Hight Strength Low Alloy Steel-PRODUCT CENTER-Chengshun Metal

GB/T1591 Q420 contains five different steel grades as Q420A,Q420B,Q420C,Q420D and Q420E.Structural steel Q420D shall be done impacting test at low temperature minus 20 degree centigrade.Normalised heat treatment suggested to be done for low alloy steel plate Q420D in heavy thickness.

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Q420E steel plate

Q420E high strength low alloy structural steel owned minimum tensile strength at 520 Mpa and minimum yield strength at 420 Mpa for thickness equal or belows 16 millimeters.When rolling steel plate Q420E,the impact test shall be done at minus 40 centigrade.

GB/T1591 Q460 contains three different steel grades as Q460C,Q460D and Q460E.Structural steel Q460D shall be done impacting test at low temperature minus 20 degree centigrade.Normalised heat treatment suggested to be done for low alloy steel plate Q460D in heavy thickness,Quenched and tempered is also adopt when end users demand.

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SM400A steel plate

Weldable structural carbon steel plate SM400A is under steel standard JIS G3106.For the steel plate thickness equal or below 16mm,the minimum yield strength for steel plate SM400A shall be above 245Mpa,for the thickness between 16mm and 40mm,the minimum yield strength shall be 235 Mpa,and for the thickness above 40mm,the minimum yield point of steel SM490A shall be 215 Mpa.When rolling carbon steel plate Carbon steel plate SM400A, would completely according to steel standard JIS G3106 and mill test certificate would be issued under format EN 10204 TYPE 3.1.

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Q460E steel plate

Q460E high strength low alloy structural steel owned minimum tensile strength at 550 Mpa and minimum yield strength at 460 Mpa for thickness equal or belows 16 millimeters.When rolling steel plate Q460E,the impact test shall be done at minus 40 centigrade.

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