HEA300 HEB300 S355JR material h beam

S355JR h beam material is a low alloy high strength structural steel defined in accordance with European standard EN 10025-2, where "JR" indicates that the Charpy V-notch impact test energy value at ambient temperature (+20°C) is at least 27J.

S355JR material h beam has good weldability and mechanical properties and is widely used in construction, bridges, machinery manufacturing and other fields requiring high strength and good toughness.

HEA300 h section steel
Dimensions:
Height (h): 300 mm
Width (b): 298 mm
Web thickness (tw): 8.5 mm
Flange thickness (tf): 14 mm
Application features:
HEA series steel has a narrow flange width and is suitable for applications with limited space requirements.
Due to its compact design, it is particularly suitable for making various mechanical parts and components, such as crane arms, excavator buckets, etc.

HEB300 h shaped steel
Dimensions:
Height (h): 300 mm
Width (b): 300 mm
Web thickness (tw): 10 mm
Flange thickness (tf): 16 mm

Application features:
Compared to HEA steel, HEB steel has wider flanges, providing larger cross-sectional area and higher section modulus.
This design makes it very suitable for bearing large bending moments and shear forces, so it is widely used in large building structures, bridge projects as beams, columns and other key supporting components.

Mechanical properties (S355JR material)
Yield strength (ReH) ≥ 355 MPa
Tensile strength (Rm) between 470 and 630 MPa
Elongation after fracture (A) ≥ 21%
Impact absorption energy KV2 (20°C) ≥ 27 J

Application areas
HEA300 h beam structure: more suitable for applications with limited space requirements, such as some industrial equipment or structural parts that require efficient use of space.

HEB300 h section beam: Due to its larger cross-sectional size and better mechanical properties, it performs better in long span or heavy load conditions, such as the foundation frame of large buildings, the main load-bearing structure of bridges, etc.