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Technical Specifications
Product Overview
Metallurgical Characteristics
Precipitation Hardened Stainless Steel features a martensitic matrix strengthened by controlled precipitation of copper-rich phases and niobium carbides. The microstructure consists of tempered martensite with uniformly distributed strengthening precipitates, providing exceptional strength while maintaining corrosion resistance through chromium passivation.
Heat Treatment Process
MetalZenith employs solution annealing at 1040-1060°C followed by rapid cooling to achieve supersaturated solid solution. Subsequent aging at 480-620°C for 1-4 hours promotes controlled precipitation of strengthening phases while optimizing the balance between strength, toughness, and corrosion resistance.
Advanced Manufacturing Process
Our state-of-the-art production facility utilizes vacuum induction melting followed by electroslag remelting to ensure chemical homogeneity and cleanliness. Controlled hot working and precision heat treatment in protective atmospheres guarantee optimal microstructure development and surface quality for critical applications.
Specialized Quality Testing
MetalZenith conducts comprehensive corrosion testing including pitting potential measurement (ASTM G61), intergranular corrosion testing (ASTM A262 Practice A), stress corrosion cracking evaluation (ASTM G36), and passivation film analysis using X-ray photoelectron spectroscopy to ensure optimal performance in aggressive environments.
Application-Specific Considerations
For chemical processing applications, our material meets NACE MR0175 requirements for sour service. Food industry applications benefit from FDA compliance and superior cleanability. Medical device applications leverage biocompatibility and high strength-to-weight ratio. Marine applications utilize excellent pitting and crevice corrosion resistance. Architectural applications benefit from superior surface finish retention and weathering resistance.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.07 |
| Chromium (Cr) | 15.0 - 17.5 |
| Nickel (Ni) | 3.0 - 5.0 |
| Copper (Cu) | 3.0 - 5.0 |
| Niobium (Nb) | 0.15 - 0.45 |
| Manganese (Mn) | ≤ 1.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.040 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 1170 |
| Tensile Strength (MPa) | 1310 - 1480 |
| Elongation (%) | ≥ 10 |
| Hardness (HRC) | 38 - 45 |
| Pitting Resistance (PREN) | ≥ 24 |
| Impact Energy at RT (J) | ≥ 27 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.80 |
| Melting Point (°C) | 1400 - 1440 |
| Thermal Conductivity (W/m·K) | 16.2 |
| Thermal Expansion (×10??/K) | 10.8 |
| Electrical Resistivity (μΩ·cm) | 80 |
| Elastic Modulus (GPa) | 200 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Bars, Rods, Wire, Forgings |
| Thickness Range | 0.5 - 80mm |
| Width Range | 500 - 2500mm |
| Length Range | 2000 - 12000mm |
| Standards Compliance | ASTM A564, AMS 5659, NACE MR0175 |
| Heat Treatment Condition | Solution Annealed + Aged (H1150) |
| Surface Finish | 2B, BA, No.4, Pickled & Passivated |
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Our Advantages in Processing Precipitation Hardened Stainless Steel
Advanced Precipitation Hardening Process
MetalZenith employs precisely controlled solution annealing at 1040-1060°C followed by optimized aging treatments to achieve maximum precipitation strengthening. Our advanced heat treatment protocols ensure uniform distribution of strengthening precipitates while maintaining excellent corrosion resistance and toughness.
Comprehensive Corrosion Testing Program
Our specialized testing protocols include pitting potential measurement (>350mV vs SCE), ASTM A262 intergranular corrosion testing, stress corrosion cracking evaluation per ASTM G36, and passivation film thickness analysis using XPS technology. This ensures optimal corrosion performance in aggressive chemical environments.
Custom Processing & Technical Support
MetalZenith provides tailored heat treatment schedules, custom mechanical property development, and comprehensive technical support for specific application requirements. Our metallurgical experts work closely with customers to optimize material performance for demanding chemical, medical, and marine applications.
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