
High strength quenched and tempered steel plate can be easily welded and fabricated.
We often find that steel plate to EN 10025 S690QL is called different things by different engineers. Plate to this specification and grade is variously described as:
- High Strength Quenched and Tempered Steel Plate
- High Yield Quenched and Tempered Steel Plate
- High Strength Structural Steel Plate,
- High Yield Structural Steel Plate
- High Strength Low Alloy Steel Plate
- HSLA
Composition
Chemical Composition – EN10025 S690QL
Content % (ladle analysis), maximum
C | Si | Mn | P | S | B | Cr | Cu | Mo |
---|---|---|---|---|---|---|---|---|
0.20 | 0.80 | 1.70 | 0.020 | 0.010 | 0.005 | 1.50 | 0.50 | 0.70 |
N | Nb* | Ni | Ti* | V* | Zr* | |||
0.015 | 0.06 | 2.0 | 0.05 | 0.12 | 0.15 |
Properties
Mechanical Properties – EN10025 S690QL
Plate Thickness mM | Yield StrengthReH (MPa) | Tensile Strength Rm (MPa) | Elongation A5 % minimum | Impact Strength J, Minimum |
---|---|---|---|---|
3 to50 | 690 | 770 - 940 | 14 | 30 @ -40º C |
50to 100 | 650 | 760 - 930 | 14 | 30 @ -40º C |
100 to 150 | 630 | 710 - 900 | 14 | 30 @ -40º C |