipment in terms of strength and stiffness.
8: Q390B 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.
