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Technical Specifications
Product Overview
Metallurgical Characteristics
CREUSABRO 4800 features a martensitic microstructure achieved through controlled quenching and tempering processes. The optimized chemical composition with chromium, molybdenum, and boron additions provides exceptional hardenability and wear resistance. The fine-grained structure ensures uniform hardness distribution and superior toughness properties.
Heat Treatment Process
MetalZenith employs a precision-controlled heat treatment cycle consisting of austenitization at 900-950°C, followed by water quenching to achieve martensitic transformation. Subsequent tempering at 180-220°C optimizes the hardness-toughness balance while maintaining dimensional stability. Computer-monitored furnaces ensure consistent thermal profiles throughout the entire plate thickness.
Manufacturing Process
Production begins with electric arc furnace melting using premium scrap and alloy additions. Secondary refining through ladle furnace and vacuum degassing ensures low inclusion content and optimal cleanliness. Continuous casting produces high-quality slabs, which undergo controlled rolling to achieve desired thickness and mechanical properties. Final heat treatment in walking beam furnaces ensures uniform hardness and microstructure.
Quality Standards & Testing
MetalZenith maintains comprehensive quality control throughout production, including chemical analysis by optical emission spectroscopy, hardness testing using calibrated Brinell equipment, and ultrasonic inspection for internal soundness. Impact testing at various temperatures ensures adequate toughness for demanding applications. All products comply with ISO 9001:2015 quality management standards and customer-specific requirements.
Welding Considerations
CREUSABRO 4800 requires careful welding procedures due to its high carbon equivalent. Preheating to 150-200°C and post-weld stress relief are recommended for thick sections. Low hydrogen electrodes and controlled cooling rates prevent cracking. MetalZenith provides detailed welding procedures and technical support for optimal joint performance.
🧪 Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.18-0.25 |
| Manganese (Mn) | 1.20-1.60 |
| Silicon (Si) | 0.15-0.50 |
| Phosphorus (P) | ≤ 0.020 |
| Sulfur (S) | ≤ 0.010 |
| Chromium (Cr) | 1.20-1.80 |
| Nickel (Ni) | 0.50-1.00 |
| Molybdenum (Mo) | 0.20-0.60 |
| Boron (B) | 0.0015-0.0050 |
| Aluminum (Al) | 0.015-0.050 |
| Titanium (Ti) | ≤ 0.030 |
| Vanadium (V) | ≤ 0.080 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Hardness (HBW) | 470-530 |
| Tensile Strength (Rm) | ≥ 1400 MPa |
| Yield Strength (Rp0.2) | ≥ 1100 MPa |
| Elongation (A5) | ≥ 8% |
| Impact Energy (KV) at 20°C | ≥ 25 J |
| Impact Energy (KV) at -20°C | ≥ 20 J |
| Young's Modulus (E) | 210 GPa |
| Poisson's Ratio | 0.30 |
| Fatigue Limit (107 cycles) | 420 MPa |
| Fracture Toughness (KIC) | 45 MPa·m1/2 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | 1480-1520°C |
| Thermal Conductivity (20°C) | 42 W/m·K |
| Thermal Expansion Coefficient (20-100°C) | 12.5×10-6/K |
| Specific Heat Capacity | 460 J/kg·K |
| Electrical Resistivity (20°C) | 0.18 µΩ·m |
| Magnetic Permeability | Ferromagnetic |
| Curie Temperature | 750°C |
| Thermal Diffusivity | 11.6×10-6 m²/s |
| Maximum Service Temperature | 400°C |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Cut-to-size pieces |
| Thickness Range | 6-80 mm |
| Width Range | 1000-3000 mm |
| Length Range | 2000-12000 mm |
| Surface Finish | Hot rolled, Shot blasted, Pickled |
| Edge Condition | Mill edge, Flame cut, Plasma cut, Machined |
| Dimensional Tolerance | Thickness: ±0.5mm, Width: ±5mm |
| Flatness | ≤ 5mm/m |
| Standards Compliance | EN 10204-3.1, ASTM A514, JIS G3106 |
| Delivery Condition | Quenched and Tempered (Q+T) |
| Packaging | Wooden skids, Steel strapping, Protective coating |
| Marking | Heat number, Grade, Dimensions, MetalZenith logo |
Let Us Create Success for Your Project
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Our Advantages in Processing CREUSABRO 4800
Advanced Heat Treatment Technology
MetalZenith employs precision-controlled quenching and tempering processes with computer-monitored temperature profiles to achieve consistent hardness levels of 470-530 HBW throughout the entire plate thickness, ensuring optimal wear resistance and dimensional stability.
Comprehensive Quality Control System
Our integrated quality management system includes real-time hardness monitoring, ultrasonic testing for internal soundness, and dimensional verification using advanced measuring equipment. Every plate undergoes rigorous inspection with full traceability documentation and mill test certificates.
Global Supply Chain Excellence
MetalZenith offers flexible customization options including precision cutting, machining, and surface treatments. Our worldwide distribution network ensures reliable delivery schedules, while our technical support team provides application engineering assistance and material selection guidance.
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