Weathering steel plate

1. ASTM A588:

- Chemical Composition: Mainly contains elements such as carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), and also contains a small amount of alloying elements such as copper (Cu), chromium (Cr), and nickel (Ni). For example, the carbon content is generally below 0.19%, silicon content is between 0.30% - 0.65%, manganese content is between 0.80% - 1.25%, copper content is about 0.20% - 0.40%, and chromium content is about 0.40% - 0.65%.

- Performance Data: It has good atmospheric corrosion resistance. It has relatively high strength, with a yield strength generally above 345 MPa and a tensile strength above 485 MPa. At the same time, it has good toughness and welding performance.

- Application Fields: Widely used in structures such as bridges, buildings, and towers, especially in large infrastructure constructions exposed to the atmospheric environment. For example, in the construction of bridges in some coastal areas, ASTM A588 weathering steel plates can effectively resist the erosion of sea breeze and seawater.

2. ASTM A242:

- Chemical Composition: The carbon content is relatively low, usually below 0.15%. The silicon content is between 0.15% - 0.50%, manganese content is between 0.40% - 1.25%, and it also contains appropriate amounts of alloying elements such as copper and chromium. For example, the copper content is about 0.20% - 0.55%, and the chromium content is about 0.40% - 1.25%.

- Performance Data: It has excellent weather resistance and can maintain stable performance in various harsh atmospheric environments. The yield strength is generally around 345 MPa, and the tensile strength is above 485 MPa. It has good welding performance and is convenient for processing and installation.

- Application Fields: Commonly used in fields such as building facades, railway vehicles, and containers. In the field of architecture, its unique appearance can add a unique aesthetic feeling to buildings while ensuring the durability of the structure.

 II. European Weathering Steel Plates

 1. S355J2W:

- Chemical Composition: It contains basic elements such as carbon, silicon, manganese, phosphorus, and sulfur, and also contains a certain amount of alloying elements such as copper, chromium, and nickel to improve weather resistance. For example, the carbon content is below 0.16%, the silicon content is below 0.55%, the manganese content is below 1.60%, the copper content is about 0.25% - 0.55%, and the chromium content is about 0.40% - 0.80%.

- Performance Data: It has high strength and good toughness. The yield strength is generally above 355 MPa, and the tensile strength is between 470 - 630 MPa. It has outstanding atmospheric corrosion resistance and can maintain good stability when exposed to the natural environment for a long time.

- Application Fields: Mainly used in fields such as building structures, bridges, and mechanical manufacturing. In bridge construction, S355J2W weathering steel plates can reduce maintenance costs and increase the service life of bridges.

 III. German Weathering Steel Plates

 1. DIN 1.8945:

- Chemical Composition: Composed of elements such as carbon, silicon, manganese, phosphorus, and sulfur, and also contains an appropriate amount of alloying elements such as copper, chromium, and nickel. For example, the carbon content is below 0.12%, the silicon content is between 0.15% - 0.50%, the manganese content is between 0.30% - 1.00%, the copper content is about 0.20% - 0.60%, and the chromium content is about 0.30% - 0.80%.

- Performance Data: It has good weather resistance and welding performance. The yield strength is generally above 355 MPa, and the tensile strength is between 490 - 630 MPa. It has good toughness and can adapt to various complex working environments.

- Application Fields: Widely used in fields such as industrial buildings, mechanical manufacturing, and railway transportation. In mechanical manufacturing, weathering steel plates can be used to manufacture the casings of some outdoor equipment, which are both beautiful and durable.

 IV. Japanese Weathering Steel Plates

 1. JIS G3125 SPA-H:

- Chemical Composition: Mainly contains elements such as carbon, silicon, manganese, phosphorus, and sulfur, and also contains a certain amount of alloying elements such as copper, chromium, and nickel. For example, the carbon content is below 0.12%, the silicon content is between 0.25% - 0.75%, the manganese content is between 0.20% - 0.50%, the copper content is about 0.20% - 0.60%, and the chromium content is about 0.30% - 1.25%.

- Performance Data: It has good atmospheric corrosion resistance and relatively high strength. The yield strength is generally above 355 MPa, and the tensile strength is above 490 MPa. It has good welding performance and is convenient for processing and use.

- Application Fields: Commonly used in fields such as architecture, bridges, and containers. In container manufacturing, SPA-H weathering steel plates can effectively resist the corrosion of seawater and atmosphere and prolong the service life of containers.

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