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Technical Specifications
Product Overview
Metallurgical Characteristics
EN S235 is a non-alloy structural steel with a ferritic-pearlitic microstructure, providing excellent balance of strength, ductility, and weldability. The steel exhibits fine grain structure achieved through controlled rolling and cooling processes, ensuring consistent mechanical properties throughout the material thickness.
Manufacturing Process
MetalZenith produces EN S235 using electric arc furnace steelmaking followed by ladle metallurgy treatment for precise chemistry control. The steel undergoes continuous casting, hot rolling with controlled cooling, and optional normalizing treatment. Our advanced process control systems monitor temperature, rolling parameters, and cooling rates to ensure optimal microstructure development.
Heat Treatment Options
EN S235 is typically supplied in hot-rolled condition (+AR) or normalized condition (+N). Normalizing at 880-920°C followed by air cooling refines the grain structure and improves mechanical properties. Stress relief annealing at 580-650°C can be performed to reduce residual stresses from welding or forming operations.
Welding and Fabrication
Excellent weldability with all conventional welding processes including SMAW, GMAW, GTAW, and SAW. Carbon equivalent (CEV) typically ≤ 0.42%, ensuring good weldability without preheating for most applications. Post-weld heat treatment is generally not required for structural applications.
Quality Standards and Testing
MetalZenith maintains strict quality control per EN 10025-2 requirements. All products undergo chemical analysis, tensile testing, impact testing, and dimensional inspection. Non-destructive testing including ultrasonic inspection is available upon request. Full material traceability and 3.1 certification provided with each shipment.
🧪 Chemical Composition
| Element | Composition (%) | Maximum (%) |
|---|---|---|
| Carbon (C) | 0.15-0.20 | 0.22 |
| Manganese (Mn) | 0.40-0.80 | 1.40 |
| Silicon (Si) | 0.10-0.40 | 0.55 |
| Phosphorus (P) | - | 0.045 |
| Sulfur (S) | - | 0.045 |
| Nitrogen (N) | - | 0.012 |
| Copper (Cu) | - | 0.55 |
| Chromium (Cr) | - | 0.30 |
| Nickel (Ni) | - | 0.30 |
| Molybdenum (Mo) | - | 0.10 |
⚙️ Mechanical Properties
| Property | Value | Test Standard |
|---|---|---|
| Yield Strength (ReH) | 235-355 MPa | EN ISO 6892-1 |
| Tensile Strength (Rm) | 360-510 MPa | EN ISO 6892-1 |
| Elongation (A80) | ≥ 26% | EN ISO 6892-1 |
| Elongation (A5) | ≥ 23% | EN ISO 6892-1 |
| Impact Energy (KV) | ≥ 27 J at 20°C | EN ISO 148-1 |
| Brinell Hardness (HB) | 110-140 HB | EN ISO 6506-1 |
| Young's Modulus | 210 GPa | EN 10002-1 |
| Shear Modulus | 81 GPa | EN 10002-1 |
| Poisson's Ratio | 0.30 | EN 10002-1 |
| Fatigue Limit | 180 MPa | EN 6072 |
🔬 Physical Properties
| Property | Value | Temperature |
|---|---|---|
| Density | 7.85 g/cm³ | 20°C |
| Melting Point | 1510°C | - |
| Thermal Conductivity | 54 W/m·K | 20°C |
| Thermal Expansion Coefficient | 12×10-6/K | 20-100°C |
| Specific Heat Capacity | 500 J/kg·K | 20°C |
| Electrical Resistivity | 0.16 µΩ·m | 20°C |
| Magnetic Permeability | Ferromagnetic | 20°C |
| Curie Temperature | 770°C | - |
| Thermal Diffusivity | 13.8×10-6 m²/s | 20°C |
| Emissivity | 0.85 | 1000°C |
📏 Product Specifications
| Specification | Available Options | Standards |
|---|---|---|
| Product Forms | Plates, Sheets, Bars, Beams, Channels, Angles, Tubes | EN 10025-2 |
| Plate Thickness | 3-400 mm | EN 10029 |
| Sheet Thickness | 0.5-3 mm | EN 10131 |
| Bar Diameter | 6-300 mm | EN 10060 |
| Width Range | 100-4000 mm | EN 10025-2 |
| Length Range | 1000-18000 mm | EN 10025-2 |
| Surface Finish | Hot Rolled, Cold Rolled, Pickled, Shot Blasted | EN 10163 |
| Dimensional Tolerance | Class A, B, C per EN 10029 | EN 10029 |
| Edge Condition | Mill Edge, Slit Edge, Sheared Edge | EN 10025-2 |
| Delivery Condition | Hot Rolled (+AR), Normalized (+N) | EN 10025-2 |
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Our Advantages in Processing EN S235
Advanced Electric Arc Furnace Technology
MetalZenith employs cutting-edge electric arc furnace technology with precise temperature control and automated charging systems, ensuring optimal chemical composition and superior steel quality. Our advanced ladle metallurgy station provides fine-tuning of chemistry and temperature for consistent EN S235 production.
Comprehensive Quality Control System
Our integrated quality management system features real-time monitoring throughout the production process, from raw material inspection to final product testing. MetalZenith's accredited laboratory performs spectroscopic analysis, mechanical testing, and ultrasonic inspection to guarantee EN S235 compliance.
Flexible Customization and Global Supply
MetalZenith offers extensive customization options including specific dimensions, surface finishes, and packaging requirements. Our global distribution network and strategic inventory locations ensure reliable supply chain management with competitive lead times for EN S235 steel products worldwide.
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