BBN employees work hard and work hard in their work. In life, colleagues care about each other, like a family, and accompany each other at important moments in life. BBN Steel organizes employees to carry out tourism activities every year, so that families can be exposed to nature and relax physically and mentally. The good combination of working and rest can achieve the goal of hard work and happy life.
No. 45 steel is commonly used medium carbon quenched and tempered structural steel. The cold plasticity of No. 45 steel is generally better than S355J0, S355N, S45C, SA283 hot rolled mild steel. Annealing and normalizing are better than quenching and tempering. No. 45 steel has higher strength and better machinability than Q345 steel. After proper heat treatment, it can obtain certain toughness, plasticity and wear resistance. No. 45 steel S355J0, S355N, S45C, SA283 hot rolled mild steel is suitable for hydrogen welding and argon arc welding, but not suitable for gas welding. Preheating is required before welding, and stress relief annealing shall be conducted after welding.
asme sa514 gr.P quenched and tempered alloy steel element composition%C: 0.12-0.21, Si: 0.20-0.35, Mn: 0.45-0.70, P max.: 0.035, S max.: 0.035, Ni: 1.20-1.50, Cr: 0.85-1.20, Mo: 0.45-0.6.0, B: 0.001-0.005The mechanical properties in thickness (mm)T≤65Yield strength (≥Mpa): 690Tensile strength (Mpa):760-895Elongation in ≥,%: 18
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