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Technical Specifications
Product Overview
Metallurgical Characteristics
EN S275 is a non-alloy structural steel with a ferritic-pearlitic microstructure, providing excellent balance of strength, ductility, and weldability. The steel's composition is optimized for structural applications with controlled carbon content (≤ 0.21%) ensuring good formability and weldability without preheating requirements for most applications.
Manufacturing Process
MetalZenith produces EN S275 steel through electric arc furnace melting followed by ladle metallurgy for precise chemistry control. The steel undergoes controlled rolling at temperatures between 1050-1200°C, followed by controlled cooling to achieve optimal mechanical properties. Our continuous casting process ensures homogeneous structure and minimal segregation.
Heat Treatment Options
Standard delivery condition is hot rolled (+AR) with no additional heat treatment required. Optional stress relieving at 580-650°C can be performed for improved dimensional stability. Normalizing at 890-940°C followed by air cooling can enhance mechanical properties for demanding applications.
Welding Characteristics
EN S275 exhibits excellent weldability with all conventional welding processes including SMAW, GMAW, GTAW, and SAW. Carbon equivalent (CEV) typically ranges from 0.35-0.42%, allowing welding without preheating for sections up to 25mm thickness. Post-weld heat treatment is generally not required for structural applications.
Quality Standards & Testing
All EN S275 steel from MetalZenith complies with EN 10025-2:2019 standard and undergoes comprehensive testing including chemical analysis, tensile testing, impact testing, and dimensional inspection. Mill test certificates (MTC 3.1) are provided with full traceability. Additional testing such as ultrasonic inspection, magnetic particle testing, and macro examination available upon request.
🧪 Chemical Composition
| Element | Content (%) | Specification |
|---|---|---|
| Carbon (C) | ≤ 0.21 | EN 10025-2 |
| Manganese (Mn) | ≤ 1.50 | EN 10025-2 |
| Silicon (Si) | ≤ 0.55 | EN 10025-2 |
| Phosphorus (P) | ≤ 0.030 | EN 10025-2 |
| Sulfur (S) | ≤ 0.030 | EN 10025-2 |
| Nitrogen (N) | ≤ 0.012 | EN 10025-2 |
| Copper (Cu) | ≤ 0.55 | Residual |
| Chromium (Cr) | ≤ 0.30 | Residual |
| Nickel (Ni) | ≤ 0.30 | Residual |
| Molybdenum (Mo) | ≤ 0.10 | Residual |
⚙️ Mechanical Properties
| Property | Value | Test Standard |
|---|---|---|
| Yield Strength (ReH) | 275-355 MPa | EN ISO 6892-1 |
| Tensile Strength (Rm) | 410-560 MPa | EN ISO 6892-1 |
| Elongation (A80) | ≥ 23% | EN ISO 6892-1 |
| Impact Energy (KV) | ≥ 27 J at 20°C | EN ISO 148-1 |
| Brinell Hardness (HB) | 120-160 HB | EN ISO 6506-1 |
| Young's Modulus | 210 GPa | EN 1993-1-1 |
| Shear Modulus | 81 GPa | EN 1993-1-1 |
| Poisson's Ratio | 0.30 | EN 1993-1-1 |
| Fatigue Limit | 160 MPa | EN 1993-1-9 |
🔬 Physical Properties
| Property | Value | Temperature Range |
|---|---|---|
| Density | 7.85 g/cm³ | 20°C |
| Melting Point | 1510°C | - |
| Thermal Conductivity | 54 W/m·K | 20°C |
| Specific Heat Capacity | 500 J/kg·K | 20°C |
| Thermal Expansion Coefficient | 12×10-6/K | 20-100°C |
| Electrical Resistivity | 0.16 µΩ·m | 20°C |
| Magnetic Permeability | Ferromagnetic | 20°C |
| Curie Temperature | 770°C | - |
| Thermal Diffusivity | 13.7×10-6 m²/s | 20°C |
📏 Product Specifications
| Specification | Available Options | Standards |
|---|---|---|
| Product Forms | Plates, Sheets, Bars, Beams, Channels, Angles | EN 10025-2 |
| Plate Thickness | 3-100 mm | EN 10029 |
| Sheet Thickness | 0.5-3 mm | EN 10131 |
| Bar Diameter | 6-300 mm | EN 10060 |
| Width Range | 600-3200 mm | EN 10029 |
| Length Range | 2000-18000 mm | Custom |
| Surface Finish | Hot Rolled, Pickled, Shot Blasted | EN 10163 |
| Dimensional Tolerance | Class A, B, C | EN 10029 |
| Edge Condition | Mill Edge, Cut Edge, Slit Edge | EN 10029 |
| Delivery Condition | Hot Rolled (+AR) | EN 10025-2 |
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Our Advantages in Processing EN S275
Advanced Electric Arc Furnace Technology
MetalZenith employs state-of-the-art electric arc furnace technology with precise temperature control and automated charging systems, ensuring optimal steel chemistry and consistent quality. Our advanced ladle metallurgy station provides fine-tuning of chemical composition for superior mechanical properties.
Comprehensive Quality Control System
Our integrated quality management system includes real-time monitoring of rolling parameters, automated dimensional inspection, and comprehensive mechanical testing. Every batch undergoes rigorous testing including tensile strength, yield strength, elongation, and impact energy verification.
Global Supply Chain & Custom Solutions
MetalZenith offers flexible supply solutions with strategically located warehouses worldwide and custom cutting, machining, and surface treatment services. Our technical team provides engineering support for material selection and application-specific requirements.
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