S355JR H-beam is the European standard wide-flange beam for structural and constructional use. Specified by EN 10025-2 with a minimum yield strength of 355 MPa (51 ksi) at room temperature and 27 J Charpy impact at +20 °C, S355JR is the workhorse of European building codes (Eurocode 3 / EN 1993). Compared to the lower-strength S235JR, S355JR allows 30–40% lighter sections for the same load — saving steel tonnage and freight on large projects.
Product Overview
S355JR is a non-alloy structural steel defined in EN 10025-2 (“Hot rolled products of structural steels — Part 2: Technical delivery conditions for non-alloy structural steels”). The “JR” suffix indicates the Charpy V-notch impact energy of 27 J at +20 °C tested on longitudinal specimens. The grade is fully killed, fine-grained, and normalized or as-rolled.
The “H” in H-beam describes the cross-section shape (wide flange, H-shaped profile). EN standards use the designation HEA, HEB, HEM for the European wide-flange series; the S355JR material can be applied to any of these profiles plus standard IPE (I-beams) and IPN (narrow flange beams).
Standard Profile Series
- HEA (light wide flange): HEA 100 to HEA 1000. Weights from 16 kg/m to 272 kg/m.
- HEB (heavy wide flange): HEB 100 to HEB 1000. Weights from 20 kg/m to 314 kg/m.
- HEM (extra-heavy): HEM 100 to HEM 1000. Weights from 41 kg/m to 349 kg/m.
- IPE (I-beam, narrow flange): IPE 80 to IPE 600. Weights from 6 kg/m to 122 kg/m.
- IPN (standard I-beam, tapered flange): IPN 80 to IPN 600. Weights from 6 kg/m to 124 kg/m.
Custom dimensions available on request (minimum mill quantity 50–100 tonnes).
Chemical Composition (Heat Analysis)
| Element | Maximum % (S355JR ≤ 16 mm) | Maximum % (16–40 mm) |
|---|---|---|
| Carbon (C) | 0.20 | 0.20 |
| Silicon (Si) | 0.55 | 0.55 |
| Manganese (Mn) | 1.60 | 1.60 |
| Phosphorus (P) | 0.035 | 0.035 |
| Sulfur (S) | 0.035 | 0.035 |
| Nitrogen (N) | 0.012 | 0.012 |
| Carbon Equivalent (CEV) | 0.47 | 0.47 |
For thickness above 40 mm, CEV is allowed up to 0.50. For better formability and welding, micro-alloying with Nb, V, or Ti may be used (still meeting S355JR chemistry limits).
Mechanical Properties
| Property | Requirement (S355JR) |
|---|---|
| Yield Strength Rp0.2 (≤ 16 mm) | ≥ 355 MPa (51 ksi) |
| Yield Strength Rp0.2 (16–40 mm) | ≥ 345 MPa |
| Yield Strength Rp0.2 (40–63 mm) | ≥ 335 MPa |
| Yield Strength Rp0.2 (63–80 mm) | ≥ 325 MPa |
| Yield Strength Rp0.2 (80–100 mm) | ≥ 315 MPa |
| Tensile Strength Rm | 470–630 MPa (≤ 3 mm) / 470–630 MPa (3–100 mm) |
| Elongation A | ≥ 22% (3–40 mm) / ≥ 21% (40–63 mm) |
| Charpy V-notch Impact (20 °C, longitudinal) | ≥ 27 J |
For sub-zero impact toughness, use S355J0 (0 °C, 27 J) or S355J2 (-20 °C, 27 J). For low-temperature arctic service, use S355K2 (-20 °C, 40 J) or S355NL (-50 °C, 30 J).
Reference Profile Dimensions (HEB Series)
| Profile | Height h (mm) | Width b (mm) | Web s (mm) | Flange t (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| HEB 100 | 100 | 100 | 6 | 10 | 20.4 |
| HEB 120 | 120 | 120 | 6.5 | 11 | 26.7 |
| HEB 140 | 140 | 140 | 7 | 12 | 33.7 |
| HEB 160 | 160 | 160 | 8 | 13 | 42.6 |
| HEB 180 | 180 | 180 | 8.5 | 14 | 51.2 |
| HEB 200 | 200 | 200 | 9 | 15 | 61.3 |
| HEB 220 | 220 | 220 | 9.5 | 16 | 71.5 |
| HEB 240 | 240 | 240 | 10 | 17 | 83.2 |
| HEB 260 | 260 | 260 | 10 | 17.5 | 93.0 |
| HEB 280 | 280 | 280 | 10.5 | 18 | 103.1 |
| HEB 300 | 300 | 300 | 11 | 19 | 117.0 |
| HEB 360 | 360 | 300 | 12.5 | 22.5 | 141.8 |
| HEB 400 | 400 | 300 | 13.5 | 24 | 155.3 |
| HEB 500 | 500 | 300 | 14.5 | 28 | 187.5 |
| HEB 600 | 600 | 300 | 15.5 | 30 | 212.0 |
| HEB 700 | 700 | 300 | 17 | 32 | 240.5 |
| HEB 800 | 800 | 300 | 18 | 33 | 262.8 |
| HEB 900 | 900 | 300 | 18.5 | 35 | 286.7 |
| HEB 1000 | 1000 | 300 | 19 | 36 | 313.8 |
Tolerance per EN 10034: length ±50 mm (≤ 12 m), ±100 mm (> 12 m); flange width ±3 mm; web thickness -0.5 mm / +1.0 mm; weight ±4%.
