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Technical Specifications
Product Overview
Metallurgical Characteristics
EN 40NiCrMo22 is a premium alloy steel featuring a complex microstructure of tempered martensite when properly heat treated. The nickel content enhances toughness and hardenability, while chromium provides wear resistance and corrosion protection. Molybdenum addition significantly improves high-temperature strength and prevents temper brittleness.
Heat Treatment Process
MetalZenith employs controlled atmosphere furnaces for optimal heat treatment. Austenitizing temperature ranges from 820-860°C, followed by oil quenching to achieve uniform hardness. Tempering at 550-650°C develops the desired balance of strength and toughness. Our computer-controlled heat treatment ensures consistent mechanical properties throughout the cross-section.
Manufacturing Process Excellence
Production begins with electric arc furnace melting using premium scrap and alloy additions. Secondary refining through ladle metallurgy and vacuum degassing removes harmful inclusions and gases. Continuous casting produces high-quality billets, which undergo controlled rolling or forging to achieve optimal grain structure and mechanical properties.
Quality Standards & Certifications
MetalZenith maintains compliance with EN 10083-3, ASTM A322, and JIS SCM440 standards. Our quality management system includes statistical process control, automated testing equipment, and full material traceability. Third-party certification available from Lloyd's Register, TUV, and other recognized bodies. Complete mill test certificates provided with chemical analysis, mechanical properties, and heat treatment records.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.37 - 0.44 |
| Silicon (Si) | ≤ 0.40 |
| Manganese (Mn) | 0.50 - 0.80 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
| Chromium (Cr) | 0.60 - 1.00 |
| Nickel (Ni) | 1.30 - 1.70 |
| Molybdenum (Mo) | 0.15 - 0.30 |
| Aluminum (Al) | ≥ 0.020 |
| Copper (Cu) | ≤ 0.30 |
⚙️ Mechanical Properties
| Property | Value | Condition |
|---|---|---|
| Tensile Strength | 900 - 1100 MPa | Quenched & Tempered |
| Yield Strength (0.2%) | ≥ 700 MPa | Quenched & Tempered |
| Elongation | ≥ 12% | A5 |
| Reduction of Area | ≥ 45% | Z |
| Hardness | 280 - 320 HB | Quenched & Tempered |
| Impact Energy | ≥ 40 J | Charpy V-notch at 20°C |
| Fatigue Limit | 450 - 500 MPa | 10&sup7; cycles |
| Young's Modulus | 210 GPa | Typical |
🔬 Physical Properties
| Property | Value | Temperature |
|---|---|---|
| Density | 7.85 g/cm³ | 20°C |
| Melting Point | 1420 - 1460°C | - |
| Thermal Conductivity | 44 W/m·K | 20°C |
| Thermal Expansion Coefficient | 12.3×10-6/K | 20-100°C |
| Specific Heat Capacity | 460 J/kg·K | 20°C |
| Electrical Resistivity | 0.25 µΩ·m | 20°C |
| Magnetic Permeability | Ferromagnetic | 20°C |
| Poisson's Ratio | 0.27 - 0.30 | Typical |
📏 Product Specifications
| Specification | Available Options | Standards |
|---|---|---|
| Product Forms | Round bars, square bars, flat bars, plates, sheets, forgings | EN 10083-3 |
| Round Bar Diameter | 10 - 500 mm | EN 10060 |
| Plate Thickness | 6 - 200 mm | EN 10029 |
| Length | Up to 12 meters (custom lengths available) | Customer specification |
| Surface Finish | Hot rolled, cold drawn, peeled, ground, machined | EN 10221 |
| Dimensional Tolerance | h9, h10, h11 (bars), Class A, B, C (plates) | EN 10060/10029 |
| Heat Treatment Condition | Annealed, normalized, quenched & tempered | EN 10083-3 |
| Testing Standards | EN 10002, EN 10045, EN ISO 6507 | International standards |
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Our Advantages in Processing EN 40NiCrMo22
Advanced Vacuum Degassing Technology
MetalZenith utilizes state-of-the-art vacuum degassing and ladle refining processes to achieve ultra-low inclusion content and superior cleanliness in EN 40NiCrMo22 production, resulting in enhanced fatigue life and mechanical properties.
Comprehensive Quality Control System
Our integrated quality management system includes real-time chemical composition monitoring, advanced heat treatment control, and 100% mechanical property verification, ensuring consistent performance and compliance with international standards.
Custom Processing & Global Supply
MetalZenith offers complete customization including precision machining, heat treatment services, and multiple surface finishes. Our global distribution network ensures reliable delivery worldwide with full traceability documentation.
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