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Technical Specifications
Product Overview
Metallurgical Characteristics
XM-19 exhibits a fully austenitic microstructure stabilized by high nickel content and nitrogen addition. The controlled nitrogen content provides solid solution strengthening while enhancing pitting and crevice corrosion resistance. The absence of ferrite phase ensures excellent toughness and prevents sigma phase formation during elevated temperature exposure.
Heat Treatment Process
MetalZenith employs solution annealing at 1100-1150°C followed by rapid water quenching to achieve optimal corrosion resistance and mechanical properties. Our controlled atmosphere furnaces prevent surface oxidation and maintain precise temperature uniformity throughout the material cross-section.
Advanced Manufacturing Process
Our production process begins with vacuum induction melting using high-purity raw materials, followed by electroslag remelting for enhanced cleanliness. Hot working is performed within carefully controlled temperature ranges to prevent cracking, followed by solution annealing and descaling treatments to achieve superior surface quality.
Specialized Quality Testing
MetalZenith conducts comprehensive testing including pitting potential measurement exceeding 1000mV vs SCE, intergranular corrosion testing per ASTM A262 Practice E, stress corrosion cracking evaluation in boiling MgCl2 solution, and passivation film analysis using X-ray photoelectron spectroscopy to verify optimal surface chemistry.
Application-Specific Considerations
For chemical processing applications, XM-19 provides exceptional resistance to chloride-containing environments and organic acids. In food industry applications, the material meets FDA requirements with superior cleanability and bacterial resistance. Medical device applications benefit from biocompatibility and MRI compatibility. Marine applications leverage the high PREN value for seawater resistance, while architectural applications utilize the material's aesthetic appeal and long-term durability.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.03 |
| Chromium (Cr) | 20.0 - 22.0 |
| Nickel (Ni) | 23.0 - 25.0 |
| Molybdenum (Mo) | 6.0 - 7.0 |
| Nitrogen (N) | 0.15 - 0.25 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Copper (Cu) | 0.5 - 1.0 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 350 |
| Tensile Strength (MPa) | 690 - 900 |
| Elongation (%) | ≥ 35 |
| Hardness (HRB) | ≤ 95 |
| Pitting Resistance (PREN) | ≥ 42 |
| Impact Energy at RT (J) | ≥ 100 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 8.1 |
| Melting Point (°C) | 1350 - 1400 |
| Thermal Conductivity (W/m·K) | 14.2 |
| Thermal Expansion (×10??/K) | 16.5 |
| Electrical Resistivity (μΩ·cm) | 95 |
| Elastic Modulus (GPa) | 200 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Bars, Tubes, Forgings, Wire |
| Thickness Range | 0.5 - 80mm |
| Width Range | 1000 - 2500mm |
| Length Range | 2000 - 12000mm |
| Standards Compliance | ASTM A240, ASME SA-240, EN 10088 |
| Surface Finish | 2B, BA, No.4, No.8, Custom |
| Heat Treatment Condition | Solution Annealed and Pickled |
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Our Advantages in Processing XM-19 Stainless Steel
Advanced Vacuum Melting Technology
MetalZenith utilizes vacuum induction melting followed by electroslag remelting to achieve exceptional chemical homogeneity and ultra-low inclusion content. Our controlled atmosphere processing ensures optimal nitrogen content and prevents carbide precipitation, maximizing corrosion resistance and mechanical properties.
Comprehensive Corrosion Testing Protocol
MetalZenith conducts extensive corrosion testing including pitting potential measurement (>1000mV vs SCE), intergranular corrosion testing per ASTM A262 Practice E, stress corrosion cracking evaluation in chloride environments, and passivation film thickness analysis using XPS technology to ensure superior corrosion performance.
Specialized Processing & Technical Support
MetalZenith offers comprehensive custom processing including precision machining, specialized welding procedures, and surface finishing treatments. Our metallurgical experts provide technical consultation for material selection, fabrication guidelines, and application-specific heat treatment recommendations.
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