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Technical Specifications
Product Overview
Metallurgical Characteristics
EN 1.4539 is a super austenitic stainless steel with a fully austenitic microstructure stabilized by high nickel content and balanced chromium-molybdenum additions. The steel exhibits exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking due to its high PREN (Pitting Resistance Equivalent Number) value of approximately 35-40.
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 ensure uniform heating throughout the material cross-section. Post-annealing pickling and passivation treatments enhance surface quality and corrosion resistance.
Manufacturing Process
Our production process begins with vacuum induction melting of premium raw materials, followed by electroslag remelting for enhanced cleanliness. Hot working is performed within the temperature range of 1050-1200°C, with careful control of reduction ratios to optimize grain structure. Cold working operations utilize advanced rolling and drawing equipment to achieve precise dimensional tolerances and superior surface finish.
Quality Standards & Testing
All EN 1.4539 products undergo comprehensive testing including chemical analysis by optical emission spectroscopy, mechanical property verification, intergranular corrosion testing per ASTM A262, and non-destructive examination. MetalZenith maintains compliance with EN 10204 Type 3.1 certification requirements and provides full traceability documentation for each product batch.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.020 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.035 |
| Chromium (Cr) | 19.0 - 23.0 |
| Nickel (Ni) | 24.0 - 26.0 |
| Molybdenum (Mo) | 4.0 - 5.0 |
| Copper (Cu) | 1.0 - 2.0 |
| Nitrogen (N) | ≤ 0.10 |
| Iron (Fe) | Balance |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Rm) | 490 - 690 MPa |
| Yield Strength (Rp0.2) | ≥ 220 MPa |
| Elongation (A5) | ≥ 35% |
| Hardness (HB) | ≤ 250 |
| Impact Energy (KV at 20°C) | ≥ 100 J |
| Young's Modulus | 200 GPa |
| Fatigue Limit | 245 MPa |
| Poisson's Ratio | 0.30 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 8.0 g/cm³ |
| Melting Point | 1350-1400°C |
| Thermal Conductivity (20°C) | 12 W/m·K |
| Thermal Expansion (20-100°C) | 14.2×10-6/K |
| Specific Heat Capacity | 460 J/kg·K |
| Electrical Resistivity (20°C) | 1.05 µΩ·m |
| Magnetic Permeability | Non-magnetic (µr ≈ 1.02) |
| Curie Temperature | Not applicable |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Plates, Sheets, Bars, Rods, Tubes, Pipes, Forgings |
| Plate Thickness | 6-200 mm |
| Sheet Thickness | 0.5-6 mm |
| Bar Diameter | 10-300 mm |
| Tube Outer Diameter | 6-610 mm |
| Standards | EN 10028-7, ASTM A240, JIS G4304/4305 |
| Surface Finish | 2B, BA, No.4, HL, Mirror, Pickled |
| Tolerance | ±0.1mm (thickness), ±3mm (width/length) |
| Length | Up to 12 meters (standard), Custom lengths available |
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Our Advantages in Processing EN 1.4539
Advanced Vacuum Melting Technology
MetalZenith utilizes state-of-the-art vacuum induction melting combined with electroslag remelting to achieve superior cleanliness and homogeneity in EN 1.4539 production, ensuring exceptional corrosion resistance and mechanical properties.
Comprehensive Quality Control System
Our integrated quality management system includes real-time chemical analysis, advanced mechanical testing, and complete traceability from raw materials to finished products, guaranteeing consistent performance and compliance with international standards.
Custom Processing & Global Supply
MetalZenith offers extensive customization capabilities including precision machining, specialized heat treatments, and custom dimensions, supported by our global distribution network for reliable worldwide delivery.
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