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Technical Specifications
Product Overview
Metallurgical Characteristics
UNS N08800 exhibits a stable austenitic structure with excellent resistance to oxidation, carburization, and sulfidation at elevated temperatures up to 815°C. The alloy's balanced nickel-iron-chromium composition provides superior creep resistance and maintains mechanical integrity under thermal cycling conditions. Precipitation of gamma-prime and carbide phases contributes to enhanced high-temperature strength.
Heat Treatment Process
MetalZenith's optimized heat treatment involves solution annealing at 1010-1120°C followed by rapid cooling to achieve optimal microstructure. This process dissolves carbides and ensures uniform grain structure, maximizing corrosion resistance and mechanical properties. Stress relief treatments at 870-900°C may be applied for specific applications requiring dimensional stability.
Manufacturing Process Excellence
Our advanced manufacturing employs vacuum induction melting (VIM) for precise chemical control, followed by electroslag remelting (ESR) to eliminate inclusions and achieve superior cleanliness. Hot working operations are performed within controlled temperature ranges (1050-1200°C) to optimize grain structure and mechanical properties. Cold working capabilities enable precise dimensional control and enhanced surface finish.
Quality Standards & Testing
MetalZenith maintains compliance with ASTM B407, ASME SB-407, and EN 1.4876 standards. Comprehensive testing protocols include chemical analysis via optical emission spectroscopy, mechanical testing per ASTM standards, intergranular corrosion testing (ASTM A262), and non-destructive examination including ultrasonic and eddy current inspection. Material test certificates (MTC) provide complete traceability and performance verification.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.10 |
| Manganese (Mn) | ≤ 1.50 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 19.0 - 23.0 |
| Nickel (Ni) | 30.0 - 35.0 |
| Aluminum (Al) | 0.15 - 0.60 |
| Titanium (Ti) | 0.15 - 0.60 |
| Copper (Cu) | ≤ 0.75 |
| Iron (Fe) | Balance |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Room Temperature) | ≥ 515 MPa |
| Yield Strength (0.2% Offset) | ≥ 205 MPa |
| Elongation in 50mm | ≥ 30% |
| Reduction of Area | ≥ 50% |
| Hardness (Brinell) | ≤ 192 HB |
| Impact Energy (Charpy V-notch) | ≥ 100 J |
| Young's Modulus | 200 GPa |
| Fatigue Limit (10&sup7; cycles) | 240 MPa |
| Creep Rupture Strength (649°C, 100,000h) | 35 MPa |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 7.95 g/cm³ |
| Melting Point | 1357-1385°C |
| Thermal Conductivity (100°C) | 11.5 W/m·K |
| Thermal Conductivity (500°C) | 21.4 W/m·K |
| Thermal Expansion (20-100°C) | 14.4×10-6/K |
| Thermal Expansion (20-500°C) | 16.8×10-6/K |
| Specific Heat (20°C) | 460 J/kg·K |
| Electrical Resistivity (20°C) | 0.989 µΩ·m |
| Magnetic Permeability | 1.008 (Paramagnetic) |
| Curie Temperature | -101°C |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Round Bar, Square Bar, Flat Bar, Plate, Sheet, Strip, Tube, Pipe, Wire, Forging |
| Round Bar Diameter | 6mm - 300mm |
| Plate Thickness | 3mm - 100mm |
| Sheet Thickness | 0.5mm - 6mm |
| Tube OD Range | 6mm - 219mm |
| Standards | ASTM B407, ASTM B163, ASTM B515, ASME SB-407, EN 1.4876, JIS NCF 800 |
| Surface Finish | Hot Rolled, Cold Rolled, Annealed, Pickled, Polished, Machined |
| Dimensional Tolerance | ±0.1mm to ±0.5mm (depending on form and size) |
| Length Options | Random Length, Fixed Length, Custom Cut-to-Length |
Let Us Create Success for Your Project
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Our Advantages in Processing UNS N08800
Advanced Vacuum Melting Technology
MetalZenith employs cutting-edge vacuum induction melting (VIM) and electroslag remelting (ESR) processes, ensuring superior chemical homogeneity, reduced inclusion content, and optimal metallurgical structure for enhanced high-temperature performance and corrosion resistance.
Comprehensive Quality Control System
Our integrated quality management system features advanced spectroscopic analysis, mechanical testing laboratories, and non-destructive examination facilities, providing complete material certification and traceability with ISO 9001:2015, ASME, and PED compliance.
Custom Processing & Global Supply
MetalZenith offers extensive customization capabilities including precision machining, heat treatment optimization, and specialized surface finishes, supported by our global distribution network ensuring timely delivery and technical support worldwide.
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