BBN is a A709 Gr 50W low alloy steel sheet world leader in exporting A106 / SA 106 pipe and stocks a full range of grades B/C with a size rage NPS 1/8" to NPS 48", with nominal (average) wall thickness as given in B36.10.
In the whole steel structure and steel body, the medium and heavy plate is an important part, once the problem occurs, it is easy to fracture, collapse and occur explosion. So how to judge whether the medium and heavy plate, A709 Gr 50W low alloy steel sheet is of high quality? First of all, check whether there are cracks on the surface of the A709 Gr 50W low alloy steel sheet plate and how glossy it is. Secondly, to measure the thickness error of medium and heavy plate, it is better to use the instrument to measure the bending tensile value. Finally, observe the scale of the steel plate manufacturers, whether there are relevant qualification certificates, and how the production process is.
The main advantage of weather resistant steel plate is its weathering ability. When exposed to the atmosphere, the weather resistant steel plate will form a anti-corrosion film on the surface, and prevent further corrosion to the steel A709 Gr 50W low alloy steel sheet. Thus the weather resistant steel plate almost needs no paint treatment, which is the important measure for carbon steel plates to avoid going rust. Therefore, the maintance cost of weather resistant steel plate is low. The weather resistant steel plate is suitable for outside structure and construction use.
Alloy steel plate: The primary purpose of adding alloy elements to steel is to improve the hardenability of the steel, and it is easy to obtain martensite during quenching. The second is to improve the tempering stability of the steel to keep the martensite at a higher temperature, so that the carbides precipitated during the tempering of the quenched steel are smaller, uniform and stable. In this way, under the same conditions, alloy steel has higher strength than carbon steel, A709 Gr 50W low alloy steel sheet.
Chemical composition of saph440 pickled automobile steel plate (melting analysis)%C: ≤0.21, Si: ≤0.30, Mn: ≤1.50, P: ≤0.030, S: ≤0.025, Al: ≥0.01Mechanical properties of saph440 steelYield strength MPa: ≥305MpaTensile strength MPa: ≥440MpaElongation: ≥34
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