S690QL / S690QL1  High Yield Strength Steel


S690QL S690QL1 is a quenched and tempered high strength steel commonly supplied as plate.  With its high yield of minimum 690MPa it offers better strength that standard carbon steel grades. S690 has good forming and welding qualities. This grade offers good impact properties at sub zero temperatures.

We welcome export enquiries for S690 alloy steel. Contact our sales office and consult our shipping policy for further details.

Form of Supply

West Yorkshire Steel are stockholders and suppliers of S690 in plate which can be cut to your required sizes.

Contact our experienced sales team who will assist you with your enquiry.

  • Plate

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Applications

With it’s high yield and high tensile properties S690 is used for many applications and structures where weight savings are required. Popular in the mining, agricultural and construction industries for applications such as dumper bodies and chassis, lifting equipment, cranes and jaw crushers.


Carbon 0.20% max Chromium 1.50% max
Manganese 1.70% max Nickel 2.00% max
Silicon 0.80% max Molybdenum 0.60% max
Phosphorous 0.02% max
Sulphur 0.01% max

Bending and forming is possible using suitably powerful equipment. When bending transversal to the rolling direction it is recommended to form to a maximum of 2 x thickness.  For longitudunal to the rolling direction a maximum of 3 x thickness is recommended. S690 is not ideally suited for hot forming over 600°C. Forming at over this temperature can have an effect on the mechanical properties of the steel and re hardening and tempering may be required.


With its low carbon content S690 is suitable for welding. Welding areas should be cleaned of any grease and rough edges, pre heating is required.  We recommend you contact your welding consumables supplier who should provide you full assistance and information on welding S690 steel.


Plate Size
mm
Tensile
N/mm²
Yield
N/mm²
Elongation
%
up to 50 770-940 690 14
50 to 100 760-930 650 14
over 100 720-900 630 14


Steel
Name
Sample
Direction
0°C -20°C -40°C -60°C
S690QL Longitudinal
Transverse
50J
35J
40J
30J
30J
27J
S690QL1 Longitudinal
Transverse
60J
40J
50J
35J
40J
30J
30J
27J


S690 high yield strength steel is available with a BS EN 10204 3.1 mill certificate, please request when placing any orders.


S690QL/QL1 is supplied in accordance with our ISO 9001:2015 registration.