09CuPCrNi-A weathering steel: complete analysis of characteristics, composition and mechanical prope

09CuPCrNi-A concept of weathering steel

09CuPCrNi-A weathering steel, is a kind of high-strength weathering steel, formed by adding a small amount of Cu (copper), P (phosphorus), Cr (chromium), Ni (nickel) and other corrosion resistant elements in ordinary steel. This kind of steel belongs to atmospheric corrosion resistant steel, which is a low alloy steel series between ordinary steel and stainless steel.

09CuPCrNi-A weathering steel characteristics

High strength: 09CuPCrNi-A weathering steel has high yield strength and tensile strength, and can withstand greater external force.

Excellent corrosion resistance: Due to the addition of Cu, P, Cr, Ni and other alloying elements, 09CUPCrNIA weathering steel can form A layer between the rust layer and the matrix of about 50~100μm thick dense and good adhesion to the matrix metal amorphous spinel oxide layer, this layer of oxide layer can protect the steel from atmospheric corrosion, therefore, 09CuPCrNi-A weathering steel has excellent corrosion resistance.

Good processability and weldability: 09CuPCrNi-A weathering steel is easy to process and manufacture, and can meet the production needs of various complex shapes and structural parts.

09CuPCrNi-A weather-resistant tempering chemical composition

09CuPCrNi-A weathering steel chemical composition mainly includes the following elements, its approximate content range is as follows:

Carbon (C) : 0.12~0.21%

Silicon (Si) : 0.2~2.0%

Manganese (Mn) : 0.7~2.0%

Sulfur (S) : ≤0.036%

Phosphorus (P) : ≤0.034%

Copper (Cu) : 0.10~0.40%

Chromium (Cr) : General content of about 0.5%

Nickel (Ni) : The general content is about 0.3%

Aluminum (Al) : <0.2%

The rest: mainly Fe (iron) and trace impurities

09CuPCrNi-A mechanical properties of weathering steel

09CuPCrNi-A weathering steel mechanical properties mainly include the following aspects:

Yield strength: about 275~345MPa

Tensile strength: about 390~510MPa

Elongation: approximately 31%

Hardness: about 150HB

In summary, 09CuPCrNi-A weathering steel with its high strength, excellent corrosion resistance and good processing performance, has a wide range of application prospects in construction, Bridges, vehicles, ships and other fields.