S620Q high strength structural steel
S620Q high yield strength steel plate is a high strength quenched and tempered steel that complies with EN10025-6 standard.
In the grade of S620Q high tensile steel, the letter S represents structural steel, the number 620 represents the yield strength of 620MPa, and the letter Q represents that the steel is delivered in the quenched and tempered heat treatment state. At the same time, we can also choose the delivery state according to your technical requirements.
S620Q high strength steel can be used to manufacture low temperature resistant, high strength key components, construction machinery, mining machinery structures, etc.
HSLA Steel Plate Chemical Composition
| C | Si | Mn | Ni | P | S | Cr | Mo | V | N | Nb | Ti | Cu | Zr | B | CEV |
| max 0.2 | max 0.8 | max 1.7 | max 2 | max 0.025 | max 0.015 | max 1.5 | max 0.7 | max 0.12 | max 0.015 | max 0.06 | max 0.05 | max 0.5 | max 0.15 | max 0.005 | max 0.83 |
High Tensile Tough Plate mechanical property
| Nominal thickness (mm): | 3 - 100 | 100 - 150 |
| Rm - Tensile strength (MPa) | 700-890 | 650-830 |
| Nominal thickness (mm): | 3 - 50 | 50 - 100 | 100 - 150 |
| ReH - Minimum yield strength (MPa) | 620 | 580 | 560 |
| KV - Impact energy (J) longitud., | 0° 40 |
-20° 30 |
| A - Min. elongation Lo = 5,65 √ So (%) | 15 |
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