05CuPCrNi weathering steel plate

05CuPCrNi is a common material in weathering steel and is also commonly used.

The 05CuPCrNi steel is delivered in the form of cold rolled coils. Because it is cold-rolled, the surface is more delicate and brighter than the hot-rolled sheet, the thickness is generally between 0.5-2.0MM, and the width is 1250 mm.

05CuPCrNi is also a representative grade of cold-rolled weathering steel, which is especially commonly used. Commonly used in power plant equipment, landscape decoration, air preheater, rolling stock, shipping ships, environmental protection equipment, landscape curtain walls, garden factory halls, landscaping projects, etc.

The addition of Cu and P to 05CuPCrNi is mainly to improve corrosion resistance and solid solution strengthen ferrite.
Cr is also one of the alloying elements to improve the atmospheric corrosion resistance of low-alloy steels, but it is generally only effective when combined with Cu elements.

Cr has a low corrosion potential and is an element with a tendency to passivation. It promotes the formation of a dense oxidized passivation film on the surface of the steel in the atmosphere, thereby improving the corrosion resistance of the steel. In the process of atmospheric corrosion, the content of Cr is controlled at 0.30%-0.45%. Ni is also one of the effective alloying elements for atmospheric corrosion resistance.

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