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Technical Specifications
Product Overview
Metallurgical Characteristics
EN 1.3343 is a tungsten-molybdenum high speed steel with a complex carbide structure that provides exceptional wear resistance and hot hardness. The steel contains primary MC carbides (rich in vanadium) and secondary M6C and M23C6 carbides (rich in tungsten, molybdenum, and chromium). This carbide distribution ensures superior cutting edge retention and thermal stability at elevated temperatures up to 600°C.
Heat Treatment Process
MetalZenith's optimized heat treatment process begins with preheating to 850°C, followed by austenitizing at 1210-1230°C in protective atmosphere or vacuum. Quenching is performed in oil, air, or salt bath depending on section size. Triple tempering at 540-580°C achieves optimal hardness of 62-65 HRC while maintaining toughness. Our controlled atmosphere furnaces ensure consistent results and prevent decarburization.
Manufacturing Excellence
MetalZenith employs advanced vacuum induction melting (VIM) followed by electroslag remelting (ESR) to achieve exceptional cleanliness and homogeneity. Our powder metallurgy route offers even finer carbide distribution for premium applications. Hot working is performed between 1150-950°C with careful temperature control to optimize microstructure. Cold working capabilities include precision grinding, turning, and electrical discharge machining.
Quality Standards and Testing
All EN 1.3343 products undergo comprehensive testing including chemical analysis by optical emission spectroscopy, mechanical property verification, ultrasonic inspection for internal soundness, and microstructural examination. MetalZenith maintains ISO 9001:2015 certification and complies with international standards including ASTM A600, EN 10027, and JIS G4403. Complete traceability documentation and material certificates are provided with every shipment.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.78 - 0.88 |
| Silicon (Si) | 0.20 - 0.45 |
| Manganese (Mn) | 0.15 - 0.40 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 3.80 - 4.50 |
| Molybdenum (Mo) | 4.50 - 5.50 |
| Tungsten (W) | 5.50 - 6.75 |
| Vanadium (V) | 1.75 - 2.20 |
| Cobalt (Co) | ≤ 0.50 |
| Nickel (Ni) | ≤ 0.30 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Annealed) | 850 - 1000 MPa |
| Yield Strength (Annealed) | 550 - 650 MPa |
| Elongation (Annealed) | 10 - 15% |
| Reduction of Area (Annealed) | 25 - 35% |
| Hardness (Annealed) | 255 - 285 HB |
| Hardness (Hardened & Tempered) | 62 - 65 HRC |
| Impact Energy (Charpy V-notch) | 15 - 25 J |
| Fatigue Limit (10&sup7; cycles) | 450 - 550 MPa |
| Compressive Strength | 2800 - 3200 MPa |
| Hot Hardness (600°C) | 45 - 50 HRC |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 8.15 g/cm³ |
| Melting Point | 1480 - 1520°C |
| Thermal Conductivity (20°C) | 22 - 25 W/m·K |
| Thermal Expansion Coefficient (20-100°C) | 10.5×10-6/K |
| Thermal Expansion Coefficient (20-200°C) | 11.2×10-6/K |
| Thermal Expansion Coefficient (20-400°C) | 12.1×10-6/K |
| Specific Heat Capacity | 460 J/kg·K |
| Electrical Resistivity (20°C) | 0.65 - 0.75 µΩ·m |
| Modulus of Elasticity | 230 - 240 GPa |
| Poisson's Ratio | 0.27 - 0.30 |
| Magnetic Permeability | Paramagnetic |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Round bars, flat bars, square bars, plates, sheets, forged blocks |
| Round Bar Diameter | 6mm - 500mm |
| Flat Bar Dimensions | 10×20mm - 100×300mm |
| Plate Thickness | 10mm - 200mm |
| Sheet Thickness | 2mm - 10mm |
| Standard Lengths | 1000mm, 2000mm, 3000mm, 6000mm (custom lengths available) |
| Surface Finish | Hot rolled, cold drawn, peeled, ground, polished |
| Condition | Annealed, hardened & tempered, soft annealed |
| Tolerance (Diameter) | h9, h11, +0/-0.5mm (custom tolerances available) |
| Standards Compliance | EN 10027, ASTM A600, JIS SKH51, DIN 1.3343 |
| Certifications | Mill test certificate, material certificate, heat treatment certificate |
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Our Advantages in Processing EN 1.3343
Advanced Vacuum Melting Technology
MetalZenith employs cutting-edge vacuum induction melting (VIM) and electroslag remelting (ESR) processes to produce EN 1.3343 with exceptional cleanliness, minimal inclusions, and superior carbide distribution for enhanced tool performance and extended service life.
Comprehensive Quality Control Systems
Our state-of-the-art testing laboratory features advanced spectroscopy, ultrasonic inspection, and mechanical testing equipment. Every batch of EN 1.3343 undergoes rigorous quality verification including chemical analysis, hardness testing, and microstructure examination to ensure consistent performance.
Global Supply Chain Excellence
MetalZenith's worldwide distribution network and flexible manufacturing capabilities enable rapid delivery of EN 1.3343 in standard and custom specifications. Our technical support team provides expert guidance on heat treatment, machining parameters, and application optimization.
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