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July 7, 2025| | 0 Comment

Alloy C-2000 (UNS N06200) Properties and Applications

# Alloy C-2000 (UNS N06200) Properties and Applications

## Introduction to Alloy C-2000

Alloy C-2000, also known as UNS N06200, is a nickel-chromium-molybdenum alloy with exceptional corrosion resistance and mechanical properties. Developed to address the limitations of traditional nickel alloys, C-2000 offers superior performance in highly corrosive environments.

## Chemical Composition

The unique composition of Alloy C-2000 contributes to its outstanding properties:

Nickel (Ni): 59% minimum

Chromium (Cr): 23%

Molybdenum (Mo): 16%

Copper (Cu): 1.6%

Iron (Fe): 3% maximum

Manganese (Mn): 0.5% maximum

Silicon (Si): 0.08% maximum

Carbon (C): 0.01% maximum

## Key Properties of Alloy C-2000

### Corrosion Resistance

Alloy C-2000 exhibits excellent resistance to a wide range of corrosive media, including:

  • Sulfuric acid

  • Hydrochloric acid

  • Phosphoric acid

  • Oxidizing and reducing environments

  • Chloride-induced stress corrosion cracking

### Mechanical Properties

The alloy maintains good mechanical strength across a wide temperature range:

  • Tensile strength: 100-120 ksi (690-830 MPa)

  • Yield strength: 45-60 ksi (310-415 MPa)

  • Elongation: 50-60%

  • Hardness: 80-100 HRB

### Thermal Properties

Alloy C-2000 performs well in high-temperature applications:

  • Melting range: 1330-1380°C (2425-2515°F)

  • Thermal expansion coefficient: 12.8 μm/m·°C (20-100°C)

  • Thermal conductivity: 10.5 W/m·K

## Applications of Alloy C-2000

### Chemical Processing Industry

The alloy is widely used in chemical processing equipment:

  • Reactors and pressure vessels

  • Heat exchangers

  • Piping systems

  • Valves and pumps

### Pollution Control Systems

Alloy C-2000 is ideal for flue gas desulfurization systems and other pollution control applications where resistance to acidic environments is crucial.

### Pharmaceutical Industry

The material’s corrosion resistance makes it suitable for pharmaceutical manufacturing equipment that must maintain high purity standards.

### Marine Applications

Its excellent resistance to seawater corrosion makes C-2000 valuable for marine components exposed to harsh saltwater environments.

## Fabrication and Welding

Alloy C-2000 can be fabricated using standard techniques:

  • Hot working: 1050-1200°C (1920-2190°F)

  • Cold working: Annealed condition preferred

  • Welding: GTAW and GMAW processes recommended

  • Post-weld heat treatment: Generally not required

## Comparison with Other Nickel Alloys

Compared to alloys like C-276 and C-22, Alloy C-2000 offers: