Materials database

Normalized fine-grain structural steel. Same yield as S355JR/J2 but with guaranteed fine-grain structure from normalizing. Better weldability and impact toughness than standard S355. Used for bridges, cranes, heavy structural steelwork, and pressure vessels where normalized delivery is specified.

Normalized fine-grain structural steel with 355 MPa yield and -50°C impact toughness. The most widely used fine-grain grade in EN 10025-3. Workhorse for offshore, bridges, cranes, and wind turbine towers in cold climates. Better low-temp toughness than S355J2.

Thermomechanically rolled weldable fine-grained structural steel with minimum yield strength 420 MPa. M designation indicates TMCP delivery. Bridges the gap between S355M and S460M, offering a balance of strength, weldability, and cost. Low carbon equivalent minimizes preheating requirements. Used for offshore platforms, bridges, cranes, and heavy construction machinery.

HSLA hot-rolled steel for cold forming. Between S355MC and S500MC in the EN 10149-2 strength ladder. Thermomechanically rolled for fine grain + good formability. Used for truck chassis components, crane booms, agricultural equipment, and structural cold-formed parts.

Thermomechanically rolled fine-grain structural steel — ReH >=420 MPa with Charpy at -50°C (KV >=27J). Between S355ML and S460ML in the TM strength range. Lower CEV than S420N = better weldability. Used for crane booms, offshore structures, bridge girders, and pressure vessels requiring high strength with excellent low-temperature toughness and weldability.

Normalized fine-grain structural steel — ReH >=420 MPa with Charpy at -20°C (KV >=27J). Between S355N and S460N. Fine grain from Al/Nb/V micro-alloying + normalizing. Used for bridges, crane structures, pressure vessels, and heavy structural applications where TM-rolling (ML grades) is not available or where normalizing is required by code.

High-strength normalized fine-grain structural steel. 420 MPa yield with -50°C impact toughness. Between S355NL and S460NL in the strength ladder. Used for bridges, crane structures, pressure vessels, and structural components in cold environments.

Higher-strength structural steel with 450 MPa yield, 0°C impact. Bridges the gap between S355 and S460 in the EN 10025-2 series. Used for heavily loaded structures, crane components, and building steelwork where S355 is insufficient but normalized fine-grain (EN 10025-3) is not required.

Thermomechanically rolled weldable fine-grained structural steel with minimum yield strength 460 MPa. The highest standard strength level in EN 10025-4. M designation indicates TMCP delivery condition. Excellent weldability with low carbon equivalent despite high strength. Used for offshore wind turbine foundations, heavy crane booms, bridge girders, and weight-optimized structural applications. Equivalent to DIN StE460TM.

HSLA hot-rolled steel for cold forming. Between S420MC and S500MC in the EN 10149-2 strength ladder. Thermomechanically rolled for fine grain + good formability at 460 MPa yield. Used for crane booms, truck chassis, heavy agricultural equipment, and load-bearing cold-formed structures.

Thermomechanically rolled fine-grain structural steel — ReH >=460 MPa with Charpy at -50°C (KV >=27J). TM rolling = fine grain without normalizing = higher strength at lower CEV = better weldability than S460N. Used for offshore jackets, heavy crane booms, bridges in cold climates, and large welded structures needing high strength + low-temp toughness.

Highest-strength normalized fine-grain structural steel in EN 10025-3. YS 460 MPa with guaranteed weldability and impact toughness. Used for heavy crane structures, offshore platforms, bridges, and any high-load structure where normalized delivery is required.

High-strength normalized fine-grain structural steel with 460 MPa yield and impact testing at -50°C. The highest-strength grade in the EN 10025-3 normalized series. Used for offshore platforms, wind turbine towers, arctic bridges, cranes, and heavy steel structures in cold climates.

Quenched and tempered fine-grained structural steel with minimum yield strength 460 MPa. Q designation indicates impact testing at room temperature. Entry-level grade of the EN 10025-6 QT steels. Used for bridges, cranes, structural hollow sections, and general heavy construction where higher strength than S355 is needed with good weldability.

Quenched and tempered fine-grained structural steel with minimum yield strength 460 MPa and guaranteed impact toughness at -40°C (QL designation). Same strength as S460Q but with improved low-temperature properties through tighter P and S control. Used for bridges, offshore structures, and crane booms operating in cold climates.

High-strength low-alloy (HSLA) hot-rolled steel for cold forming. Thermomechanically rolled for fine grain structure. 500 MPa yield strength with excellent cold formability. Used for automotive chassis, truck frames, crane booms, and agricultural equipment.

Quenched and tempered fine-grained structural steel with minimum yield strength 500 MPa. Q designation indicates impact testing at room temperature. Combines good weldability with significantly higher strength than conventional S355 grades. Used for hydraulic supports, construction machinery, crane components, heavy vehicles, and mining equipment where weight reduction is beneficial.

Quenched and tempered fine-grained structural steel with minimum yield strength 500 MPa and guaranteed impact toughness at -40°C (QL designation). Tighter P and S control than S500Q for improved low-temperature performance. Used for construction and mining machinery, crane booms, heavy vehicle chassis, and structural components in cold climate applications.

High yield strength thermomechanically rolled steel for cold forming with minimum yield strength 550 MPa. The highest alloy quality grade in EN 10149-2 (grades above 550 are alloy special steels). Fine-grained microstructure provides excellent cold bending, folding, and flanging properties. Used for automotive chassis components, crane booms, trailer frames, agricultural machinery, and structural cold-formed sections.

Quenched and tempered fine-grained structural steel with minimum yield strength 550 MPa. Q designation indicates impact testing at room temperature. Intermediate strength grade between S500 and S620 in the EN 10025-6 series. Used for hydraulic supports, construction machinery, crane components, and heavy vehicle chassis where higher strength than S500 is needed.

Quenched and tempered fine-grained structural steel with minimum yield strength 550 MPa and guaranteed impact toughness at -40°C (QL designation). Tighter P and S limits than S550Q for improved low-temperature performance. Used for construction and mining machinery, crane booms, and heavy structural components in cold climate applications.

High yield strength alloy special steel for cold forming with minimum yield strength 600 MPa. Thermomechanically rolled. Classified as alloy special steel per EN 10020 (unlike S550MC and below which are alloy quality steels). Used for demanding automotive structural components, heavy-duty trailer and truck chassis, crane and lifting equipment, and mining machinery where high strength with cold formability is critical.

Quenched and tempered fine-grained structural steel with minimum yield strength 620 MPa. Q designation indicates impact testing at room temperature. High-performance grade bridging the gap between S550 and S690. Used for heavy-duty crane booms, mining equipment, structural components requiring weight optimization, and safety-critical applications.

Quenched and tempered fine-grained structural steel with minimum yield strength 620 MPa and guaranteed impact toughness at -40°C (QL designation). Tighter impurity control for low-temperature service. Used for crane booms in cold climates, offshore lifting equipment, and structural applications requiring both high strength and sub-zero toughness.