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Technical Specifications
Product Overview
Metallurgical Characteristics
AISI M50 is a secondary hardening tool steel with a complex carbide structure that provides exceptional wear resistance and thermal stability. The steel contains primary carbides of vanadium (VC) and molybdenum (Mo2C), along with chromium carbides (M7C3 and M23C6) that contribute to its superior high-temperature performance. The fine, uniform distribution of these carbides is achieved through MetalZenith's controlled VIM/VAR melting process.
Heat Treatment Process
MetalZenith employs precise heat treatment protocols for AISI M50, including austenitizing at 1065-1095°C, followed by oil or air quenching to achieve optimal hardness. Tempering is performed at 480-540°C to develop the desired balance of hardness and toughness. Our controlled atmosphere furnaces ensure consistent results and prevent decarburization. Multiple tempering cycles may be applied to achieve specific hardness requirements while maintaining dimensional stability.
Manufacturing Process Excellence
Our manufacturing process begins with carefully selected raw materials that undergo vacuum induction melting to ensure chemical homogeneity. The molten steel is then vacuum arc remelted to eliminate inclusions and improve cleanliness. Subsequent hot forging operations are performed within controlled temperature ranges to optimize grain structure. All processing steps are monitored using advanced process control systems to maintain consistent quality.
Quality Standards & Testing
MetalZenith's AISI M50 production adheres to stringent aerospace quality standards including AMS 6490/6491 specifications. Comprehensive testing includes chemical analysis via optical emission spectroscopy, mechanical property verification through tensile and hardness testing, ultrasonic inspection for internal soundness, and metallographic examination to verify microstructure. Each heat is accompanied by certified test reports and full traceability documentation meeting AS9100D requirements.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.78 - 0.88 |
| Manganese (Mn) | 0.15 - 0.35 |
| Silicon (Si) | 0.15 - 0.35 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.010 |
| Chromium (Cr) | 3.75 - 4.50 |
| Molybdenum (Mo) | 4.00 - 4.50 |
| Vanadium (V) | 0.90 - 1.30 |
| Nickel (Ni) | ≤ 0.30 |
| Copper (Cu) | ≤ 0.25 |
| Aluminum (Al) | ≤ 0.035 |
| Titanium (Ti) | ≤ 0.035 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Hardened & Tempered) | 2070 - 2415 MPa |
| Yield Strength (0.2% Offset) | 1725 - 2070 MPa |
| Elongation | 8 - 12% |
| Reduction of Area | 25 - 35% |
| Hardness (Hardened & Tempered) | 60 - 65 HRC |
| Impact Energy (Charpy V-notch) | 15 - 25 J |
| Fatigue Strength (10&sup7; cycles) | 900 - 1100 MPa |
| Modulus of Elasticity | 210 GPa |
| Poisson's Ratio | 0.27 - 0.30 |
| Compressive Strength | 2760 - 3100 MPa |
| Shear Strength | 1380 - 1550 MPa |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 8.15 g/cm³ |
| Melting Point | 1425 - 1455°C |
| Thermal Conductivity (20°C) | 24.3 W/m·K |
| Thermal Conductivity (315°C) | 28.5 W/m·K |
| Thermal Expansion Coefficient (20-100°C) | 10.8×10-6/K |
| Thermal Expansion Coefficient (20-315°C) | 12.2×10-6/K |
| Specific Heat Capacity | 460 J/kg·K |
| Electrical Resistivity (20°C) | 0.52 µΩ·m |
| Magnetic Permeability | Ferromagnetic |
| Curie Temperature | 760°C |
| Thermal Diffusivity (20°C) | 6.5×10-6 m²/s |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Round bars, square bars, flat bars, forged rings, plates, sheets |
| Round Bar Diameter | 6mm - 500mm |
| Square Bar Size | 10mm - 300mm |
| Plate Thickness | 5mm - 200mm |
| Sheet Thickness | 0.5mm - 5mm |
| Length | Up to 6000mm (custom lengths available) |
| Standards | ASTM A295, AMS 6490, AMS 6491, SAE J437 |
| Surface Finish | Hot rolled, cold drawn, turned, ground, polished |
| Dimensional Tolerance | ±0.1mm to ±0.5mm (depending on size and form) |
| Heat Treatment Condition | Annealed, hardened & tempered, stress relieved |
| Quality Grades | Standard grade, aerospace grade, bearing grade |
| Packaging | Wooden crates, steel bundles, custom packaging available |
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Our Advantages in Processing AISI M50
Advanced VIM/VAR Processing Technology
MetalZenith employs cutting-edge Vacuum Induction Melting (VIM) followed by Vacuum Arc Remelting (VAR) processes to produce ultra-clean AISI M50 steel with minimal inclusions, superior chemical homogeneity, and enhanced fatigue life performance for critical aerospace applications.
Comprehensive Quality Control Systems
Our state-of-the-art quality control laboratory features advanced testing equipment including optical emission spectrometers, universal testing machines, and metallographic analysis systems, ensuring every batch meets stringent aerospace specifications with full traceability documentation.
Custom Processing & Global Supply Chain
MetalZenith offers complete customization services including precision forging, controlled atmosphere heat treatment, and machining to customer specifications. Our global distribution network ensures reliable delivery of AISI M50 products worldwide with comprehensive technical support.
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