As the thickness and hardness of hot rolled steel coils A36 increase, the tendency to crack at the cutting edge increases. In order to prevent the hot rolled steel coils A36 from cutting cracks, preheating should be carried out before hot rolled steel coils A36 cutting. Special attention should be paid to preheating to make the entire hot rolled steel coils A36 interface evenly heated to avoid local overheating in the area contacting the heat source. If the whole hot rolled steel coils A36 cannot be preheated, the partial preheating method can be used instead.
hot rolled steel coils A36, S235JR VS S275JR VS S355JR plates in yield strength: For plate thickness ≤16mm, the min. yield strength of S235JR plates is 235 Mpa, S275JR plates is 275 Mpa, S355JR plates is 355 Mpa. The yield strength of S235JR S275JR S355JR plates reduces with the increasing of plate thickness. S235JR VS S275JR VS S355JR plates in tensile strength: For plate thickness 3-100mm, the tensile strength of S235JR plates is 360-510 Mpa, S275JR plates is 410-560 Mpa, S355JR plates is 470-630 Mpa. For plate thickness 100-150mm, the tensile strength of S235JR plates is 350-500 Mpa, S275JR plates is 400-540 Mpa, S355JR plates is 450-600 Mpa.
Steel material has an irreplaceable role in many projects, especially in building construction, bridge cofferdams, road construction, foundation pit support, garden engineering, excavator paving, subgrade engineering and other projects. Therefore, the quality of hot rolled steel coils A36 steel material can not be ignored, so how should customers identify the authenticity of steel when choosing steel materials? Today we would like to analyze it together. So that it can help you to purchase satisfied steel materials in the future.
According to the latest statistics of alacero, the consumption of finished steel hot rolled steel coils A36 products in Latin America in 2019 was 64.2 million tons, down 5% from 67.6 million tons in 2018. The decline in steel consumption in the region reflects the economic contraction of Latin American countries, especially the three major economies: Mexico, Argentina and Brazil.
