20 Years Experience | 1000+ Brand Partners | Full Customization
We have 20 years of industry experience, have partnered with over 1,000 brands, and support any customization needs.
Technical Specifications
Product Overview
Metallurgical Characteristics
St 50 is a normalized carbon-manganese structural steel with a fine-grained ferritic-pearlitic microstructure. The controlled carbon content and manganese addition provide excellent strength while maintaining good weldability and formability. The fine grain structure achieved through controlled rolling enhances both strength and toughness properties.
Heat Treatment Process
MetalZenith employs controlled rolling at temperatures between 850-950°C followed by normalization at 880-920°C with controlled air cooling. This process ensures optimal grain refinement, uniform mechanical properties, and excellent dimensional stability for structural applications.
Manufacturing Process
Our St 50 steel is produced using electric arc furnace melting with secondary refining processes including ladle furnace treatment and vacuum degassing. The controlled rolling process with precise temperature control ensures consistent mechanical properties and excellent surface quality throughout the material cross-section.
Structural Quality Testing
MetalZenith conducts comprehensive testing including welding performance evaluation using standard procedures, forming capability assessment through bend tests, fatigue strength testing under cyclic loading, and atmospheric corrosion resistance testing. These specialized tests ensure optimal performance in structural applications.
Application Engineering Considerations
For building construction, St 50 provides excellent strength-to-weight ratio and weldability for framework applications. In bridge engineering, the material offers superior fatigue resistance and weather durability. For machinery manufacturing, the steel provides excellent machinability and forming characteristics. In vehicle construction, St 50 delivers optimal crash performance and structural integrity. For general engineering applications, the material offers versatile processing capabilities and reliable performance.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.17 - 0.23 |
| Manganese (Mn) | 1.20 - 1.60 |
| Silicon (Si) | 0.15 - 0.40 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Aluminum (Al) | ≥ 0.020 |
| Chromium (Cr) | ≤ 0.30 |
| Nickel (Ni) | ≤ 0.30 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 355 |
| Tensile Strength (MPa) | 490 - 630 |
| Elongation (%) | ≥ 22 |
| Impact Energy at 20°C (J) | ≥ 27 |
| Hardness (HB) | 140 - 190 |
| Fatigue Strength (MPa) | 180 - 220 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1510 - 1540 |
| Thermal Conductivity (W/m·K) | 50.2 |
| Thermal Expansion (×10??/K) | 11.8 |
| Elastic Modulus (GPa) | 210 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Beams, Channels, Angles, Bars |
| Thickness Range | 3 - 80mm |
| Width Range | 1000 - 3000mm |
| Length Range | 6000 - 12000mm |
| Standards Compliance | DIN 17100, EN 10025, ASTM A572 |
| Heat Treatment Condition | Normalized or Hot Rolled |
| Surface Finish | Hot Rolled, Pickled, Shot Blasted |
Let Us Create Success for Your Project
Professional Team, Premium Products, Complete Service - Your Project Success is Our Mission
Our Advantages in Processing St 50 Steel
Controlled Rolling and Normalization Process
MetalZenith utilizes advanced controlled rolling technology followed by precise normalization heat treatment to achieve optimal grain refinement and mechanical properties. Our process ensures uniform microstructure and enhanced strength-toughness balance throughout the material thickness.
Comprehensive Structural Testing Program
Our St 50 steel undergoes extensive testing including welding performance evaluation, forming capability assessment, fatigue strength testing, and atmospheric corrosion resistance analysis. This ensures optimal performance in demanding structural applications.
Custom Fabrication and Technical Support
MetalZenith provides comprehensive custom processing services including cutting, forming, and heat treatment tailored to specific structural requirements. Our technical team offers expert consultation for optimal material selection and application engineering.
YOUR TRUSTED STEEL
MANUFACTURING PARTNER
Quick Inquiry
Industries We Serve
Professional steel solutions across major industries
Qualifications & Certifications
