# Nickel 201 UNS N02201: Properties and Applications
## Introduction to Nickel 201
Nickel 201 (UNS N02201) is a commercially pure wrought nickel alloy that offers excellent resistance to corrosion in various environments. This material is particularly valued for its high thermal and electrical conductivity, making it a popular choice in many industrial applications.
## Chemical Composition
The chemical composition of Nickel 201 contributes significantly to its properties:
- Nickel (Ni): ≥ 99.0%
- Iron (Fe): ≤ 0.40%
- Manganese (Mn): ≤ 0.35%
- Copper (Cu): ≤ 0.25%
- Carbon (C): ≤ 0.02%
- Sulfur (S): ≤ 0.01%
Keyword: Nickel 201 UNS N02201
## Physical Properties
Nickel 201 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) at 20°C
- Electrical Resistivity: 0.096 µΩ·m at 20°C
## Mechanical Properties
The mechanical properties of Nickel 201 vary depending on the temper and form:
| Condition | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| Annealed | 380-480 | 100-200 | 40-50 |
| Cold Worked | 550-750 | 350-550 | 15-30 |
## Corrosion Resistance
Nickel 201 demonstrates excellent corrosion resistance in:
- Reducing environments
- Alkaline solutions
- Neutral and slightly acidic solutions
- Chloride stress corrosion cracking environments
It maintains good resistance to corrosion by non-oxidizing acids, particularly hydrochloric and sulfuric acids at moderate temperatures and concentrations.
## Applications of Nickel 201
Chemical Processing
Nickel 201 is widely used in chemical processing equipment due to its excellent resistance to corrosion by various chemicals. Common applications include:
- Reactors
- Heat exchangers
- Piping systems
- Valves and pumps
Electronics Industry
The alloy’s excellent electrical conductivity makes it suitable for:
- Lead frames
- Battery components
- Electronic connectors
Food Processing
Nickel 201 is used in food processing equipment because of its:
- Corrosion resistance
- Non
