Latham Steel stands out as a top manufacturer and supplier in Hamilton, New Zealand, offering high-performance S1100QL steel sheets and plates that are built for extreme-strength structural and load-bearing tasks. This ultra-high-strength steel, known as S1100QL, is quenched and tempered, boasting remarkable toughness, impressive yield strength, and excellent fatigue resistance. Latham Steel guarantees precise dimensional tolerances, consistent surface quality, and full compliance with EN 10025-6 standards, making these plates ideal for heavy machinery, lifting equipment, advanced engineering, and specialized industrial structures. With its superior strength-to-weight ratio, S1100QL allows for the creation of lightweight yet incredibly strong components that can handle the toughest operating conditions.
S1100QL steel features a low carbon content, enhanced by alloying elements like chromium, nickel, molybdenum, and manganese, which contribute to its exceptional hardenability. After undergoing quenching and tempering, it achieves a minimum yield strength of about 1100 MPa along with very high tensile strength. This steel offers excellent impact toughness, consistent hardness, and strong resistance to brittle fracture. Its refined microstructure ensures reliable fatigue performance under cyclic loads. When proper heat-controlled welding techniques are applied, S1100QL retains its structural integrity and stability, making it perfect for applications that demand extreme strength and durability.
| Material | EN 10025-6 S960QL |
| Standards |
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| Dimension Range |
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| SSAB Brand |
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| Test certificates | EN 10204 3.1/2.2 |
| Brands | JSW, Dillinger, Thyssen, SAIL, TATA, JSPL,Essar, POSCO,Uttam, Clabecq, and Mills |
| Mn | 1.70 |
| Si | 00.80 |
| P | 00.020 |
| C | 00.20 |
| S | 00.010 |
| B | 00.0050 |
| N | 00.015 |
| V | 00.12 |
| Cu | 00.50 |
| Cr | 1.50 |
| Mo | 00.70 |
| Ni | 2.0 |
| Nb | 00.06 |
| Ti | 00.05 |
| Zr | 00.15 |
| Elongation A5(min %) | Yield strength Rp0.2(min MPa) | Thickness of material (mm) | Tensile strength Rm(MPa) |
| 12% | 960 MPa | 4.0 – 53.0 mm | 980 – 1150 MPa |
| 10% | 850 MPa | 53.1 – 120.0 mm | 900 – 1100 MPa |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
S1100QL sheets and plates find their place in industries that need ultra-high-strength steel capable of handling severe mechanical loads. You’ll commonly see them in crane booms, telescopic arms, heavy lifting systems, mining equipment, high-strength truck bodies, and specialized transport structures. They’re also utilized in defense equipment, offshore structures, advanced engineering systems, and precision-designed components where maximizing load capacity while minimizing weight is crucial.
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Latham Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Hamilton, New Zealand.
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