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EN 10025-6 S550QL1 High yield strength steel plate owned the minimum yield strength at 550 Mpa and tensile strength within 640-820 Mpa.The necessary technical requirement when rolling steel plate S550QL1 contains quenching and tempering heat treatment,low temperature impacting test under minus 60 centigrade.
S550QL1 Chemical Composition | ||||||||
Grade | The Element Max (%) | |||||||
C | Si | Mn | P | S | N | B | Cr | |
S550 QL1 | 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 |
| |
Grade | S550QL1Mechanical Property | |||||
Thickness | Yield | Tensile | Elongation | Min Impact Energy
| ||
S550 QL1 | mm | Min Mpa | Mpa | Min % | -60 | 30J |
3<t≦50 | 550 | 640-820 | 16 | -60 | 30J | |
50<t≦100 | 530 | 640-820 | 16 | -60 | 30J | |
100<t≦150 | 490 | 590-770 | 16 | -60 | 30J | |
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