S690QL

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.

Grade Designation
  • S = Structural Steel
  • 690 = minimum yield strength (MPa)
  • Q = Quenching & Tempering
  • L = Low notch toughness testing temperature

Chemical Composition of S690QL

 %
C0.20
Si0.80
Mn1.70
P0.025
S0.015
N0.015
B0.0050
Cr1.50
Cu0.50
Mo0.70
Nb0.06
Ni2.0
Ti0.05
V0.12
Zr0.15

Mechanical Properties of S690QL
Designation Mechanical 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 Deg C@ -20 Deg C@ -40 Deg C@ -60 Deg C
S690QLLongitudinal50J40J30J
Transverse35J30J27J