hot rolled s355jr steel plate non-alloy steel

Q235 is a kind of carbon steel. hot rolled s355jr steel plate, 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.

Steel plate numerical control cutting processing, hot rolled s355jr steel plate steel plate cutting processing can be divided into semi-automatic flame cutting, automatic numerical control cutting, laser cutting, water cutting.The thickness range of steel plate can be cut 20-650mm steel plate, the main steel plate processing material is divided into Q235B plate, Q345B low alloy plate, 45# carbon bond plate.

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The manufacturing process of hot rolled s355jr steel plate hot-rolled steel plates is simpler and cheaper than cold-rolled steel plates. However, foreign experience believes that the hot-rolling method is only suitable for the production of steel plates with a thickness of 1.6 mm or more, and it is uneconomical for thinner hot rolled s355jr steel plate steel plates. The surface quality and dimensional accuracy are not as good as cold-rolled steel plates. Hot-rolled steel plates on automobiles, in addition to frame longitudinal beams, cross beams and various brackets, also stamping wheel rims, roulettes, etc. that require a certain strength, and the surface is not stressed. Not too demanding shell cover, etc.