S355NL HEB260x260x10x17.5 structural steel beam
S355NL h steel profile Material characteristics
Chemical composition: C≤0.22%, Si≤0.55%, Mn≤1.60%, P≤0.025%, S≤0.025%, Cu≤0.55%; low sulfur and phosphorus design to improve welding performance and low temperature toughness.
Implementation standard: European standard EN 10025-3 fine grain normalized steel, in line with EN 10034 steel standard.
Low temperature toughness: -50℃ impact energy ≥27J (NL grade), suitable for severe cold environment.
High strength weldability: normalizing rolling process ensures fine grain structure, and cracks are not easy to occur during welding.
HEB260x260x10x17.5 h beam section Specifications
Model: HEB260 H-section steel beam
Dimensions: 260mm (height) × 260mm (width) × 10mm (web thickness) × 17.5mm (flange thickness)
Weight: about 106.3kg/m (calculated according to European standard density)
Yield strength: ≥355MPa
Tensile strength: 470-630MPa
Elongation: ≥22%
S355NL HEB260x260x10x17.5 steel h profile Applications
Heavy structures: bridge beams, high-rise building support frames; metallurgical environmental protection equipment, mining machinery chassis.
Special environments: low temperature areas (such as Arctic projects), port crane rail beams.
Industrial manufacturing: ship deck support, pressure vessel support.
Comparison between domestic and foreign
Domestic corresponding grades: Q355E (formerly Q345E), but S355NL has better low temperature toughness.
Special requirements: The Z25/Z35 suffix indicates tear resistance in the thickness direction and is suitable for earthquake-resistant design.
