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Technical Specifications
Product Overview
Metallurgical Characteristics
AISI O1 is a water-hardening tool steel with additions of tungsten and chromium that enhance its hardenability and allow for oil quenching. The steel exhibits a fine pearlitic microstructure in the annealed condition, transforming to martensite upon proper heat treatment. The tungsten content provides secondary hardening effects and improves wear resistance, while chromium enhances hardenability and corrosion resistance.
Heat Treatment Process
MetalZenith's optimized heat treatment protocol includes preheating to 650-700°C, followed by austenitizing at 780-800°C. Oil quenching provides optimal cooling rates to achieve maximum hardness of 60-64 HRC. Tempering at 150-200°C maintains high hardness, while higher tempering temperatures (400-500°C) improve toughness for impact applications. Our controlled atmosphere furnaces prevent decarburization and ensure consistent results.
Manufacturing Process Excellence
Our AISI O1 production utilizes electric arc furnace melting followed by ladle refining and vacuum degassing to achieve exceptional cleanliness. Continuous casting and controlled rolling ensure uniform microstructure and mechanical properties. Advanced process control systems monitor temperature, chemistry, and cooling rates throughout production. Post-processing includes precision machining, surface treatment, and comprehensive quality testing.
Quality Standards & Certifications
MetalZenith maintains ISO 9001:2015, ISO 14001:2015, and OHSAS 18001 certifications. Our AISI O1 complies with ASTM A681 specifications and undergoes rigorous testing including chemical analysis by optical emission spectroscopy, mechanical testing per ASTM standards, and microstructural examination. Each shipment includes certified mill test certificates with full traceability documentation and compliance verification.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.85 - 0.95 |
| Manganese (Mn) | 1.00 - 1.40 |
| Silicon (Si) | 0.10 - 0.40 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 0.40 - 0.60 |
| Tungsten (W) | 0.40 - 0.60 |
| Vanadium (V) | 0.10 - 0.30 |
| Nickel (Ni) | ≤ 0.30 |
| Copper (Cu) | ≤ 0.25 |
⚙️ Mechanical Properties
| Property | Value | Condition |
|---|---|---|
| Tensile Strength | 655 - 780 MPa | Annealed |
| Yield Strength | 380 - 450 MPa | Annealed |
| Elongation | 18 - 25% | Annealed |
| Reduction of Area | 35 - 45% | Annealed |
| Hardness (Annealed) | 183 - 229 HB | Annealed |
| Hardness (Hardened) | 60 - 64 HRC | Oil Quenched & Tempered |
| Impact Energy (Charpy V) | 45 - 65 J | Annealed at 20°C |
| Fatigue Limit | 320 - 380 MPa | 107 cycles |
| Elastic Modulus | 210 GPa | Room Temperature |
🔬 Physical Properties
| Property | Value | Temperature |
|---|---|---|
| Density | 7.85 g/cm³ | 20°C |
| Melting Point | 1420 - 1460°C | - |
| Thermal Conductivity | 42 W/m·K | 20°C |
| Thermal Expansion Coefficient | 12.1×10-6/K | 20-100°C |
| Specific Heat Capacity | 460 J/kg·K | 20°C |
| Electrical Resistivity | 0.25 µΩ·m | 20°C |
| Magnetic Permeability | Ferromagnetic | Room Temperature |
| Curie Temperature | 760°C | - |
| Poisson's Ratio | 0.27 - 0.30 | Room Temperature |
📏 Product Specifications
| Specification | Available Options | Standards |
|---|---|---|
| Product Forms | Round bars, flat bars, plates, sheets, forged blocks | ASTM A681 |
| Round Bar Diameter | 6mm - 300mm | ASTM A681 |
| Flat Bar Thickness | 3mm - 100mm | ASTM A681 |
| Plate Thickness | 10mm - 200mm | ASTM A681 |
| Length | Up to 6000mm (custom lengths available) | Customer specification |
| Surface Finish | Hot rolled, cold drawn, ground, polished | ASTM A681 |
| Dimensional Tolerance | ±0.1mm to ±0.5mm (depending on size) | ASTM A681 |
| Heat Treatment Condition | Annealed, normalized, hardened & tempered | Customer specification |
| International Standards | ASTM A681, DIN 1.2510, JIS SKS3 | Multiple standards |
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Our Advantages in Processing AISI O1
Advanced Vacuum Melting Technology
MetalZenith employs state-of-the-art vacuum induction melting (VIM) and electroslag remelting (ESR) processes to produce AISI O1 with exceptional cleanliness and homogeneity. Our controlled atmosphere processing eliminates harmful inclusions and ensures consistent carbide distribution throughout the steel matrix.
Comprehensive Quality Control Systems
Our integrated quality management system features real-time spectroscopic monitoring, automated mechanical testing, and advanced metallographic analysis. Every batch of AISI O1 undergoes rigorous testing including hardenability curves, grain size analysis, and decarburization depth measurement to guarantee consistent performance.
Custom Processing & Global Supply Chain
MetalZenith offers extensive customization capabilities including precision machining, heat treatment services, and specialized surface treatments. Our global distribution network ensures reliable delivery worldwide, while our technical support team provides comprehensive engineering assistance for optimal material selection and application.
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