EN 1.8881 steel is an alloy steel formulated for primary forming into wrought products. 1.8881 is the EN numeric designation for this material. P690QL1 is the EN chemical designation.
Features of P690QL1:
High Strength :
P690QL1 has a minimum yield strength of 690 MPa , making it ideal for applications requiring high load-bearing capacity and resistance to deformation.
Toughness :
The material is quenched and tempered to ensure excellent toughness, even at low temperatures. This makes it suitable for use in harsh environments, such as offshore or Arctic conditions.
Weldability :
P690QL1 is designed to be weldable, though it may require preheating and post-weld heat treatment (PWHT) to avoid issues like hydrogen-induced cracking (HIC) or reduced toughness in the heat-affected zone (HAZ).
Fine-Grained Structure :
The fine-grained microstructure of P690QL1 contributes to its high strength and toughness, as well as its ability to withstand dynamic and impact loads.
Corrosion Resistance :
While P690QL1 is not inherently corrosion-resistant like stainless steel, it can be coated or treated to enhance its resistance to environmental degradation.
Mechnical property for P690QL1 steel plate:
| Thickness (mm) | |||
| P690QL1 | ≤ 50 | > 50 ≤ 100 | > 100 |
| Yield strength (≥Mpa) | 690 | 670 | 630 |
| ≤ 100 | > 100 | ||
| Tensile strength (Mpa) | 770-940 | 720-900 | |
Chemical composition for P690QL1 steel plate (Heat Analysis Max%)
| Main chemical elements composition of P690QL1 steel plate | |||||||
| C | Si | Mn | P | S | B | N | Cr |
| 0.20 | 0.80 | 1.70 | 0.020 | 0.010 | 0.005 | 0.015 | 1.50 |
| Cu | Mo | Nb | Ni | Ti | V | Zr | |
| 0.30 | 0.70 | 0.06 | 2.50 | 0.05 | 0.12 | 0.15 | |
