S355J2 Low Alloy H Beam Structural Steel

When S355J2 is made into H-beam steel (also known as H-section or I-beam with H-shaped cross-section), it is able to support large loads while maintaining structural integrity for use in construction, engineering and heavy structural applications.

The "S" in S355J2 h section steel stands for "structural steel", "355" indicates the minimum yield strength of 355 MPa (thickness ≤ 16 mm), and "J2" indicates its toughness, with a minimum impact energy of 27 joules at -20°C, ensuring its suitability for cryogenic environments.

Physical properties of S355J2 h shaped steel
Density: Approx. 7850 kg/m³ (typical value for mild steel)
Young's modulus: 190–210 GPa (190 GPa conservatively taken for design)
Hardness: Brinell NMness (HB) ranges from 146 to 187 HB, depending on processing

S355J2 H-shaped steel is produced by hot rolling and complies with the following standards:
EN 10025-2: Specifies technical delivery conditions for non-alloy structural steels.
EN 10034: Specifies tolerances on shape and dimensions for I- and H-shaped sections of structural steel.
DIN 1025-2 (HEB series) and DIN 1025-3 (HEA series): Defines the dimensions of European standard H-shaped steels with parallel flanges.

S355J2 structural h beam is usually supplied in the normalized condition (in some cases indicated as S355J2+N), which refines the grain structure, improves toughness and uniformity, and also controls the silicon content for enhanced galvanizing performance.

Key Features of S355J2 structural steel h beam

High Strength: The minimum yield strength is 355 MPa, which is superior to lower grade steels such as S235 or S275.

Excellent Toughness: The J2 designation ensures good impact resistance at sub-zero temperatures (-20°C), suitable for cold climates or dynamic loading conditions.

Weldability: The low carbon equivalent (CEV typically ≤0.47) allows easy welding with or without preheating, compatible with standard welding techniques.

Versatility: GNEE can provide a wide range of H beam sizes (e.g. HEA, HEB, HEM series), which can also be customized to meet specific project requirements.

S355J2 h beam steel structure has equivalent grades in other international standards
ASTM (USA): A572 Grade 50 or A992
DIN (Germany): St52-3 (1.0577)
GB/T (China): Q355D
IS (India): E350 (according to IS 2062)
AS/NZS (Australia/New Zealand): Grade 350 L20

GNEE Steel was established in 2008, our main products are section steel, angle steel, flat steel, wear-resistant steel, etc. We have established long-term cooperative relations with well-known steel mills and are happy to provide you with the best prices and product suggestions. You are welcome to visit our company.