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  • Q420C PLATE
  • Q420C STEEL

Q420C

  • Steel Standard: GB/T1591
  • Rolling Type: High strength low alloy structural steels
  • Thickness: 6mm-400mm
  • Width: 1500mm-4200mm
  • Length: 3000mm-18000mm
  • Heat Treatment: As rolled/Control-rolled/Normalised/N+T/QT
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■ Overview
High strength low alloy structural steel plate Q420C owned the minimum yield point above 420 Mpa for the thickness equal or belows 16mm,and tensile strength shall be within 520-680 Mpa.Normlised Q420C is mainly for heavy steel plate for improve the steel property when rolling.
■ Full Data
Technical Requirements & Additional Services:
♦ Low temperature impacting test
♦ Cutting and welding as per end user’s demands
♦ More striction on some chemical elements contains
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Ultrasonic test under GB/T2970,JB4730,EN 10160,ASTM A435,A577,A578 
■ Techicals

Mechnical property for Q420C low alloy structural steel:

Thickness (mm)
Q420C ≤ 16 > 16 ≤ 35 > 35 ≤ 50 >50
Yield strength (≥Mpa) 420 400 380 360
Tensile strength (Mpa) 520-680

Chemical composition for Q420C low alloy structural steel (Heat Analysis Max%)

Main chemical elements composition of Q420C
C Si Mn P S V Nb Ti Al (min.) Cr Ni
0.20 0.55 1.00-1.70 0.035 0.035 0.02-0.20 0.015-0.060 0.02-0.20 0.015 0.40 0.70

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