Corten EN 10025-5 steel, renowned for its atmospheric corrosion resistance, possesses a fundamental physical property crucial for engineering design: its density. Understanding this value is essential for accurate weight estimation, load calculations, and structural analysis. The density of Corten EN 10025-5 steel is 7850 kilograms per cubic meter (kg/m³), equivalent to 7.85 grams per cubic centimeter (g/cm³) or approximately 0.284 pounds per cubic inch (lb/in³). This figure aligns with typical structural carbon and low-alloy steels, serving as a critical baseline parameter.
Why Density Matters for Corten EN 10025-5
Density (ρ) is mass per unit volume. For Corten EN 10025-5, the standard density of 7850 kg/m³ is vital for:
Weight Calculation: Accurately determining component and overall structure weight (Weight = Volume x Density).
Structural Load Analysis: Calculating dead loads for foundation design and stress analysis.
Transportation & Logistics: Planning shipping costs and handling requirements based on mass.
Material Cost Estimation: Providing a basis for comparing material costs per unit weight.
Design Integration: Ensuring compatibility with other structural elements designed using similar density assumptions.
This density value is relatively consistent across the various grades within the EN 10025-5 standard (like S355J0W, S355J2W, S355K2W). Minor variations can occur due to specific alloying element concentrations and production methods, but 7850 kg/m³ is the universally accepted value for engineering calculations unless specific project testing dictates otherwise.
Related Physical Properties
While density is central, other physical properties influence how Corten EN 10025-5 performs thermally:
- Coefficient of Thermal Expansion (α)
Approximately 12 x 10⁻⁶ per °C (6.7 x 10⁻⁶ per °F). This defines how much the steel expands or contracts with temperature changes, critical for designing expansion joints and accommodating thermal stresses.
- Thermal Conductivity (k)
Around 45-50 W/(m·K). This moderate value indicates how readily heat transfers through the material, relevant for thermal modeling in specific applications.
Mechanical Properties of Corten EN 10025-5 Steel
While density provides the fundamental mass characteristic, the mechanical performance of Corten EN 10025-5 steel is critical for its structural integrity and suitability in demanding applications. Meeting the requirements of EN 10025-5, this steel offers a robust combination of strength, ductility, and toughness, alongside its signature corrosion resistance.
The key mechanical properties for common grades within the Corten EN 10025-5 classification (e.g., S355J0W, S355J2W, S355K2W) are summarized in the table below. These values represent the minimum specified requirements according to the standard. Actual values achieved in production can often be higher.
| Property | Symbol | Value (Minimum) | Unit | Notes / Conditions |
| Yield Strength | ReH | 355 | MPa | For nominal thicknesses ≤ 16mm. Strength may decrease slightly with increasing thickness (as per standard rules). |
| Tensile Strength | Rm | 470 – 630 | MPa | The range encompasses the minimum requirements for different grades/thicknesses. |
| Elongation at Fracture | A | 19% (thickness ≤ 3mm)20% (3mm < t ≤ 50mm)22% (50mm < t ≤ 100mm) | % | Measured on proportional gauge length (Lo = 5.65√So). Values depend on product form and thickness (t). |
| Impact Toughness (Charpy V-Notch) | KV | 27 J (S355J0W, S355J2W)40 J (S355K2W) | Joules | Tested at -20°C. Specific minimum energy absorption depends on grade and sub-grade designation. |
| Atmospheric Corrosion Resistance | – | 4x to 8x better than carbon steel C25/30 | Factor | Resistance factor compared to structural carbon steel, leading to significantly reduced maintenance needs. |
The Unique Advantage of IBC Metal Group’s Corten EN 10025-5
Understanding the theoretical density and properties is essential, but realizing these specifications consistently in your project requires a partner committed to excellence. IBC Metal Group stands apart in supplying genuine, certified Corten EN 10025-5 steel:
Material DNA Profiling: Beyond standard mill certificates, we offer optional independent batch validation. Advanced spectroscopy verifies exact chemical composition (crucial for corrosion performance) and confirms density conformity, providing unparalleled traceability and confidence. Receive a unique “Material DNA” report for your specific shipment.
Performance-Centric Logistics: We don’t just ship steel; we protect its integrity. Our specialized weathering steel handling protocols prevent surface contamination during transport and storage, ensuring the patina forms correctly. We offer tailored weathering performance warranties backed by technical support.
Engineered Solutions Partnership: Access our in-house metallurgical engineers. Go beyond basic supply for technical consultation on optimizing designs using Corten’s density and properties, weld procedure development, patina management, and long-term performance forecasting specific to your project environment.
Get Precise Corten Steel Solutions
The density of Corten EN 10025-5 steel (7850 kg/m³) is the cornerstone for efficient structural design. Combining this with its proven strength, toughness, and exceptional atmospheric corrosion resistance makes it a premier choice for bridges, facades, containers, and artistic structures where longevity and low maintenance are critical.
Ready to build with confidence using certified Corten EN 10025-5? Request your free, project-specific “Material Integrity Brief” from IBC Metal Group today. This includes certified density data, mill reports, and our unique options for independent validation and technical support. Contact us now for a quote and experience the IBC difference in performance-driven steel supply.
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