S690QL is a high-yield structural steel grade manufactured in accordance with EN 10025-6:2004. It is quenched and tempered to deliver exceptional strength, allowing for leaner structural designs with increased payload capacities and energy efficiency. It also features good bending and welding properties.
Key Specifications
Grade Designation Breakdown:
S: Structural Steel
690: Minimum yield strength (690" MPa" )
Q: Quenched & Tempered
L: Low notch toughness testing temperature verification
Mechanical Properties:
Minimum Yield Strength (ReH): 690" MPa" (for nominal thickness ≥3" mm" to ≤50" mm" )
Tensile Strength (Rm): 770-940" MPa" (for nominal thickness ≥3" mm" to ≤50" mm" )
Min. Elongation After Fracture: 14%
V-Notch Impact Testing (Longitudinal / Traverse):
@ 0°C: 50" J"/35" J"
@ -20°C: 40" J"/30" J"
@ -40°C: 30" J"/27" J"


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