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Technical Specifications
Product Overview
Metallurgical Characteristics
AISI A2 is a high-carbon, high-chromium air-hardening tool steel with excellent dimensional stability during heat treatment. The steel's microstructure consists of a martensitic matrix with uniformly distributed chromium and molybdenum carbides, providing superior wear resistance and toughness. The addition of vanadium refines the grain structure and enhances secondary hardening response.
Heat Treatment Process
MetalZenith's controlled heat treatment process involves preheating to 650-700°C, followed by austenitizing at 925-980°C in protective atmosphere. Air cooling provides adequate hardening due to the steel's high hardenability. Tempering is performed at 150-540°C depending on desired hardness levels, with double tempering recommended for optimal dimensional stability.
Manufacturing Excellence
Our AISI A2 production utilizes electric arc furnace melting followed by ladle refining and vacuum degassing to achieve exceptional cleanliness. Continuous casting or ingot casting is employed based on product requirements, followed by controlled hot rolling or forging. All processes are monitored using advanced process control systems to ensure consistent quality.
Quality Standards & Testing
MetalZenith implements comprehensive quality control including chemical analysis by optical emission spectroscopy, mechanical testing per ASTM standards, ultrasonic testing for internal soundness, and dimensional verification. Each batch is accompanied by material test certificates and full traceability documentation meeting international aerospace and automotive industry requirements.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.95 - 1.05 |
| Manganese (Mn) | 0.60 - 1.00 |
| Silicon (Si) | 0.50 max |
| Phosphorus (P) | 0.030 max |
| Sulfur (S) | 0.030 max |
| Chromium (Cr) | 4.75 - 5.50 |
| Molybdenum (Mo) | 0.90 - 1.40 |
| Vanadium (V) | 0.15 - 0.50 |
| Nickel (Ni) | 0.30 max |
| Copper (Cu) | 0.25 max |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Annealed) | 758 MPa (110 ksi) |
| Yield Strength (Annealed) | 414 MPa (60 ksi) |
| Elongation (Annealed) | 22% |
| Reduction of Area (Annealed) | 45% |
| Hardness (Annealed) | 217 HB max |
| Hardness (Hardened & Tempered) | 57-62 HRC |
| Impact Strength (Charpy V-notch) | 20-35 J (15-26 ft-lbs) |
| Fatigue Limit | 550 MPa (80 ksi) |
| Modulus of Elasticity | 210 GPa (30.5 × 10³ ksi) |
| Poisson's Ratio | 0.27-0.30 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 7.86 g/cm³ (0.284 lb/in³) |
| Melting Point | 1480-1520°C (2696-2768°F) |
| Thermal Conductivity (20°C) | 24.3 W/m·K (14.0 BTU/hr·ft·°F) |
| Thermal Expansion Coefficient (20-100°C) | 11.9×10-6/K (6.6×10-6/°F) |
| Specific Heat Capacity | 460 J/kg·K (0.11 BTU/lb·°F) |
| Electrical Resistivity (20°C) | 0.48 µΩ·m |
| Magnetic Permeability | Ferromagnetic |
| Curie Temperature | 760°C (1400°F) |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Round bars, flat bars, plates, sheets, blocks, forgings |
| Round Bar Diameter | 6mm - 500mm (0.25' - 20') |
| Flat Bar Dimensions | Thickness: 3-100mm, Width: 10-300mm |
| Plate Thickness | 6mm - 200mm (0.25' - 8') |
| Length | Up to 6000mm (20 ft) or custom |
| Standards | ASTM A681, DIN 1.2363, JIS SKD12, GB Cr12MoV |
| Surface Finish | Hot rolled, cold drawn, turned, ground, polished |
| Condition | Annealed, normalized, hardened & tempered |
| Dimensional Tolerance | ±0.1mm to ±0.5mm depending on size and form |
| Straightness | ≤ 1mm/m for bars, ≤ 2mm/m for plates |
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Our Advantages in Processing AISI A2
Advanced Vacuum Melting Technology
MetalZenith employs vacuum induction melting (VIM) and electroslag remelting (ESR) processes to achieve superior steel cleanliness, reduced inclusion content, and enhanced mechanical properties in our AISI A2 production.
Precision Heat Treatment Control
Our computer-controlled heat treatment facilities with atmosphere protection ensure precise austenitizing temperatures and controlled cooling rates, delivering consistent hardness and optimal microstructural characteristics.
Comprehensive Customization Services
MetalZenith offers extensive customization including precision machining, heat treatment to customer specifications, and specialized surface treatments, supported by our global supply chain and technical engineering team.
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