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gb t1591 q420b steel chemical composition

Description: GB/T1591 Q420B Carbon and Lowalloy Highstrength Steel Any request for GB/T1591 Q420B Carbon and Lowalloy Highstrength Steel Plate Email: [email protected] and Tel:008637165652655 Inquiry If you have any request or doubts,Please send message to us,It will be checked for you on time.

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    Q420 Steel Introduction. Q420 steel is a Chinese steel grade of Low Alloy High Strength Structural Steel, Yield Strength is 420 MPa, parameters are tested with 16mm diameter steel bars or steel plates, and tensile strength is 520 680 Mpa, the material density is 7.85 g/cm3. According to GB/T 1591 2008, Q420 has 5 quality levelsQ420A, Q420B, Q420C, Q420D and Q420E.

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