40cr round bar steel bar and the difference between the other steel bar manufacturers in Shandong

40cr round bar: according to standard GB / T 3077-2008: chemical composition (mass fraction,%) C 0.37 ~ 0.44, Si 0.17 ~ 0.37, Mn 0.50 ~ 0.80, Cr0.80 ~ 1.10, Ni≤0.30. Round bar is a solid round bar with a circular section. Its specifications are expressed in millimeters of diameter, such as "50" means round steel with a diameter of 50 mm. Bar is divided into hot-rolled, forged and cold-drawn three. Hot-rolled bar specifications for the 5.5-250 mm. Of which: 5.5-25 mm small round mostly straight bundles supply, commonly used as steel, bolts and various mechanical parts; more than 25 mm round bar, mainly for the manufacture of mechanical parts or for the seamless steel pipe And the difference between the other rebar: 1 appearance is not the same, round shape round, non-ribbed pattern, the other surface of the steel profile or ribbed.This will result in a small bar and concrete bond strength, and Other steel and concrete bond strength. 2 ingredients are not the same, round steel (a steel) are ordinary low carbon steel, other steel mostly alloy steel .3 strength is not the same .Silk strength is low, the other steel high strength, That is, the same diameter of round bar compared with other bars, bar can bear less than other steel bar, but the plasticity of round bar is stronger than other bar, that is, before the bar is pulled off a larger deformation, While the other bars are much less deformed before they are pulled in. Learn More Round Steel Knowledge:

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