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Technical Specifications
Product Overview
Metallurgical Characteristics
EN 1.4571 is an austenitic stainless steel with titanium stabilization that prevents carbide precipitation and intergranular corrosion. The titanium content, controlled at 5 times the carbon content minimum, forms stable titanium carbides instead of chromium carbides, maintaining the corrosion resistance of the chromium-depleted grain boundaries. The austenitic structure provides excellent ductility and toughness across a wide temperature range.
Heat Treatment Process
MetalZenith employs precise solution annealing at 1050-1100°C followed by rapid cooling to achieve optimal properties. The stabilization annealing at 850-900°C for 2-4 hours ensures complete titanium carbide formation. Our controlled atmosphere furnaces prevent oxidation and maintain surface quality during heat treatment. Post-treatment includes descaling and passivation for enhanced corrosion resistance.
Manufacturing Process Excellence
Our manufacturing process begins with vacuum induction melting using premium raw materials, followed by electroslag remelting for enhanced cleanliness. Hot working is performed between 1150-950°C with controlled cooling rates. Cold working operations utilize advanced drawing and rolling equipment with intermediate annealing cycles. Final processing includes precision machining, surface treatment, and comprehensive quality inspection.
Quality Standards & Compliance
MetalZenith's EN 1.4571 production complies with international standards including EN 10088-2, ASTM A240/A276/A312, and JIS G4303/G4304. Our quality management system encompasses incoming material inspection, in-process monitoring, and final product testing. Advanced testing capabilities include optical emission spectroscopy, tensile testing, hardness measurement, ultrasonic inspection, and specialized corrosion testing per ASTM A262 Practice A, E, and F.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 17.0 - 20.0 |
| Nickel (Ni) | 10.0 - 14.0 |
| Molybdenum (Mo) | 2.0 - 3.0 |
| Titanium (Ti) | 5 × C - 0.70 |
| Nitrogen (N) | ≤ 0.10 |
| Iron (Fe) | Balance |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Rm) | 520 - 720 MPa |
| Yield Strength (Rp0.2) | ≥ 205 MPa |
| Elongation (A5) | ≥ 40% |
| Hardness (HB) | ≤ 215 |
| Hardness (HV) | ≤ 230 |
| Impact Energy (KV at 20°C) | ≥ 60 J |
| Young's Modulus | 200 GPa |
| Shear Modulus | 81 GPa |
| Poisson's Ratio | 0.28 |
| Fatigue Limit (107 cycles) | 240 MPa |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 8.0 g/cm³ |
| Melting Point | 1400 - 1450°C |
| Thermal Expansion (20-100°C) | 16.0×10-6/K |
| Thermal Expansion (20-200°C) | 16.5×10-6/K |
| Thermal Expansion (20-300°C) | 17.0×10-6/K |
| Thermal Conductivity (20°C) | 15 W/m·K |
| Specific Heat Capacity | 500 J/kg·K |
| Electrical Resistivity (20°C) | 0.75 µΩ·m |
| Magnetic Permeability | μr ≤ 1.02 |
| Curie Temperature | Non-magnetic |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Round bars, square bars, flat bars, sheets, plates, tubes, pipes, wire, forgings |
| Round Bar Diameter | 6mm - 300mm |
| Sheet/Plate Thickness | 0.5mm - 100mm |
| Tube Outer Diameter | 6mm - 219mm |
| Length | Up to 12 meters (custom lengths available) |
| Surface Finish | Hot rolled, cold drawn, bright annealed, pickled, polished |
| Tolerance | h9, h11 for bars; ±0.1mm for sheets |
| Standards | EN 10088, ASTM A240, A276, A312, JIS G4303, G4304 |
| Condition | Solution annealed (1A), soft annealed |
| Testing | Mill test certificate 3.1, additional testing available |
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Our Advantages in Processing EN 1.4571
Advanced Vacuum Melting Technology
MetalZenith utilizes state-of-the-art vacuum induction melting (VIM) and electroslag remelting (ESR) processes to produce EN 1.4571 with exceptional purity and homogeneity. Our controlled atmosphere melting eliminates inclusions and ensures precise titanium stabilization for optimal intergranular corrosion resistance.
Comprehensive Quality Control System
Our integrated quality management system features advanced spectroscopic analysis, automated mechanical testing, and real-time process monitoring. Every batch of EN 1.4571 undergoes rigorous testing including ASTM A262 intergranular corrosion testing, ensuring consistent quality and performance that exceeds industry standards.
Global Supply Chain & Custom Solutions
MetalZenith offers flexible customization options for EN 1.4571 including specialized heat treatments, precision machining, and custom dimensions. Our global distribution network ensures reliable delivery worldwide, while our technical support team provides engineering assistance for application-specific requirements.
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