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Technical Specifications
Product Overview
Metallurgical Characteristics
M19 structural steel features a fine-grained ferritic-pearlitic microstructure optimized for structural applications. The controlled addition of chromium, nickel, and molybdenum enhances strength and toughness while maintaining excellent weldability. The balanced chemical composition provides superior atmospheric corrosion resistance compared to conventional structural steels.
Heat Treatment Process
MetalZenith employs controlled rolling at temperatures between 850-950°C followed by accelerated cooling to achieve optimal mechanical properties. Our thermomechanical controlled processing (TMCP) ensures fine grain structure and enhanced impact toughness. Normalization at 900-920°C may be applied for specific applications requiring stress relief.
Manufacturing Excellence
Our advanced manufacturing process includes continuous casting, controlled rolling with precise temperature monitoring, and optimized cooling strategies. MetalZenith's quality control systems ensure consistent chemical composition and mechanical properties throughout each production batch, meeting the stringent requirements of structural applications.
Specialized Quality Testing
M19 steel undergoes comprehensive testing protocols including weldability assessment using standard procedures, forming performance evaluation through bend tests, fatigue strength testing under cyclic loading conditions, and atmospheric corrosion resistance testing in simulated environmental conditions. These specialized tests ensure optimal performance in structural applications.
Application Engineering Considerations
For building construction, M19 provides excellent strength-to-weight ratio and seismic resistance. In bridge engineering, its superior fatigue resistance and weldability enable complex joint designs. For machinery manufacturing, the steel's formability allows for efficient fabrication of complex components. In vehicle manufacturing, M19 offers crashworthiness and weight optimization. General engineering applications benefit from its versatility and reliable performance across diverse operating conditions.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.15 - 0.22 |
| Manganese (Mn) | 1.20 - 1.60 |
| Silicon (Si) | 0.20 - 0.55 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 0.30 - 0.60 |
| Nickel (Ni) | 0.25 - 0.50 |
| Molybdenum (Mo) | 0.15 - 0.30 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 355 |
| Tensile Strength (MPa) | 490 - 630 |
| Elongation (%) | ≥ 22 |
| Impact Energy at 0°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) | 48.2 |
| Thermal Expansion (×10??/K) | 11.8 |
| Elastic Modulus (GPa) | 210 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Beams, Channels, Angles, Bars, Tubes |
| Thickness Range | 8 - 150mm |
| Width Range | 1200 - 3500mm |
| Length Range | 6000 - 15000mm |
| Standards Compliance | ASTM A572, EN 10025, JIS G3106 |
| Heat Treatment Condition | Hot Rolled, Normalized, or TMCP |
| Surface Finish | Mill Scale, Shot Blasted, or Pickled |
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Our Advantages in Processing M19 Steel
Advanced Thermomechanical Processing
MetalZenith utilizes controlled rolling technology with precise temperature control and optimized cooling rates to achieve superior grain refinement in M19 steel. Our advanced processing ensures consistent mechanical properties throughout the material thickness and enhanced structural performance for demanding applications.
Comprehensive Structural Testing
Our M19 steel undergoes extensive testing protocols including weldability assessment, forming performance evaluation, fatigue strength testing, and atmospheric corrosion resistance analysis. This comprehensive testing ensures optimal performance in structural applications requiring long-term reliability and durability.
Custom Structural Solutions
MetalZenith provides tailored processing services for M19 steel including precision cutting, forming, and heat treatment to meet specific structural requirements. Our technical support team works closely with engineers to optimize material specifications for building, bridge, and machinery applications.
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