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JIS SMA490AW SMA400AW weather resistance steel Hot rolled atmospheric corrosion resistant welded structural steel sheet plate
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Meorient Import & Export Co.LTD
China - Hangzhou
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Hangzhou,Shanghai
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5-10人
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45 Day(s)
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--Product Description
ASTM A588 Hot Rolled Corten A Mild Weather Resistant Steel Plate
Product Description
Weathering steel, which is resistant to atmospheric corrosion steel, is a series of low-alloy steels between ordinary steel and stainless steel. Weathering steel is made of ordinary carbon steel and a small amount of corrosion-resistant elements such as copper and nickel. It has the toughness and plasticity of high-quality steel. Characteristics such as extension, molding, welding, abrasion, high temperature and fatigue resistance; weather resistance is 2 to 8 times that of ordinary carbon steel, and coating performance is 1.5 to 10 times that of ordinary carbon steel. At the same time, it has the characteristics of rust resistance, anti-corrosion and life extension, thinning and reducing consumption, saving labor and energy. Weathering steel is mainly used for steel structures used for long-term exposure to the atmosphere such as railways, vehicles, bridges, towers, photovoltaics, and high-speed projects. Structural parts used in the manufacture of containers, railway vehicles, oil derricks, seaport buildings, oil production platforms, and containers containing hydrogen sulfide corrosion media in chemical petroleum equipment.
Product Name | Weathering steel plate |
Grade | SPA-H, 09CuPCrNi-A, Q355 NH, B480GNQR, Q450NQR1,A588, S355J2W |
Standard | DIN GB ISO JIS BA ANSI |
Color | original or pre-rusted |
Process | Hot rolling |
machining | laser cutting |
product features
The alloy composition and the weight percentage of the weathering steel are: C: ≤ 0.12, Si: 0.25 to 0.75, Mn: 0.2 to 0.5, S ≤ 0.02, P: 0.06 to 0.12, Cu: 0.25 to 0.5, Cr: 0.3~1.25, Ni: 0.12~0.65, the rest are Fe and trace elements. By alloying Cu, Mn, Si, Al, etc., and simply adjusting the partial element content of ordinary low carbon steel (Q235 steel), it can produce good atmospheric corrosion resistance without changing the production process conditions of Q235 steel. Economic weathering steel with comprehensive mechanical properties.
- Product application
1. High-performance weathering steel and fire-resistant steel can reduce the maintenance cost of steel structure, and provide new solutions to solve the fire and corrosion problem of exposed unshielded steel structure, such as high-voltage electric tower.
2, the production and installation process of fire-resistant weathering steel is basically the same as that of conventional steel, and the design method is the same as ordinary steel structure, but more test verification is needed.
3, high-strength weathering steel has been promoted and applied in bridge engineering, and it is necessary to study design theory and method.
4, fire resistant weathering steel can also be used in the floor board
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Weathering steel characteristics
It refers to a low-alloy structural steel with a protective rust layer that is resistant to atmospheric corrosion and can be used to manufacture steel structures such as vehicles, bridges, towers, and containers. Compared with plain carbon steel, weathering steel has better corrosion resistance in the atmosphere. Compared with stainless steel, weathering steel has only a small amount of alloying elements, such as phosphorus, copper, chromium, nickel, molybdenum, niobium, vanadium, titanium, etc., the total amount of alloying elements is only a few percent, not like stainless steel, reaching 100 More than a dozen, so the price is relatively low.
Weathering steel principle
After adding trace elements such as phosphorus, copper, chromium and nickel to the steel, the surface of the steel is formed into a dense and highly protective film, which hinders the diffusion and development of the rust, and protects the substrate under the rust layer to slow down the corrosion rate. An amorphous spinel-type oxide layer of about 50 μm to 100 μm thick formed between the rust layer and the substrate is dense and adheres well to the base metal, and the oxygen in the atmosphere is prevented due to the presence of the dense oxide film. The infiltration of water into the steel matrix slows the development of rust to the steel material and greatly improves the atmospheric corrosion resistance of the steel material. Weathering steel is a steel system that can be used for thinning, bare use or simplified painting, so that the product can resist corrosion, save labor, and upgrade. It is also a new mechanism, new technology and new technology that can be integrated into modern metallurgy. Sustainable development and innovation in the steel system.
Weathering steel manufacturing process
Weathering steel is generally used in the furnace-smelting (converter, electric furnace-microalloying treatment-argon-LF refining-low superheat continuous casting (feeding rare earth wire)-controlled rolling and cooling). The scrap steel is added into the furnace together with the charge, and is smelted according to the conventional process. After the steel is discharged, the deoxidizer and the alloy are added. After the molten steel is treated by argon blowing, the molten steel is immediately cast, and the molten steel after the argon temperature adjustment is cast into a slab by the continuous casting machine. The rare earth element is added to the steel, the weathering steel is purified, and the inclusion content is greatly reduced.
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We are manufacture,we have 12 years experience for supply Metal material and products in domestic.
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We can supply the kinds of metal materials and products,and we also can supply other process services.
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We can supply the free sample,but the sample express freight should be by you.
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It is normal 7-10 days after receive your deposit.
5.Which payment terms can you accept?
We can accept the TT,Western Union now or Negotiation.
We are manufacture,we have 12 years experience for supply Metal material and products in domestic.
2.Can you supply what is the service?
We can supply the kinds of metal materials and products,and we also can supply other process services.
3.Can you supply the free sample?
We can supply the free sample,but the sample express freight should be by you.
4.What about your the fast lead time if we place order?
It is normal 7-10 days after receive your deposit.
5.Which payment terms can you accept?
We can accept the TT,Western Union now or Negotiation.
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