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Technical Specifications
Product Overview
Metallurgical Characteristics
HSLA 450 features a fine-grained ferrite-pearlite microstructure with controlled precipitation of microalloying elements including niobium, vanadium, and titanium. The thermomechanical processing creates a refined grain structure with precipitate strengthening, delivering superior strength-to-weight ratio compared to conventional carbon steels. The optimized chemistry provides excellent weldability with low carbon equivalent (CE ≤ 0.45) and good formability for complex geometries.
Heat Treatment & Processing
MetalZenith's HSLA 450 is produced through controlled rolling at temperatures between 850-950°C followed by accelerated cooling to achieve optimal microstructural development. The steel is typically supplied in the as-rolled condition with normalized properties. Stress relief annealing at 580-620°C may be applied for improved dimensional stability. The material exhibits excellent machinability and can be readily formed using conventional techniques including bending, punching, and deep drawing.
Manufacturing Process Excellence
Our integrated steel production facility utilizes electric arc furnace technology with secondary refining through ladle metallurgy and vacuum degassing. Continuous casting ensures homogeneous chemical composition and minimal segregation. The hot rolling process incorporates computer-controlled cooling systems to achieve precise mechanical properties. Advanced process control systems monitor temperature, reduction ratios, and cooling rates to ensure consistent quality throughout production.
Quality Standards & Testing
MetalZenith's HSLA 450 production adheres to international quality standards including ISO 9001:2015, ASTM A572, and EN 10025-4. Comprehensive testing protocols include chemical analysis via optical emission spectrometry, mechanical testing per ASTM E8/E8M, Charpy impact testing per ASTM E23, and ultrasonic examination per ASTM A578. Statistical process control ensures 99.7% conformance to specifications with full material traceability and certification documentation provided with each shipment.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.18 |
| Manganese (Mn) | 0.80 - 1.60 |
| Silicon (Si) | 0.15 - 0.50 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.015 |
| Chromium (Cr) | 0.30 - 0.80 |
| Nickel (Ni) | 0.30 - 0.80 |
| Molybdenum (Mo) | 0.15 - 0.30 |
| Copper (Cu) | 0.20 - 0.50 |
| Aluminum (Al) | 0.020 - 0.060 |
| Niobium (Nb) | 0.015 - 0.060 |
| Vanadium (V) | 0.02 - 0.10 |
| Titanium (Ti) | 0.006 - 0.025 |
| Nitrogen (N) | ≤ 0.015 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (Rp0.2) | ≥ 450 MPa |
| Tensile Strength (Rm) | 520 - 670 MPa |
| Elongation (A80) | ≥ 19% |
| Elongation (A5) | ≥ 17% |
| Brinell Hardness (HB) | 150 - 200 |
| Vickers Hardness (HV) | 160 - 220 |
| Impact Energy (KV) at 20°C | ≥ 40 J |
| Impact Energy (KV) at -20°C | ≥ 27 J |
| Impact Energy (KV) at -40°C | ≥ 20 J |
| Young's Modulus | 210 GPa |
| Shear Modulus | 80 GPa |
| Poisson's Ratio | 0.30 |
| Fatigue Limit (10^7 cycles) | 225 MPa |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | 1510°C |
| Thermal Conductivity (20°C) | 52 W/m·K |
| Thermal Conductivity (100°C) | 48 W/m·K |
| Thermal Expansion (20-100°C) | 12.5×10-6/K |
| Thermal Expansion (20-200°C) | 13.0×10-6/K |
| Specific Heat Capacity | 460 J/kg·K |
| Electrical Resistivity (20°C) | 0.18 µΩ·m |
| Magnetic Permeability | Ferromagnetic |
| Curie Temperature | 770°C |
| Thermal Diffusivity (20°C) | 14.4 mm²/s |
| Emissivity (oxidized surface) | 0.79 |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Hot Rolled Plates, Cold Rolled Sheets, Coils, Strips, Bars, Structural Sections |
| Plate Thickness | 3 - 100 mm |
| Sheet Thickness | 0.5 - 6.0 mm |
| Width Range | 600 - 2500 mm |
| Length Range | 2000 - 12000 mm |
| Coil Weight | Up to 35 tons |
| Standards Compliance | ASTM A572, EN 10025-4, JIS G3106, GB/T 1591 |
| Surface Finish | Hot Rolled, Pickled, Cold Rolled, Galvanized, Painted |
| Edge Condition | Mill Edge, Slit Edge, Trimmed Edge |
| Flatness Tolerance | ≤ 5 mm/m |
| Thickness Tolerance | ±0.05 - ±0.3 mm (depending on thickness) |
| Width Tolerance | ±3 - ±10 mm (depending on width) |
| Length Tolerance | +10/-0 mm |
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Our Advantages in Processing HSLA 450
Advanced Thermomechanical Processing
MetalZenith employs cutting-edge controlled rolling and accelerated cooling technologies to achieve precise microstructural control in HSLA 450. Our advanced processing parameters ensure uniform grain refinement and optimal precipitation hardening, delivering consistent mechanical properties and superior toughness across all product dimensions.
Comprehensive Quality Control System
Our integrated quality management system features real-time chemical composition monitoring, automated mechanical testing, and advanced metallurgical analysis. MetalZenith's laboratory is equipped with state-of-the-art spectrometers, universal testing machines, and electron microscopy facilities to guarantee HSLA 450 meets the most stringent specifications.
Custom Engineering & Global Supply
MetalZenith offers tailored HSLA 450 solutions with custom chemical compositions, mechanical properties, and product forms to meet specific application requirements. Our global distribution network and strategic inventory management ensure reliable supply chain support with just-in-time delivery capabilities worldwide.
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