S890Q, S890QL and S890QL1 steel are European grade quenched and tempered high yield strength structural steels, equivalent to the Chinese grade Q890. They are steel grades in the EN 10025-6 standard, S means structural steel, 890 is the yield value, unit MPa, Q means delivery conditions, L represents the specified minimum value of impact energy when the temperature is not lower than -50℃, and L1 represents the specified minimum value of impact energy when the temperature is not lower than -60℃.
Smelting analysis of chemical composition of S890Q, S890QL, S890QL1 steel plates:
| C | Si | Mn | P | S | Ni | Cr | Mo | Cu | Nb | V | Ti | N | Zr | B |
| ≤0.2 | ≤0.8 | ≤1.7 | ≤0.02 | ≤0.010 | ≤2 | ≤1.5 | ≤0.7 | ≤0.5 | ≤0.06 | ≤0.12 | ≤0.05 | ≤0.015 | ≤0.15 | ≤0.005 |
Mechanical properties of S890Q, S890QL, S890QL1 steel plates:
Steel plate thickness 3-50mm
ReH(MPa)≥890
Rm(MPa) 940-1100
A(%)≥11
Shock temperature -40℃
Akv(J)≥30 longitudinal;
Horizontal: Akv≥27J
Steel plate thickness>50-100
ReH(MPa)≥830
Rm(MPa) 880-1100
A(%)≥11
Akv(J)≥30 longitudinal;
Horizontal: Akv≥27J
S890Q shock temperature -40℃; S890QL shock temperature -40℃; S890QL1 shock temperature -60℃.
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