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■ Overview
Ultrasonic test Q620D steel plate,Q620D steel sheet,Q620D metal plate mainly used for high tensile welding structural projects.Medium Q620D steel plate and Q620D metal plate shall be done four edges cutting without chips and burrs before delivery.
■ Full Data
Technical Requirements & Additional Services for Q620D steel plate:
♦ Quenching and tempering heat treatment
♦ Low temperature impacting test at -20 ℃
♦ 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
♦ Quenching and tempering heat treatment
♦ Low temperature impacting test at -20 ℃
♦ 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 GB/T 16270 Q620D steel plate:
|
Thickness(mm) |
Yield strength (≥Mpa) |
Tensile strength (Mpa) |
Elongation in ≥, A % |
|
T≤50 |
620 |
700-890 |
15 |
|
50<T≤100 |
580 |
700-890 |
|
|
100<T |
560 |
650-830 |
►Chemical composition for GB/T 16270 Q620D steel plate (Heat Analysis Max%)
|
Main chemical elements composition of GB/T 16270 Q620D steel plate |
||||||
|
C |
Si |
Mn |
P |
S |
Cu |
Cr |
|
0.20 |
0.80 |
1.70 |
0.025 |
0.015 |
0.50 |
1.50 |
|
Ni |
Mo |
B |
V |
Nb |
Ti |
- |
|
2.00 |
0.70 |
0.005 |
0.12 |
0.06 |
0.05 |
- |
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