Q235A gb standard steel angles size measurement


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A514 gr.E quenched and tempered alloy steel
chemical composition (melting analysis)%C: 0.12-0.20, Si: 0.20-0.40, Mn: 0.40-0.70, P max.: 0.035, S max.: 0.035, Cr: 1.40-2.00, Mo: 0.40-0.60, Ti: 0.01-0.10, Cu: 0.15-0.50, B: 0.001-0.005
The mechanical properties in thickness (mm)T≤65Yield strength (≥Mpa): 690Tensile strength (Mpa):760-895Elongation in ≥, %: 18

The addition of Ca element in steel such as Q235A gb standard can refine grain size, partly desulphurize and change the composition, quantity and morphology of non-metallic inclusions. It is similar to that of adding rare earth in steel. It can improve the corrosion resistance, wear resistance, high temperature and low temperature resistance of steel, improve the impact toughness, fatigue strength, plasticity and welding performance of the steel, and increase the cold heading, shock resistance, hardness and contact endurance strength of the steel.

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In the production process of the ironmaking process, the moisture content and air temperature of the ironmaking blast furnace blast have a direct impact on the fuel consumption and fuel consumption structure of the ironmaking process. Blast furnace blast dehumidification is to remove the moisture in the blast furnace blast, eliminate the adverse effects of atmospheric humidity fluctuations on the blast furnace forward movement, and create stable operating conditions for the fans.

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