At present, many futures formulas have different calculation formulas for rebar. The approximate formula is: rebar price = 1.65*PB powder price +0.5* coke price+processing cost.
The cost calculated by this formula will be higher than the actual one, because steel mills not only use PB powder, but also use a lot of iron ore for ore blending. The actual grade of sintered mixture will be much lower than that of PB powder, generally 55-60%, so the cost is lower. At the same time, this formula does not take into account the lump ore and pellet ore into the furnace, nor does it take into account the amount of scrap steel added, so this formula deviates from the reality, but if the trend is simply considered, this formula can be used as a reference.
If it is to be very accurate, it is necessary to investigate the ratio of sintering pellet blast furnace converter and the processing cost of each process in a large number of steel mills, and then carry out weighted average, which will be closer to reality.
1mm thickness: 7.8kg of carbon steel and 7.93kg of stainless steel ... steel has a wide range of uses and varieties. According to the different cross-sectional shapes, steel products are generally divided into four categories: profiles, plates, pipes and metal products. Steel is a material with certain shape, size and properties, which is made of ingot, billet or steel through pressure processing. Most steel products are deeply processed. Billets (so-called pig iron billets) contain impurities such as carbon, phosphorus, sulfur and nitrogen, generally 2%~5%. To make rebar, it is necessary to reduce the content of these impurities, especially phosphorus, sulfur, nitrogen and other impurities, which will make the performance of steel very poor. The carbon content of rebar is generally between 0.5%- 1%. Therefore, one ton of billet will lose 1.5~4% weight. 1.6 iron ore +0.5 ton coke+1050 = 1.6 iron ore +0.4 ton coke+1300. The difference between the two formulas lies in the sum of 0. 1 ton coke. = 1.6 iron ore +0.53 coke +0. 1 scrap +857 The 0.53 in this formula is definitely high, and I don't know how to calculate the value of 857.
In fact, there are so many formulas, which just shows the complexity of calculating the cost per ton of steel. Each enterprise will have great differences according to the material, technology, production time and geographical differences, and various formulas can only represent the general average situation in the industry. I think the second formula is more reliable.