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Technical Specifications
Product Overview
Metallurgical Characteristics
S235JR exhibits a ferritic-pearlitic microstructure typical of low-carbon structural steels. The controlled carbon content ensures excellent weldability while maintaining adequate strength for structural applications. The fine grain structure achieved through controlled rolling provides optimal balance between strength and ductility, essential for construction applications.
Heat Treatment Process
MetalZenith employs controlled hot rolling at temperatures between 1050-1200°C followed by controlled cooling to achieve optimal mechanical properties. Normalizing treatment at 850-950°C may be applied for enhanced uniformity and stress relief, particularly for thick sections used in critical structural applications.
Manufacturing Process
Our advanced manufacturing process includes continuous casting, controlled hot rolling with precise temperature monitoring, and quality inspection at every stage. MetalZenith's state-of-the-art rolling mills ensure consistent dimensional accuracy and surface quality essential for structural fabrication.
Structural Quality Testing
Comprehensive testing protocols include weldability assessment per AWS D1.1 standards, bend testing for formability evaluation, fatigue testing under cyclic loading conditions, and atmospheric corrosion resistance testing. Impact testing ensures adequate toughness for structural applications in various temperature conditions.
Application Engineering
For building structures, S235JR provides excellent load-bearing capacity with superior weldability for complex connections. In bridge engineering, its fatigue resistance and atmospheric corrosion properties ensure long-term durability. For mechanical manufacturing, the steel's formability enables complex shapes while maintaining structural integrity. Vehicle manufacturing benefits from its lightweight strength ratio and crash energy absorption characteristics.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.17 |
| Manganese (Mn) | ≤ 1.40 |
| Silicon (Si) | ≤ 0.40 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.040 |
| Nitrogen (N) | ≤ 0.012 |
| Copper (Cu) | ≤ 0.55 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 235 |
| Tensile Strength (MPa) | 360 - 510 |
| Elongation (%) | ≥ 26 |
| Impact Energy at 20°C (J) | ≥ 27 |
| Hardness (HB) | 120 - 155 |
| Fatigue Strength (MPa) | 180 - 220 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1450 - 1520 |
| Thermal Conductivity (W/m·K) | 54.0 |
| Thermal Expansion (×10??/K) | 12.0 |
| Elastic Modulus (GPa) | 210 |
| Poisson's Ratio | 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Beams, Channels, Angles, Bars |
| Thickness Range | 3 - 100mm |
| Width Range | 1000 - 3000mm |
| Length Range | 6000 - 12000mm |
| Standards Compliance | EN 10025-2, ASTM A36, JIS G3101 |
| Delivery Condition | Hot Rolled, Normalized |
| Surface Finish | Mill Scale, Shot Blasted, Pickled |
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Our Advantages in Processing S235JR
Controlled Hot Rolling Technology
MetalZenith utilizes advanced controlled hot rolling processes with real-time temperature monitoring and precise cooling rates to achieve optimal grain structure in S235JR steel. Our sophisticated rolling technology ensures consistent mechanical properties and excellent surface finish throughout the material thickness.
Comprehensive Structural Testing
Our quality assurance program includes specialized testing for structural applications: weldability testing per AWS standards, bend testing for formability assessment, fatigue strength evaluation, and atmospheric corrosion resistance testing. This ensures reliable performance in demanding structural environments.
Custom Fabrication Services
MetalZenith offers comprehensive custom processing services including precision cutting, forming, welding preparation, and surface treatment. Our technical support team provides expert guidance on structural design considerations and fabrication best practices for optimal project outcomes.
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