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S690ql Steel Plate

S690QL Dillimax 690T is a fine-grained quenched and tempered steel plate notable for its high strength. S690QL plates are used in a wide variety of engineering applications where strength is important – including cranes, critical structural components in building and stadia and pipes and gates in hydroelectric projects.
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  • S690ql

S690ql Steel Plate supplied by us are accepted by clients in various spheres of the industries ranging from basic industries such as sugar, paper, textile, dairy, engineering to more complex such as oil & gas, petrochemical, chemical & fertilizers, power generation and nuclear industries. We are also have huge ready stock of Chrome Moly Steel Plate, Boiler Plate, HIC plate, Pressure Vessel Steel plate, Abrasion Resistant Steel Plates, Offshore & Structural Steel Plate, Quenched & Tempered Steel plate, High Nickel Alloy plate, Stainless Steel plate, Duplex Stainless Steel Plate, Clad plate and 16MO3 Steel Plate.


S690 QL is a high yield structural steel grade produced in compliance with EN 10025: 6: 2004. The material is heat treated using the quench and temper process and has good bending and welding properties. Due to the materials high strength nature, using S690QL will promote leaner designed structures with increased payload capacity and energy efficiency.

S690QL Dillimax 690T is a fine-grained quenched and tempered steel plate notable for its high strength. S690QL plates are used in a wide variety of engineering applications where strength is important – including cranes, critical structural components in building and stadia and pipes and gates in hydroelectric projects. It is a high strength steel for fixed and mobile equipment under heavy loading.

S690ql Steel Plate Grade and Specification

ItemQuenched and Tempered Steel Plate
MaterialS690ql Steel Plate, 780E Welten Plate, Weldox 700 Steel Plate
Thickness5mm to 150mm
Width1,500mm to 2,500mm
Length6,000mm to 12,000mm
Export toIran, Saudi Arabia, United Arab Emirates, Singapore, Malaysia


Quenched and Tempered Steel Plate Grades Available Ex-Stock

  • S690ql Steel Plate

  • 780E Welten Plate

  • Weldox 700 Steel Plate


Grade Designation

  • S = Structural Steel

  • 690 = minimum yield strength (MPa)

  • Q = Quenching & Tempering

  • L = Low notch toughness testing temperature


Chemical Composition

GradeCSiMnPSNBCrCuMoNb*NiTi*V*Zr*
S690QL0.200.801.700.0250.0150.0150.00501.500.500.700.062.00.050.120.15

* At least 0.015% of grain-refining element present. Aluminium is also one of these elements.


Mechanical Properties

DesignationMechanical Properties (ambient temperature)
Steel NameSteel NumberMin. Yield Strength Reh MPaTensile Strength Rm MPaMin. % elongation after fracture
Nominal thickness (mm)Nominal thickness (mm)
≥3 ≤50≥50 ≤100≥100 ≤150≥3 ≤50≥50 ≤100≥100 ≤150
S690QL1.8931690650630770/940760/930710/90014


V Notch Impact Testing

GradeSample Orientation@ 0°C@-20°C@-40°C@-60°C
S690QLLongitudinal50 J40 J30 J––
Traverse35 J30 J27 J––


Typical Application of S690ql Steel Plate

  • bucket parts for power

  • dipper sticks

  • shovels or cranes

  • turbine scroll cases and Unfired pressure vessels

  • penstocks

  • fabricated bridges tower and building members

  • components for earthmoving or transport equipment


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