Nickel 97 Cobalt 3 Alloy,Ni3Co Alloy,Nickel Cobalt Alloy,E FORU

### **Nickel 97 / Cobalt 3 Alloy (Ni3Co) - High-Purity Nickel-Cobalt Alloy** #### **Overview** **Nickel 97/Cobalt 3 Alloy** is a high-purity nickel-cobalt alloy characterized by its excellent thermal stability, good electrical conductivity, and enhanced mechanical properties compared to pure nickel. The addition of 3% cobalt to the nickel matrix provides solid solution strengthening while maintaining the favorable corrosion resistance and magnetic properties of nickel. This alloy serves as an important base material for specialized applications in electronics, aerospace, and chemical processing industries where pure nickel requires modest property enhancements. --- #### **Chemical Composition (Weight %)** | Element | Content (%) | Function | |---------|-------------|-----------| | **Nickel (Ni)** | **96.5-97.5%** | Base element providing corrosion resistance and matrix | | **Cobalt (Co)** | **2.5-3.5%** | Solid solution strengthening; enhances thermal stability | | **Iron (Fe)** | **≤ 0.10%** | Controlled impurity | | **Manganese (Mn)** | **≤ 0.05%** | Deoxidizer residue | | **Silicon (Si)** | **≤ 0.05%** | Controlled impurity | | **Carbon (C)** | **≤ 0.02%** | Minimized to prevent carbide formation | | **Copper (Cu)** | **≤ 0.05%** | Controlled impurity | | **Sulfur (S)** | **≤ 0.005%** | Strictly controlled for purity | --- #### **Physical & Mechanical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | **8.85 g/cm³** | | **Melting Point** | **1450°C** (2642°F) | | **Electrical Resistivity** | **9.5 μΩ·cm** (at 20°C) | | **Thermal Conductivity** | **70 W/m·K** (at 20°C) | | **Coefficient of Thermal Expansion** | **13.5 × 10⁻⁶/°C** (20-100°C) | | **Specific Heat Capacity** | **440 J/kg·K** | | **Tensile Strength** | **400-500 MPa** (annealed condition) | | **Yield Strength (0.2% Offset)** | **120-180 MPa** (annealed condition) | | **Elongation** | **40-50%** (annealed condition) | | **Modulus of Elasticity** | **200 GPa** | | **Hardness** | **60-80 HRB** (annealed condition) | | **Curie Temperature** | **~360°C** (680°F) | --- #### **Key Characteristics & Applications** **Key Characteristics:** - **Excellent Corrosion Resistance**: Comparable to pure nickel in most environments - **Good Thermal Stability**: Maintains properties at elevated temperatures - **Enhanced Strength**: Superior mechanical properties to pure nickel - **Good Electrical Conductivity**: Suitable for electronic applications - **Soft Magnetic Properties**: Useful in magnetic shielding applications - **Good Fabricability**: Can be formed and welded using standard methods **Typical Applications:** - **Electronics Industry**: Lead frames, connectors, and electronic packaging - **Aerospace Components**: Bushings, bearings, and structural parts - **Chemical Processing**: Equipment for caustic environments - **Battery Technology**: Current collectors and battery components - **Medical Devices**: Surgical instruments and implantable devices - **Magnetic Shielding**: Sensitive instrument protection - **Thermal Management**: Heat exchanger components --- #### **International Standards & Specifications** | Standard | Designation | Description | |----------|-------------|-------------| | **ASTM** | **B160** | Standard for nickel rod and bar | | **UNS** | **N02270** | Unified Numbering System designation | | **ISO** | **NW 2200** | Nickel and nickel alloy classification | | **AMS** | **AMS 5550** | Aerospace material specification | | **DIN** | **2.4060** | German standard for nickel alloys | | **GB/T** | **NS 3102** | Chinese national standard | --- #### **Manufacturing & Processing** **Available Forms:** - **Rod & Bar**: 3 mm to 200 mm diameter - **Wire**: 0.1 mm to 10 mm diameter - **Sheet & Strip**: 0.05 mm to 6 mm thickness - **Plate**: 6 mm to 50 mm thickness - **Forgings**: Custom shapes and sizes **Processing Guidelines:** - **Annealing Temperature**: 750-850°C (1380-1560°F) - **Hot Working Temperature**: 1100-1200°C (2010-2190°F) - **Cold Working**: Excellent capability with intermediate annealing - **Welding**: All standard methods applicable (TIG, MIG, Resistance) - **Machinability**: Similar to pure nickel (approximately 20% of free-cutting brass) --- #### **Quality Control & Testing** - **Chemical Analysis**: Per ASTM E1473 - **Mechanical Testing**: Per ASTM E8/E8M - **Non-Destructive Testing**: UT, RT, PT as required - **Metallographic Examination**: Per ASTM E3 - **Corrosion Testing**: Per ASTM G28 for critical applications --- #### **Summary** **Nickel 97/Cobalt 3 Alloy** represents a refined nickel-base material that offers an optimal balance between the excellent corrosion resistance of pure nickel and enhanced mechanical properties provided by cobalt addition. Its high purity, good thermal and electrical conductivity, and improved strength make it suitable for demanding applications in electronics, aerospace, and chemical processing industries. The alloy maintains good fabricability while offering superior performance characteristics compared to pure nickel, particularly in applications requiring moderate strength improvements and thermal stability. Well-established in international standards and manufacturing practices, this alloy continues to serve specialized applications where conventional nickel alloys may not provide sufficient mechanical performance.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3219 gallon liquid totes Special package is available on request.