How to ensure the performance homogenization of S460Q steel

Q235 is a kind of carbon steel. S460Q steel, Q235 steel is widely used in steel structure construction because of its good toughness, good plasticity, certain elongation, good welding performance and heating performance. Q235A steel plate contains C ≤ 0.22%, Mn ≤ 1.4%, Si ≤ 0.35%, S ≤ 0.050, P ≤ 0.045. Q235B steel plate contains C ≤ 0.20%, Mn ≤ 1.4%, Si ≤ 0.35%, S ≤ 0.045, P ≤ 0.045. Q235C steel plate contains C ≤ 0.17%, Mn ≤ 1.4%, Si ≤ 0.35%, S ≤ 0.040, P ≤ 0.040. Q235D steel plate contains C ≤ 0.17%, Mn ≤ 1.4%, Si ≤ 0.35%, S ≤ 0.035, P ≤ 0.035.

Hot rolled S460Q steel products on sale 5*2570*8150, 5*2450*11000, 8*2100*7800, 6*1750*6000, 7*3000*7350, 6*1850*7510, 6*2750*10000, 8*2090*6640, 6*1600*11640, 8*2200*8200, 8*1500*4850, 5.5*2400*8000, 6*2780*6000, 6*2750*8000, 8*2090*7990, 10*2450*8200, 8*1750*7950, 7*3000*7320, 10*2030*6580, 08*2920*7100, 8*2200*10000， 8*2500*10000， 10*2800*6280.

In particular, the EU imports a large amount of iron ore from central and South America and Oceania, which are mainly transported by sea. The perfect port infrastructure makes the port operation cost of EU iron ore raw materials import relatively low. However, the S460Q steel steel transportation between EU Member States is mainly railway transportation, and the EU member states have established a very developed railway network and railway information infrastructure.

Phosphorus element (P element) is brought into steel by ore. Generally speaking, phosphorus is also harmful element. Although phosphorus can increase the strength and hardness of S460Q steel etc. steel, it also causes the decrease of plasticity and impact toughness. Especially at low temperature, it makes steel significantly brittle, which is called "cold brittleness". The higher the phosphorus content is, the greater the cold brittleness is. Therefore, the phosphorus content in S460Q steel etc. steel is strictly controlled.