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S620QLChemical Composition | ||||||||
Grade | The Element Max (%) | |||||||
C | Si | Mn | P | S | N | B | Cr | |
S620 QL | 0.20 | 0.80 | 1.70 | 0.020-0.025 | 0.010-0.015 | 0.015 | 0.005 | 1.50 |
Cu | Mo | Nb | Ni | Ti | V | Zr | ||
0.50 | 0.70 | 0.06 | 2.0 | 0.05 | 0.12 | 0.15 | ||
Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
Grade | S620QLMechanical Property | |||||
Thickness | Yield | Tensile | Elongation | Min Impact Energy
| ||
S620 QL | mm | Min Mpa | Mpa | Min % | -40 | 30J |
3<t≦50 | 620 | 700-890 | 15 | -40 | 30J | |
50<t≦100 | 580 | 700-890 | 15 | -40 | 30J | |
100<t≦150 | 560 | 650-830 | 15 | -40 | 30J | |
Equivalent steel grade of S620QL | |||
Europe | Germany | France | Sweden |
FeE 620 V KT | TStE 620 V | E 620T | |
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