Weather-resistant structural steel is atmospheric corrosion-resistant steel, which belongs to low-alloy high-strength structural steel. According to its main characteristics, it is divided into high weather-resistant structural steel and weathering steel for welded structures.
1. High weathering steel
High weather resistance structural steel is to add a small amount of copper, phosphorus, chromium and nickel elements to the steel to form a protective layer on the surface of the metal collective to improve the atmospheric corrosion resistance of the steel, and a small amount of molybdenum, niobium, Vanadium, titanium, zirconium and other elements are used to refine the grains, improve the mechanical properties of the steel, improve the strength and toughness of the steel, reduce the brittle transition temperature, and make it have better resistance to brittle fracture. [1]
2. Weathering steel for welded structure
The elements added to the steel, except for phosphorus, are basically the same as those of the high weather resistance structural steel, and their functions are also the same, and improve the welding performance.
The use of high weathering structural steel is mainly used for bolted, riveted and welded structural parts for vehicles, containers, buildings, towers and other structures due to its better atmospheric corrosion resistance than weathering steel for welded structures. When used as welded structural parts, the thickness of the steel should be no more than 16mm. The welding performance of weathering steel for welded structure is better than that of high weathering structural steel, and it is mainly used for welded structural parts of bridges, buildings and other structures.
Corrosion-resistant, high-strength, low-alloy steel plate.
Available in three grades: A, B and K.
Often referred to as Corten or Weathering steel.
Ideal for welding, riveting or bolting in construction applications, primarily for bridges and buildings.
Suitable for many applications in bare or unpainted conditions when exposed properly.
Charpy test requirements may be requested.
May be certified to meet multiple specifications and/or standards on Mill Test Report, but guaranteed to be certified to meet ASTM A588 standards.
Product Name
| ASTM A588 Corrosion Resistant Structural Steel Plate |
Standard
| ASTM |
Material
| ASTM A588 A/B/K |
Technology
| Hot Rolled ,Cold Rolled,Cold Drawn,Hot Expended |
Tolerance
| Control with in the standard, OD:+/-1%, WT:+/-5%
|
Application
| Widely used in marine components, building steel structure components, substation auxiliary facilities, light industry, etc. |
Payment Terms
| 1.FOB 30%T/T,70% Before shipment
2.CIF 30% Pre-payment , Balance must be paid before shipment
3.Irrevocable 100% L/C at sight
|
Third Party Inspection
| SGS ,BV, MTC
|
Advantages
| 1.Short delivery time 2.Quality assurance 3.Competitive price, 4.Free Sample |
Delivery Time
| Within 25 days after receipt of advance payment |
| MATERIAL PROPERTIES |
| THICKNESS | YIELD POINT (KSI) | TENSILE STRENGTH (KSI) | MIN. 2” ELONGATION % |
| 4 IN. AND UNDER | 50 | 70 | 21 |
| OVER 4 IN. TO 5 IN. | 46 | 67 | 21 |
| OVER 5 IN. TO 8 IN. | 42 | 63 | 21 |
| CHEMICAL COMPOSITION |
| A | |
| CARBON | 0.19% MAX |
| MANGANESE | 0.80-1.25% |
| PHOSPHORUS | 0.030% MAX |
| SULFUR | 0.030% MAX |
| SILICON | 0.03-0.65% |
| NICKEL | 0.40% MAX |
| CHROMIUM | 0.40-0.65% |
| COPPER | 0.25-0.40% |
| VANADIUM | 0.02-0.10% |
| | |
| B | |
| CARBON | 0.20% MAX |
| MANGANESE | 0.75-1.35% |
| PHOSPHORUS | 0.030% MAX |
| SULFUR | 0.030% MAX |
| SILICON | 0.15-0.50% |
| NICKEL | 0.50% MAX |
| CHROMIUM | 0.40-0.70% |
| COPPER | 0.20-0.40% |
| VANADIUM | 0.01-0.10% |
| | |
| K | |
| CARBON | 0.17% |
| MANGANESE | 0.50-1.20% |
| PHOSPHORUS | 0.030% MAX |
| SULFUR | 0.030% MAX |
| SILICON | 0.25-0.50% |
| NICKEL | 0.40% MAX |
| CHROMIUM | 0.40-0.70% |
| MOLYBDENUM | 0.10% |
| COPPER | 0.30-0.50% |
| COLUMBIUM | 0.005-0.05% |
The steel plate is a flat steel that is cast with molten steel and pressed after cooling.
The Steel Sheet is flat, rectangular and can be directly rolled or cut from wide steel strips.
The steel plates is divided according to the thickness, the thin steel plate is less than 4 mm (the thinnest is 0.2 mm), the medium-thick steel plate is 4-60 mm, and the extra-thick steel plate is 60-115 mm.
Steel sheets are divided into hot rolling plate and cold rolling plate according to rolling.
1. Hot Rolled Steel Plate
Hot rolling processing methods include hot rolling, forging, extrusion and other methods.
2. Cold Rolled Steel Plate
Cold rolling processing methods include cold rolling, cold drawing and cold drawing, cold bending, cold extrusion and other methods.
The cold rolling method is to continue processing the hot rolled steel below the recrystallization temperature to make it cold rolled steel. Using cold rolling processing method can improve the mechanical properties of steel, and obtain products with high dimensional accuracy and certain smoothness.
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