# Nickel Alloy N02200: Properties and Applications
## Introduction to Nickel Alloy N02200
Nickel Alloy N02200, also known as commercially pure nickel or UNS N02200, is a high-purity wrought nickel alloy with excellent corrosion resistance and electrical conductivity. This alloy is widely used in various industries due to its unique combination of properties.
## Chemical Composition
The chemical composition of Nickel Alloy N02200 is characterized by its high nickel content:
– Nickel (Ni): ≥ 99.0%
– Carbon (C): ≤ 0.15%
– Iron (Fe): ≤ 0.40%
– Manganese (Mn): ≤ 0.35%
– Silicon (Si): ≤ 0.35%
– Copper (Cu): ≤ 0.25%
– Sulfur (S): ≤ 0.01%
## Physical Properties
Nickel Alloy N02200 exhibits several notable physical properties:
– Density: 8.89 g/cm³ (0.321 lb/in³)
– Melting Point: 1435-1446°C (2615-2635°F)
– Electrical Resistivity: 6.84 μΩ·cm at 20°C
– Thermal Conductivity: 70 W/m·K at 20°C
– Coefficient of Thermal Expansion: 13.3 μm/m·K (20-100°C)
## Mechanical Properties
The mechanical properties of Nickel Alloy N02200 vary depending on the temper:
Keyword: uns n02200
### Annealed Condition
– Tensile Strength: 317-379 MPa (46-55 ksi)
– Yield Strength (0.2% offset): 59-138 MPa (8.5-20 ksi)
– Elongation: 40-50%
### Cold Worked Condition
– Tensile Strength: up to 758 MPa (110 ksi)
– Yield Strength (0.2% offset): up to 690 MPa (100 ksi)
– Elongation: 2-15%
## Corrosion Resistance
Nickel Alloy N02200 offers excellent corrosion resistance in various environments:
– Resistant to corrosion by neutral and alkaline salt solutions
– Excellent resistance to caustic alkalis at all concentrations and temperatures
– Good resistance to mineral acids, particularly hydrochloric and sulfuric acids
– Resistant to corrosion by fresh and salt water
– Performs well in food processing applications
## Applications of Nickel Alloy N02200
Due to its unique properties, Nickel Alloy N02200 finds applications in numerous industries:
### Chemical Processing
– Caustic handling equipment
– Chemical shipping drums
– Reaction vessels for fatty acid production
– Chlorination systems
### Electronics
– Battery components
– Electronic tube components
– Spark plug electrodes
– Transistor components
### Food Processing
– Food handling equipment
– Meat processing equipment
– Dairy equipment
– Brewing equipment
### Other Applications
– Marine engineering components
– Aerospace applications
– Heat exchangers
– Desalination plants
## Fabrication and Welding
Nickel Alloy N02200 can be readily fabricated using standard techniques:
### Forming
– Can be formed by all conventional methods
– Requires more power than steel due to higher work hardening rate
– Annealing between forming operations may be necessary
### Machining
– Similar to austenitic stainless steels
– Produces stringy chips
– Requires positive rake angles and rigid setups
### Welding
– Can be welded by all conventional methods
– Gas tungsten arc welding (GTAW) is preferred
– No post-weld heat treatment required
## Conclusion
Nickel Alloy N02200 is a versatile material with excellent corrosion resistance, good mechanical properties, and high electrical conductivity. Its wide range of applications across multiple industries makes it an important material for engineers and designers. When selecting materials for corrosive environments or electrical applications, Nickel All
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