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Technical Specifications
Product Overview
Metallurgical Characteristics
Maraging Steel features a unique low-carbon, high-nickel martensitic matrix that transforms during solution treatment at 815-845°C. The microstructure consists of lath martensite with fine, coherent precipitates of Ni3Mo, Ni3Ti, and Fe2Mo intermetallic compounds formed during age-hardening. This precipitation strengthening mechanism provides exceptional strength while maintaining good toughness and dimensional stability.
Heat Treatment Process
MetalZenith employs a two-stage heat treatment process: solution annealing at 820°C followed by controlled cooling, then precision age-hardening at 480°C for 3 hours. Our vacuum furnaces with protective atmosphere prevent decarburization and ensure uniform heating throughout the cross-section, critical for achieving consistent ultra-high strength properties.
Manufacturing Process Excellence
Our manufacturing process begins with vacuum induction melting to ensure exceptional cleanliness and homogeneity. Controlled forging and rolling operations maintain optimal grain structure, followed by precision machining capabilities for complex geometries. Advanced quality control includes ultrasonic testing, magnetic particle inspection, and comprehensive mechanical property verification.
Specialized Quality Testing
MetalZenith conducts extensive testing specific to structural applications: TIG and electron beam weldability assessment with post-weld heat treatment optimization, forming limit analysis for complex structural shapes, high-cycle fatigue testing under variable amplitude loading, and atmospheric corrosion resistance evaluation in industrial environments. These tests ensure reliable performance in critical structural applications.
Structural Application Engineering
For building structures, our Maraging Steel provides exceptional strength-to-weight ratios enabling innovative architectural designs. In bridge engineering, the material's fatigue resistance and dimensional stability ensure long-term structural integrity under dynamic loading. For machinery manufacturing, the combination of high strength and machinability allows precision components with tight tolerances. In vehicle manufacturing, the material enables lightweight yet ultra-strong safety structures, while general engineering applications benefit from the material's versatility and reliability in high-stress environments.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.03 |
| Nickel (Ni) | 17.0 - 19.0 |
| Cobalt (Co) | 8.0 - 12.0 |
| Molybdenum (Mo) | 4.6 - 5.2 |
| Titanium (Ti) | 0.6 - 0.8 |
| Aluminum (Al) | 0.05 - 0.15 |
| Silicon (Si) | ≤ 0.10 |
| Iron (Fe) | Balance |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 1720 |
| Tensile Strength (MPa) | 1860 - 2070 |
| Elongation (%) | ≥ 8 |
| Impact Energy at RT (J) | ≥ 20 |
| Hardness (HRC) | 50 - 55 |
| Fatigue Strength (MPa) | ≥ 690 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 8.00 |
| Melting Point (°C) | 1413 - 1440 |
| Thermal Conductivity (W/m·K) | 17.4 |
| Thermal Expansion (×10??/K) | 10.1 |
| Elastic Modulus (GPa) | 186 |
| Poisson's Ratio | 0.31 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Bars, Forgings, Precision Machined Components |
| Thickness Range | 3 - 200mm |
| Width Range | 100 - 2000mm |
| Length Range | 500 - 6000mm |
| Standards Compliance | ASTM A538, AMS 6514, AMS 6521 |
| Heat Treatment Condition | Solution Annealed + Age Hardened |
| Surface Finish | Hot Rolled, Cold Finished, Precision Ground |
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Our Advantages in Processing Maraging Steel
Precision Age-Hardening Technology
MetalZenith utilizes advanced vacuum induction melting followed by precisely controlled age-hardening processes at 480-500°C. Our computer-controlled furnaces with ±3°C temperature accuracy ensure optimal precipitation of Ni3Mo, Ni3Ti, and Fe2Mo intermetallic compounds, achieving consistent ultra-high strength properties.
Comprehensive Structural Testing
Our specialized testing protocols include advanced weldability assessment using controlled thermal severity tests, forming limit analysis for complex geometries, high-cycle fatigue testing up to 10^7 cycles, and accelerated atmospheric corrosion testing. These ensure optimal performance in demanding structural applications.
Custom Engineering Solutions
MetalZenith provides tailored age-hardening treatments, precision machining services, and comprehensive technical support for structural applications. Our metallurgical engineers work closely with clients to optimize material properties for specific load requirements and environmental conditions.
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