S690QL high strength steel plate
S690QL high strength steel plate
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- Commodity name: S690QL high strength 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.
Product introduction
Due to the materials high strength nature, using S690QL will promote leaner designed structures with increased payload capacity and energy efficiency.
The technical details of S690QL are outlined below.
S690QL - Grade Designation
The grade designation of S690QL are the following:
S = Structural Steel
690 = minimum yield strength (MPa)
Q = Quenching & Tempering
L = Low notch toughness testing temperatureTechnical data
S690QL - Chemical Composition
The chemical composition of S690QL is provided in the table below.Element
Percentage %
Element
Percentage %
C
0.20
Cu
0.50
Si
0.80
Mo
0.70
Mn
1.70
Nb*
0.06
P
0.025
Ni
2.0
S
0.015
Ti*
0.05
N
0.015
V*
0.12
B
0.0050
Zr*
0.15
Cr
1.50
* At least 0.015% of grain-refining element present. Aluminium is also one of these elements.
S690QL - Mechanical Properties
The mechanical properties of S690QL is outlined in the table below.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
S690QL - V Notch Impact Testing
The V Notch impact testing details are given in the table below.Grade
Sample Orientation
@ 0°C
@-20°C
@-40°C
@-60°C
S690QL
Longitudinal
50 J
40 J
30 J
¨C¨C
Traverse
35 J
30 J
27 J
¨C¨C
(Please note: the technical information above is for guidance only ¨C for exact specifications please check with Masteel)
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Tianjin Bohai Metal
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