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Technical Specifications
Product Overview
Metallurgical Characteristics
Maraging 250 features a unique martensitic microstructure strengthened by precipitation of intermetallic compounds including Ni?Mo, Ni?Ti, and Fe?Mo. The low carbon content ensures excellent weldability while the controlled addition of nickel, cobalt, molybdenum, and titanium provides exceptional strength through age hardening. The fine martensitic matrix offers superior toughness compared to conventional high-strength steels.
Heat Treatment Process
MetalZenith employs a two-stage heat treatment process: solution annealing at 820°C followed by aging at 480°C for 3 hours. This controlled thermal processing ensures optimal precipitation of strengthening phases while maintaining dimensional stability and minimizing residual stresses critical for structural applications.
Advanced Manufacturing Process
Our production utilizes vacuum induction melting (VIM) followed by vacuum arc remelting (VAR) to achieve exceptional cleanliness and homogeneity. Controlled forging and rolling operations ensure optimal grain structure and mechanical property distribution, while our proprietary aging protocols deliver consistent ultra-high strength performance.
Specialized Quality Testing
MetalZenith conducts comprehensive testing including welding performance evaluation using standard structural welding procedures, forming limit analysis for complex geometries, high-cycle fatigue testing up to 10? cycles, and accelerated atmospheric corrosion testing per ASTM standards to ensure long-term structural integrity.
Structural Engineering Considerations
For building structures, Maraging 250 offers exceptional strength-to-weight ratios enabling lighter designs. In bridge engineering, its fatigue resistance and dimensional stability ensure long service life. For machinery manufacturing, the combination of strength and machinability allows complex component fabrication. In vehicle manufacturing, the material provides crash performance and weight reduction benefits. General engineering applications benefit from the predictable mechanical properties and excellent joining characteristics.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.03 |
| Nickel (Ni) | 17.0 - 19.0 |
| Cobalt (Co) | 8.0 - 9.0 |
| 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) | 1790 - 1930 |
| 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) | 20.1 |
| Thermal Expansion (×10??/K) | 10.1 |
| Elastic Modulus (GPa) | 186 |
| Poisson's Ratio | 0.31 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Bars, Forgings, Billets, Custom Shapes |
| Thickness Range | 3 - 200mm |
| Width Range | 100 - 2000mm |
| Length Range | 500 - 6000mm |
| Standards Compliance | ASTM A538, AMS 6514, DIN 1.2709 |
| Heat Treatment Condition | Solution Annealed + Aged |
| Surface Finish | Hot Rolled, Cold Finished, Machined |
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Our Advantages in Processing Maraging 250 Steel
Precision Vacuum Melting & Aging Process
MetalZenith utilizes advanced vacuum induction melting followed by controlled aging at 480°C to achieve optimal precipitation hardening. Our precise temperature control and atmosphere management ensure uniform microstructure and exceptional mechanical properties throughout the material thickness.
Comprehensive Structural Performance Testing
Our quality assurance includes specialized testing for structural applications: advanced welding performance evaluation, forming limit analysis, high-cycle fatigue testing, and accelerated atmospheric corrosion resistance testing to ensure superior performance in demanding structural environments.
Custom Structural Solutions & Engineering Support
MetalZenith provides comprehensive custom processing services including precision machining, heat treatment optimization, and dimensional inspection. Our technical team offers engineering support for structural design optimization and material selection to maximize performance in specific applications.
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