S690QL and S690QL1 are high-strength low-alloy steel plate materials produced in compliance with EN 10025:6,has high strength, excellent toughness, good welding properties and low temperature toughness,widely used in bridges, ships, machinery manufacturing and other fields.
| Standard | EN 10025-6 | |
| Grade Designation | S690QL Material Specification |
S = Structural Steel 690 = minimum yield strength (MPa) Q = Quenching & Tempering L = Low notch toughness testing temperature |
| S690QL1 Technical Parameters |
S=Structural Steel 690 = minimum yield strength 690 MPa Q = Quenching & Tempering L1= Lower notch toughness testing temperatures to -60ºC |
|

S690QL S690QL1 High Strength Steel Plate Specifications
Length:6,000 milimeter - 12,000 milimeter
Width:1,500 milimeter - 2,500 milimeter
Thickness:8-50 mm
Heat Treatment:Q+T(quenched and Tempered)

The chemical composition of S690QL and S690QL1 is similar, but S690QL1 has slightly higher carbon and boron content than S690QL.
S690QL1 S690QL Material Properties
| S690QL | C | Si | Mn | P | S | B | Cr | Cu | Mo |
| 0.20 | 0.80 | 1.70 | 0.020 | 0.010 | 0.005 | 1.50 | 0.50 | 0.70 | |
| N | Nb | Ni | Ti | V | Zr | ||||
| 0.015 | 0.06 | 2.0 | 0.05 | 0.12 | 0.15 |
| S690QL1 | C | Si | Mn | P | S | B | Cr | Cu | Mo |
| 0.20 | 0.80 | 1.70 | 0.020 | 0.010 | 0.005 | 1.50 | 0.50 | 0.70 | |
| N | Nb | Ni | Ti | V | Zr | ||||
| 0.015 | 0.06 | 2.0 | 0.05 | 0.12 | 0.15 |
S690QL1 S690QL Steel Mechanical Properties
| Plate Thickness | Yield Strength | Tensile Strength | Elongation | Impact Strength |
| mm | ReH (MPa) | Rm (MPa) | A5 % Minimum | J, Minimum |
| 3 to 50 | 690 | 770 - 940 | 14 | 30 @ -40º C |
| > 50 to 100 | 650 | 760 - 930 | 14 | 30 @ -40º C |
| > 100 to 150 | 630 | 710 - 900 | 14 |
30 @ -40º C |
Packaging Details:Standard export seaworthy packing or as required.
Port: Shanghai ,Tianjin, Qingdao port,any port in China is available
Supply Ability:10000 Ton/Tons per Month.
MOQ:1 Pcs.

S690QL S690QL1 Steel Applications
- Heavy road vehicles: chassis, dumper bodies.
- Cranes construction: booms of mobile cranes.
- Structural steelworks: bridges, bridge components, components for offshore structures.
- Pressure vessels: fixed and transportable storage tanks, vessels.
- Power plants: penstocks, spiral cases.
- Materials handling: lifting and mobile equipment.
- Mining and earthmoving equipment: roof supports.
- Agricultural equipment and trailers.
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