# 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 thermal conductivity. This alloy is widely used in various industries due to its unique combination of properties.
## Chemical Composition of N02200
The chemical composition of Nickel Alloy N02200 is characterized by its high nickel content:
– Nickel (Ni): 99.0% minimum
– Iron (Fe): 0.40% maximum
– Manganese (Mn): 0.35% maximum
– Copper (Cu): 0.25% maximum
– Carbon (C): 0.15% maximum
– Silicon (Si): 0.35% maximum
– Sulfur (S): 0.01% maximum
## 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)
– Thermal Conductivity: 70 W/m·K (48.5 BTU·in/hr·ft²·°F)
– Electrical Resistivity: 0.086 μΩ·m
– Magnetic Permeability: 1.01 (non-magnetic when annealed)
## Mechanical Properties
The mechanical properties of N02200 vary depending on its temper condition:
### Annealed Condition
– Tensile Strength: 345-485 MPa (50-70 ksi)
– Yield Strength: 103-345 MPa (15-50 ksi)
– Elongation: 40-50%
– Hardness: 45-90 HRB
### Cold Worked Condition
– Tensile Strength: up to 760 MPa (110 ksi)
– Yield Strength: up to 690 MPa (100 ksi)
– Elongation: 2-15%
– Hardness: up to 100 HRB
## Corrosion Resistance
Nickel Alloy N02200 offers excellent corrosion resistance in various environments:
– Resistant to caustic alkalis up to 50% concentration at boiling temperatures
– Performs well in neutral and alkaline salt solutions
– Resistant to most organic acids and compounds
– Excellent resistance to distilled and natural waters
– Limited resistance to oxidizing acids like nitric acid
## Fabrication and Welding
N02200 is relatively easy to fabricate and weld:
– Can be readily formed by standard methods
– Welding can be performed using GTAW (TIG), GMAW (MIG), and SMAW (stick) processes
– Preheating is generally not required
– Post-weld heat treatment is not necessary for most applications
## Applications of Nickel Alloy N02200
Due to its unique properties, N02200 finds applications in various industries:
Keyword: uns n02200
### Chemical Processing
– Caustic soda production equipment
– Food processing equipment
– Synthetic fiber manufacturing
### Electronics
– Lead frames
– Battery components
– Electronic housings
### Aerospace
– Rocket engine components
– Aircraft turbine blades
– Spacecraft structural components
### Other Applications
– Marine engineering components
– Heat exchangers
– Nuclear reactors
– Desalination plants
## Advantages of Using N02200
The primary advantages of Nickel Alloy N02200 include:
– Excellent corrosion resistance in many environments
– High thermal and electrical conductivity
– Good mechanical properties over a wide temperature range
– Ease of fabrication and welding
– Non-magnetic properties in annealed condition
## Limitations
While N02200 offers many benefits, it has some limitations:
– Limited resistance to oxidizing acids
– Higher cost compared to some alternative materials
– Requires proper handling to avoid contamination during fabrication
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