Nickel Alloy N02200: Properties and Applications

Nickel Alloy N02200: Properties and Applications

# 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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