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Technical Specifications
Product Overview
Metallurgical Characteristics
UNS N06625 is a solid-solution strengthened nickel-chromium-molybdenum alloy with excellent metallurgical stability. The alloy's austenitic structure provides superior resistance to chloride-ion stress-corrosion cracking and exceptional performance in oxidizing and reducing environments up to 980°C. MetalZenith's controlled processing ensures optimal precipitation of strengthening phases while maintaining excellent ductility and toughness.
Heat Treatment Processes
MetalZenith employs precision heat treatment protocols including solution annealing at 1150°C followed by rapid cooling to achieve optimal mechanical properties. Our controlled atmosphere furnaces prevent oxidation and decarburization while ensuring uniform temperature distribution. Stress relief treatments at 870°C are available for components requiring dimensional stability.
Manufacturing Process Excellence
Our integrated manufacturing process begins with vacuum induction melting of premium raw materials, followed by electroslag remelting for enhanced cleanliness. Hot working operations utilize computer-controlled rolling and forging equipment to achieve precise dimensional control and optimal grain structure. Cold working capabilities include precision drawing, rolling, and machining to final specifications.
Quality Standards & Testing
MetalZenith maintains compliance with international standards including ASTM B443, AMS 5599, and EN 2.4856. Our comprehensive testing protocols encompass chemical analysis via optical emission spectroscopy, mechanical testing per ASTM standards, non-destructive examination including ultrasonic and dye penetrant testing, and microstructural evaluation. Complete material traceability and certification documentation accompany all shipments, ensuring full compliance with aerospace, nuclear, and chemical processing industry requirements.
🧪 Chemical Composition
Element | Composition (%) |
---|---|
Nickel (Ni) | 58.0 min |
Chromium (Cr) | 20.0-23.0 |
Molybdenum (Mo) | 8.0-10.0 |
Niobium + Tantalum (Nb+Ta) | 3.15-4.15 |
Iron (Fe) | 5.0 max |
Carbon (C) | 0.10 max |
Manganese (Mn) | 0.50 max |
Silicon (Si) | 0.50 max |
Phosphorus (P) | 0.015 max |
Sulfur (S) | 0.015 max |
Aluminum (Al) | 0.40 max |
Titanium (Ti) | 0.40 max |
Cobalt (Co) | 1.0 max |
⚙️ Mechanical Properties
Property | Value |
---|---|
Tensile Strength (Room Temperature) | ≥ 827 MPa (120 ksi) |
Yield Strength (0.2% Offset) | ≥ 414 MPa (60 ksi) |
Elongation in 50mm | ≥ 30% |
Reduction of Area | ≥ 50% |
Hardness (Brinell) | ≤ 250 HB |
Hardness (Rockwell C) | ≤ 25 HRC |
Impact Energy (Charpy V-notch, Room Temp) | ≥ 150 J (110 ft-lb) |
Fatigue Strength (107 cycles) | 380 MPa |
Young's Modulus | 208 GPa (30.2×106 psi) |
Shear Modulus | 80 GPa |
Poisson's Ratio | 0.31 |
🔬 Physical Properties
Property | Value |
---|---|
Density | 8.44 g/cm³ (0.305 lb/in³) |
Melting Point | 1290-1350°C (2350-2460°F) |
Thermal Conductivity (21°C) | 9.8 W/m·K (5.7 BTU/hr·ft·°F) |
Thermal Conductivity (649°C) | 19.5 W/m·K (11.3 BTU/hr·ft·°F) |
Thermal Expansion (20-100°C) | 12.8×10-6/K (7.1×10-6/°F) |
Thermal Expansion (20-649°C) | 14.6×10-6/K (8.1×10-6/°F) |
Specific Heat (21°C) | 410 J/kg·K (0.098 BTU/lb·°F) |
Electrical Resistivity (21°C) | 1.29 µΩ·m (50.8 µΩ·in) |
Magnetic Permeability | 1.0015 (Non-magnetic) |
Curie Temperature | None (Paramagnetic) |
📏 Product Specifications
Specification | Available Options |
---|---|
Product Forms | Round Bar, Flat Bar, Plate, Sheet, Strip, Wire, Tube, Pipe, Forging Stock |
Round Bar Diameter | 6mm - 300mm (0.25' - 12') |
Flat Bar Dimensions | Width: 10-200mm, Thickness: 3-50mm |
Plate Thickness | 6mm - 150mm (0.25' - 6') |
Sheet Thickness | 0.5mm - 6mm (0.02' - 0.25') |
Tube/Pipe OD | 6mm - 610mm (0.25' - 24') |
Standards Compliance | ASTM B443, B446, B564, B705; AMS 5599, 5666; UNS N06625 |
Surface Finish | Hot Rolled, Cold Rolled, Annealed, Pickled, Polished, Machined |
Dimensional Tolerance | ±0.1mm to ±0.5mm depending on form and size |
Length Options | Standard: 3m, 6m, 12m; Custom lengths available |
Condition | Solution Annealed, Hot Worked, Cold Worked |
Let Us Create Success for Your Project
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Our Advantages in Processing UNS N06625

Advanced Vacuum Melting Technology
MetalZenith employs state-of-the-art vacuum induction melting (VIM) and electroslag remelting (ESR) processes to produce UNS N06625 with exceptional cleanliness, homogeneous composition, and superior mechanical properties. Our controlled atmosphere processing eliminates inclusions and ensures optimal metallurgical structure.
Comprehensive Quality Control Systems
Our integrated quality management system features real-time chemical analysis, advanced mechanical testing, and complete traceability from raw materials to finished products. MetalZenith's laboratory capabilities include spectrographic analysis, tensile testing, and microstructural examination to guarantee material compliance with international standards.


Custom Processing & Global Supply Chain
MetalZenith offers extensive customization capabilities including precision machining, specialized heat treatments, and custom dimensions. Our global distribution network ensures reliable delivery worldwide, supported by technical engineering services and application-specific material optimization for demanding industrial requirements.
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