EN10025-6 High Yield Steel S690QL

EN10025-6 High Yield Steel S690QL

1.High Yield Steel

EN 10025 PT6:2004

S690QL | S890QL | S960QL | S1100QL

2.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.

Please refer to the technical details below referring to S690QL.

3.Grade Designation

S = Structural Steel

690 = minimum yield strength (MPa)

Q = Quenching & Tempering

L = Low notch toughness testing temperature

4.Chemical Composition

Grade C Si Mn P S N B Cr Cu Mo Nb* Ni Ti* V* Zr*
S690QL 0.20 0.80 1.70 0.025 0.015 0.015 0.0050 1.50 0.50 0.70 0.06 2.0 0.05 0.12 0.15

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

5.Mechanical Properties

Designation Mechanical Properties (ambient temperature)
Steel Name Steel Number Min. Yield Strength Reh MPa Tensile Strength Rm MPa Min. % elongation after fracture
Nominal thickness (mm) Nominal thickness (mm)
≥3 ≤50 ≥50 ≤100 ≥100 ≤150 ≥3 ≤50 ≥50 ≤100 ≥100 ≤150
S690QL 1.8931 690 650 630 770/940 760/930 710/900 14

6.V Notch Impact Testing

Grade Sample Orientation @ 0°C @-20°C @-40°C @-60°C
S690QL Longitudinal 50 J 40 J 30 J ––
Traverse 35 J 30 J 27 J ––

(Please note: the technical information above is for guidance only – for exact specifications please check with our Sales Team)

The steel is used in a variety of sectors including…

Heavy transportation

Machine building

Steel constructions

Lifting equipment

7.For more information about S690QL high yield steel or to receive a competitive quotation, please contact us.