With the increase of temperature, the yield limit of S275 material will decrease monotonically, but the tensile strength of S275 material will rise to a high peak value at a certain temperature, and then decrease. This peak temperature is called the blue brittleness temperature of S275 material. Near the blue brittleness temperature, the S275 material strength increases and the plasticity decreases. The elongation and section shrinkage of S275 material increase with the increase of temperature, but there is a low peak at the blue brittleness temperature. The blue brittleness temperature of low carbon steel ranges from 200 ℃ to 250 ℃. The blue brittleness of low alloy steel is not obvious as that of low carbon steel, and the blue brittleness temperature is higher.
S275 material products 2020 online supply: 6*1950*10000, 6*2000*10000, 6*2200*10000, 6*2800*12000, 7*2200*8000, 7*2920*8200, 7*2920*8780, 2200*11200, 8*2200*5730, 8*2210*11000, 8*2400*12000, 9*2300*6870, 12.5*2900*11000, 12.9*2987*10384, 13.6*2940*11455, 14*1950*10900, 14*1950*10950, 14*1950*11000, 14*1950*8000, 14*2000*13500, 22*3400*13000, 23.1*2590*7790, 25*1600*9300.
Hot-rolled steel sheet / cold-rolled steel sheet: Steel ingots or slabs are difficult to deform at normal temperature and difficult to process. They need to be heated to 1100 ° C to 1250 ° C for rolling. This S275 material rolling process is called hot rolling. Rolling at room temperature is generally understood as cold rolling. However, from the point of view of metallurgy, the boundary between hot rolling and cold rolling should be distinguished by the temperature of metal recrystallization, that is, rolling below the recrystallization temperature is cold rolling; Rolling above the recrystallization temperature is hot rolling.
The development S275 material of the company comes from the resource advantage, service advantage, logistics advantage and brand advantage established over the years, and it is also inseparable from the full support of new and old customers. We will uphold the support of all sectors of society, actively provide users with S275 material high-quality and efficient services, work together for win-win, and create a better tomorrow!