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S690QL – High Yield Steel
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.
