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Nickel 200 (UNS N02200) Material Properties and Applications
Nickel 200, designated as UNS N02200, is a commercially pure wrought nickel alloy known for its excellent mechanical properties, corrosion resistance, and thermal conductivity. This material is widely used in various industries due to its reliability and versatility.
Chemical Composition
The chemical composition of Nickel 200 is primarily nickel (Ni) with a minimum purity of 99.6%. The alloy also contains trace amounts of other elements, including:
- Carbon (C): ≤ 0.15%
- Iron (Fe): ≤ 0.40%
- Manganese (Mn): ≤ 0.35%
- Silicon (Si): ≤ 0.35%
- Copper (Cu): ≤ 0.25%
Mechanical Properties
Nickel 200 exhibits impressive mechanical properties, making it suitable for demanding applications. Key properties include:
- Tensile Strength: 380 – 480 MPa
- Yield Strength: 100 – 200 MPa
- Elongation: 40 – 50%
- Hardness: 80 – 120 HB
Physical Properties
The physical characteristics of Nickel 200 contribute to its performance in various environments:
- Density: 8.89 g/cm³
- Melting Point: 1435 – 1446°C
- Thermal Conductivity: 70 W/m·K
- Electrical Resistivity: 0.096 µΩ·m
Corrosion Resistance
Nickel 200 offers outstanding resistance to corrosion in a wide range of environments, including:
- Alkaline solutions
- Neutral and acidic salts
- Organic acids
- Chlorine and hydrogen chloride gases
However, it is not recommended for use in oxidizing environments or strong acids like nitric acid.
Applications
Due to its unique combination of properties, Nickel 200 is used in numerous industries:
- Chemical Processing: Equipment for handling caustic soda and other alkalis
- Food Processing: Components requiring high purity and corrosion resistance
- Electronics: Battery components and lead frames
- Aerospace: Rocket engine components
- Marine: Pump shafts and valve components
Fabrication and Welding
Nickel 200 can be easily fabricated using standard techniques:
- Machining: Requires sharp tools and slow speeds
- Welding: Can be welded using TIG, MIG, and resistance welding methods
- Forming: Excellent cold working properties
Keyword: uns n02200
When welding Nickel 200, it’s important to use matching filler metals and maintain proper shielding to prevent contamination.
Conclusion
Nickel 200 (UN