# Nickel Alloy UNS N02200: Properties and Applications
## Introduction to UNS N02200
Nickel Alloy UNS N02200, also known as commercially pure nickel, is a versatile material with excellent corrosion resistance and high thermal conductivity. This alloy is widely used in various industries due to its unique combination of properties.
## Chemical Composition
The chemical composition of UNS N02200 is primarily nickel, with small amounts of other elements:
– Nickel (Ni): ≥ 99.0%
– Iron (Fe): ≤ 0.40%
– Manganese (Mn): ≤ 0.35%
– Silicon (Si): ≤ 0.35%
– Copper (Cu): ≤ 0.25%
– Carbon (C): ≤ 0.15%
## Physical Properties
UNS N02200 exhibits several notable physical properties:
– Density: 8.89 g/cm³
– Melting Point: 1435-1446°C (2615-2635°F)
– Thermal Conductivity: 70 W/m·K
– Electrical Resistivity: 0.096 µΩ·m
– Modulus of Elasticity: 180 GPa (26 x 10⁶ psi)
## Mechanical Properties
The mechanical properties of UNS N02200 vary depending on the temper condition:
### Annealed Condition
– Tensile Strength: 345-485 MPa (50-70 ksi)
– Yield Strength: 105-275 MPa (15-40 ksi)
– Elongation: 30-45%
### Cold Worked Condition
– Tensile Strength: up to 760 MPa (110 ksi)
– Yield Strength: up to 690 MPa (100 ksi)
– Elongation: 2-10%
## Corrosion Resistance
UNS N02200 offers excellent corrosion resistance in various environments:
– Resistant to reducing chemicals
– Performs well in caustic environments
– Good resistance to neutral and alkaline salt solutions
– Excellent resistance to distilled and natural waters
– Vulnerable to oxidizing environments and acids
## Applications of UNS N02200
This nickel alloy finds applications in numerous industries:
### Chemical Processing
– Equipment for caustic soda production
– Handling of organic compounds
– Food processing equipment
### Electronics
– Lead frames
– Battery components
– Electronic housings
### Aerospace
– Rocket engine components
– Turbine blades
– Heat exchangers
### Other Applications
– Marine engineering components
– Nuclear power systems
– Desalination plants
Keyword: uns n02200
## Fabrication and Welding
UNS N02200 can be readily fabricated using standard techniques:
– Hot working should be performed between 650-1230°C (1200-2250°F)
– Cold working requires intermediate annealing
– Welding can be done using TIG, MIG, and resistance welding methods
– Post-weld heat treatment is generally not required
## Conclusion
Nickel Alloy UNS N02200 is a highly versatile material with excellent corrosion resistance, good mechanical properties, and outstanding thermal and electrical conductivity. Its wide range of applications across various industries makes it an essential material for demanding environments where purity and performance are critical.