Manufacturing Standards
- EN 10025-2 — material specification for non-alloy structural steels.
- EN 10034 — dimensional and tolerance standard for HEA / HEB / HEM.
- EN 1993-1-1 (Eurocode 3) — design standard for steel structures.
- ASTM A36 / A572 — American equivalents (A36 ≈ S275JR; A572 Gr 50 ≈ S355JR).
- JIS G3101 SS400 / G3106 SM490 — Japanese equivalents (SS400 < S355JR; SM490 ≈ S355JR).
- GB/T 706 Q355B — Chinese equivalent (Q355B ≈ S355JR).
Welding and Fabrication
S355JR is readily weldable using standard arc-welding processes (SMAW, GMAW, FCAW, SAW). Preheating is normally not required for thickness up to 25 mm. Best practices:
- Use matching-strength electrodes (e.g., AWS E7018 for manual stick; GMAW wire ER70S-6).
- For thicker sections (> 40 mm), consider low-hydrogen electrodes (E7018 or equivalent).
- Preheating above 30 mm thickness: 100–150 °C if ambient temperature is below 5 °C.
- Interpass temperature below 250 °C for optimum HAZ toughness.
- PWHT not normally required for building structures; required for pressure equipment per ASME.
- Cutting: oxy-fuel, plasma, laser all workable. Cold bending with radius ≥ 3 × flange thickness.
Typical Applications
- Industrial building columns and beams.
- Warehouse racking and mezzanine structures.
- Bridge girders and deck framing.
- High-rise building floor framing and perimeter columns.
- Wind turbine tower internal flanges and base plates.
- Crane runway beams and gantry girders.
- Offshore platform substructures (above splash zone).
- Heavy equipment frames and supports.
Quality Assurance and Testing
- Heat analysis and product analysis per EN 10025-2.
- Tensile test — yield, ultimate, elongation per EN ISO 6892-1.
- Charpy V-notch impact at +20 °C (JR designation) per EN ISO 148-1.
- Dimensional inspection per EN 10034.
- Visual inspection for surface defects per EN 10163.
- Optional ultrasonic testing per EN 10160 for special applications.
Mill test certificate per EN 10204-3.1. CE marking under EN 10025-1 + CPR 305/2011 is provided for EU projects. Third-party inspection by SGS, BV, TUV, or Intertek available on request.
Marking and Traceability
Each H-beam is color-coded or stamped with the following information per EN 10025:
- Manufacturer mark or logo
- Standard designation (e.g., “EN 10025-2 S355JR”)
- Heat number
- Profile designation (HEA / HEB / HEM / IPE / IPN)
- Length in mm
Packaging and Shipping
- Standard export packing: bare beams bundled with steel strapping; 4–6 straps per bundle; bundle weight 2–5 tonnes.
- Container loading: 40-ft HC fits approximately 20–25 tonnes of HEB 200–300. Larger beams require 40-ft open-top or flat-rack containers.
- Bulk vessel: for orders above 3,000 tonnes, loaded directly into bulk carrier holds or on deck with timber dunnage.
- Wooden spacers between beams prevent damage during transit.
- Optional shot-blasting and primer coating (red oxide, zinc-rich epoxy) for outdoor storage.
Order S355JR H-Beam from Huaxia-Steel
Huaxia-Steel supplies S355JR H-beams (HEA, HEB, HEM, IPE, IPN) from certified Chinese mills in stock lengths 6 m, 9 m, 12 m, and 15 m, plus custom cut-to-length up to 18 m. We also offer in-house processing: shot-blasting, primer painting, drilling, coping, and weld-prep. Every beam ships with EN 10204-3.1 certificate and CE marking for EU delivery. Send your profile list and quantity to [email protected] for a mill-direct quote within 24 hours.
Related products: H-Beam (general) · I-Beam (IPE) · Steel Channel · ASTM A36 Plate
