High yield strength S620QL,S620QL steel plate,S620QL steel sheet under EN 10025-6 owned the minimum yield strength at 620 Mpa and tensile strength within 700-890 Mpa.The necessary technical requirement when rolling steel plate S620QL contains quenching and tempering heat treatment,low temperature impacting test under minus 40 centigrade.The additional technical has Ultrasonic examination.
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Gnee steel Grade : |
EN10025-6 S620QL |
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Specification (mm) |
THK: 3 to 300, Width: 1500 to 4050, Length: 3000 to 27000 |
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Standard: |
Technical delivery conditions for flat products of high yield strength structural steels in the quenched and tempered condition |
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Approval By Third Party |
ABS, DNV, GL, CCS, LR , RINA, KR, TUV, CE |
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Classification: |
Hot rolled products of structural steels |
S620QLChemical Composition
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S620QLChemical Composition |
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Grade |
The Element Max (%) |
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C |
Si |
Mn |
P |
S |
N |
B |
Cr |
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S620 QL |
0.20 |
0.80 |
1.70 |
0.020-0.025 |
0.010-0.015 |
0.015 |
0.005 |
1.50 |
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Cu |
Mo |
Nb |
Ni |
Ti |
V |
Zr |
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0.50 |
0.70 |
0.06 |
2.0 |
0.05 |
0.12 |
0.15 |
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Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
S620QL Mechanical Property
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Grade |
S620QL Mechanical Property |
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Thickness |
Yield |
Tensile |
Elongation |
Min Impact Energy
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S620 QL |
mm |
Min Mpa |
Mpa |
Min % |
-40 |
30J |
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3<t≦50 |
620 |
700-890 |
15 |
-40 |
30J |
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50<t≦100 |
580 |
700-890 |
15 |
-40 |
30J |
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100<t≦150 |
560 |
650-830 |
15 |
-40 |
30J |
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