S890QL Structural Steel

S890QL is an extra-high strength structural steel with a minimum yield strength of 890 MPa.

Min Yield Strength 890 MPa

High Tensile Strength

Good Weldability

Weight Reduction

Product Overview

S890QL takes high-strength structural engineering to the next level with a minimum yield strength of 890 MPa. This grade is designed for applications where weight reduction is critical and extreme loads must be supported. It is commonly used in the lifting industry for crane booms and jib sections where every kilogram saved allows for a longer reach or heavier lift.

The production of S890QL involves precise alloying and heat treatment to achieve its ultra-high strength while maintaining acceptable levels of ductility and toughness. This ensures that the structure remains safe and reliable even under peak loads.

Fabrication with S890QL requires strict adherence to welding procedures. Due to its sensitivity to heat input, cooling times (t8/5) must be carefully monitored to prevent softening in the heat-affected zone. Convergence Steel can provide technical guidance on welding parameters to ensure the integrity of your fabrication.

Typical Applications

Crane Booms

Aerial Platforms

Heavy Duty Trailers

Technical Specifications

Mechanical Properties

Thickness	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation
3-50mm	890 Min	940-1100	11% Min

Chemical Composition (Max %)

C	Si	Mn	P	S	Cr	Ni	Mo
0.20	0.80	1.70	0.020	0.010	1.50	2.0	0.70

Frequently Asked Questions

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Quick Specs

GradeS890QL
Yield StrengthMin 890 MPa
ApplicationHeavy Lifting
ThicknessCustom

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Key Tags

S890QL PlatesUltra High Strength SteelYield Strength 890 MPaCrane Boom SteelSpecialty Structural Steel

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