Materials database

High-strength quenched and tempered structural steel — YS 690 MPa min. Part of EN 10025-6 series (S500Q to S960Q). Good weldability despite high strength (CEV controlled). Used for mobile cranes, mining equipment, truck chassis, bridge components, and any structure where weight reduction through higher strength is critical. "Q" = quenched, "L" variants add low-temp impact.

High-strength quenched and tempered fine-grain structural steel with minimum yield strength of 690 MPa. Used for heavily loaded structures like mobile cranes, mining equipment, bridges, and pressure vessels.

High-strength quenched and tempered fine-grained structural steel with minimum yield strength 690 MPa and guaranteed impact toughness at -60°C (QL1 designation). The most demanding low-temperature variant of the S690 series. Used for arctic offshore structures, mobile cranes operating in extreme cold, heavy lifting equipment, and safety-critical structural applications requiring both high strength and exceptional low-temperature toughness.

The highest-strength grade in the EN 10149-2 HSLA series. 700 MPa yield with good cold formability. TMCP for ultra-fine grain structure. Used for telescopic cranes, truck frame rails, dirt-moving equipment, farm equipment, and any application requiring maximum weight reduction in cold-formed steel.

Ultra-high-strength quenched and tempered fine-grained structural steel with minimum yield strength 890 MPa. Q designation indicates impact testing at room temperature. Just below S960 in the EN 10025-6 hierarchy. Used for mobile cranes, aerial work platforms, mining equipment, and heavy transport vehicles where maximum weight reduction is desired without the extreme welding precautions of S960.

Ultra-high-strength quenched and tempered fine-grained structural steel with minimum yield strength 890 MPa and guaranteed impact toughness at -40°C. One of the highest strength grades in EN 10025-6, just below S960. Used for mobile cranes, aerial work platforms, heavy transport vehicles, mining machinery, and offshore lifting equipment where maximum weight reduction is critical. Weldable with careful parameter control.

Ultra-high-strength alloy special steel for cold forming with minimum yield strength 960 MPa. The highest strength grade in EN 10149-2. Thermomechanically rolled delivery. Must not be heated above 400°C to preserve mechanical properties. Extraordinary strength-to-weight ratio for cold-formed components. Used in the most demanding automotive, crane, mining, and military vehicle applications where every kilogram counts.

Ultra-high-strength quenched structural steel — YS 960 MPa min. Near the top of EN 10025-6 range. Approaches tool-steel-level strength while remaining weldable (with strict preheat/interpass control). Used for the most weight-critical structural applications: mobile crane booms, mining equipment, military vehicles, and specialty trailer chassis. Significantly reduces section thickness vs S355.

Ultra-high-strength quenched and tempered fine-grained structural steel with minimum yield strength 960 MPa. QL designation indicates impact testing at -40°C. Used for mobile cranes, heavy lift equipment, offshore wind turbine towers, mining machinery, and weight-critical structural applications. Weldable with appropriate precautions (preheating, low hydrogen). Dramatically reduces component weight compared to conventional structural steels.

12% Cr martensitic creep-resistant steel for steam turbine applications. Operates to ~580°C continuous. Combines corrosion resistance of 12% Cr with creep strength from Mo+V. Used for steam turbine blades, bolts, discs, and high-pressure steam piping in fossil power plants.