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Basic information of S620Q high-strength steel plate

Posted:2021-10-21 17:13:27
S620Q high-strength steel plate
1. S620Q high-strength steel plate executive standard: EN10025-6. It is rarely used by domestic industrial enterprises. The corresponding national GB standards for such low-alloy high-strength steel plates are Q620D low-alloy high-strength steel and Q620E low-alloy high-strength steel.

2. Implementation of flaw detection standards; China (JB4730 GB/T2970), the United States (A435, A577, A578), Japan (JISGo801, JISG0901), Germany SEL072, and the United Kingdom. According to the specific requirements of customers: high-temperature drawing of the steel plate, simulation of post-weld heat treatment and control of element content and other performance control of the steel plate. Similar low-alloy high-strength grade materials are: S590Q, S690Q, S690QL, S690QL1, Q690D, Q550D, Q590D, etc.

3. The chemical composition and mechanical properties of S620Q high-strength steel plate:
Grade   Chemical composition % MAX
  C Si Mn P S B Cr Cu Mo Nb Ni Ti
S620Q   0.22 0.86 1.8 0.03 0.017 0.006 1.6 0.55 0.74 0.07 2.1 0.07
  Mechanical properties MIN
  Yield strength (Mpa) Tensile strength (Mpa) Elongation %
TH(MM) >3≤50 >50≤100 >100≤150 >3 ≤50 >50≤100 >100≤150 15
  620 580 560 700-890 650-830

4. The use of S620Q high-strength steel plate:
S620Q steel plate is used to manufacture low-temperature resistant, high-strength key components, construction machinery, mining machinery structures, etc. It is a high-strength structural steel plate.
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