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 than 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.

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Applications

With its 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.

Typical Analysis

Carbon	0.20% max	Chromium	1.50% max
Manganese	1.70% max	Nickel	2.00% max
Silicon	0.80% max	Molybdenum	0.70% max
Phosphorous	0.02% max
Sulphur	0.01% max

Forming

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.

Welding

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.

Typical Mechanical Properties

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

Typical Impact Properties

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

Certification

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

Quality Assured Supply

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

S690QL / S690QL1 High Yield Strength Steel

Form of Supply