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  • Q420A PLATE
  • Q420A STEEL

Q420A

  • 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
Structural steel plate Q420A is mainly used for manufacturing the plants of factory ,the common constructure and construction machinery and equipment.The tensile strength of low alloy steel plate Q420A is within 520-680 Mpa,and the minimum yield strength is 420Mpa for thickness equal and belows 16mm.
■ 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 Q420A low alloy structural steel:

Thickness (mm)
Q420A ≤ 16 > 16 ≤ 35 > 35 ≤ 50 >50
Yield strength (≥Mpa) 420 400 380 360
Tensile strength (Mpa) 520-680

Chemical composition for Q420A low alloy structural steel (Heat Analysis Max%)

Main chemical elements composition of Q420A
C Si Mn P S V Nb Ti Cr Ni
0.20 0.55 1.00-1.70 0.045 0.045 0.02-0.20 0.015-0.060 0.02-0.20 0.40 0.70

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