Stock JIS SM570 steel plate specification

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Q420B material is a low-alloy high-strength structural steel. , Q420 is not high-strength steel, it is still low-carbon steel Its tensile strength has been improved a bit The tensile strength of Q235 steel is 235MPa, and the tensile strength of Q420B steel is 420MPa Q420B low alloy steel has high strength and good fatigue resistance; high toughness and low brittle transition temperature; good Cold forming performance and welding performance; has good corrosion resistance and certain wear resistance,JIS SM570 steel plate.

JIS SM570 steel plate,Compared with JIS SM570 steel plate, boiler steel plates should have the following properties: (1) High medium temperature strength: low and medium pressure boiler drums use steel with a lower yield point, high pressure boilers use steel with a high yield point (2) Good plasticity, impact toughness, cold bending and welding performance (3) The notch sensitivity is small, that is, the sensitivity to the stress concentration caused by the opening of the steel plate surface and the welding of the pipe head is small,JIS SM570 steel plate.

JIS SM570 steel plate,The cold bending method is mainly used to produce cold-formed section steel and welded pipe. The cold bending method is to bend the steel strip or steel plate into various cross-section shapes by the cold bending machine in the cold state. If the steel pipe is bent into a circular, square or other hollow shape and welded by a proper welding method, it is a welded pipe. The advantages of cold bending: first, the cold-formed section steel is light in weight and large in bearing capacity, and it can save metal by replacing the hot-rolled section steel; second, it can produce all kinds of extremely thin, extremely wide and complex section steel which can not be produced by hot rolling.
JIS SM570 steel plate

NM450 steel plate thickness≦80mm. NM450 wear-resistant steel plates are used in engineering machinery, mining machinery, coal mining machinery, environmental protection machinery, metallurgical machinery, abrasive tools, bearings and other product parts.
NM450 Cchemical composition: C≤0.35; Si≤0.70; Mn≤1.70; P≤0.025; S≤0.010; Cr≤1.10; Ni≤0.80; Ti≤0.050; Mo≤0.55; B: 0.0005-0.006; Al≥0.010.
Mechanical properties: Tensile strength Rm / MPa ≧ 25; -20 ℃ impact energy absorption (longitudinal) KV2 / J ≧ 24
Surface Brinell hardness HBW: 420-480JIS SM570 steel plate

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