Monel 400 (UNS N04400)
Nickel-Copper Alloy with Exceptional Resistance to Seawater, Hydrofluoric Acid, and Alkaline Media, Combined with High Strength, Excellent Toughness, and Long-Term Reliability.
Introduction
Monel 400 is a nickel-copper alloy, Offering Excellent Resistance to Seawater, Acids, and Alkalis, with High Strength, Good Toughness, and Outstanding Performance in Harsh Corrosive Environments.
Chemical Composition
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 63.0 min |
| Copper (Cu) | 28.0 – 34.0 |
| Iron (Fe) | ≤ 2.5 |
| Manganese (Mn) | ≤ 2.0 |
| Carbon (C) | ≤ 0.3 |
| Silicon (Si) | ≤ 0.5 |
| Sulfur (S) | ≤ 0.024 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 480 MPa |
| Yield Strength (0.2%) | ≥ 170 MPa |
| Elongation | ≥ 35% |
| Hardness | ≤ 65 HRB |
Physical Properties
| Property | Value |
|---|---|
| Density | 8.80 g/cm³ |
| Melting Range | 1300 – 1350 °C |
| Thermal Conductivity | 21.8 W/m·K |
| Electrical Resistivity | 0.54 μΩ·m |
| Modulus of Elasticity | 179 GPa |
ASTM Standards by Product Forms
| Product Form | ASTM Standard |
|---|---|
| Seamless Pipe & Tube | ASTM B165 / B829 |
| Welded Pipe | ASTM B725 |
| Welded Tube | ASTM B725 (Pipe equivalent) |
| Plate & Sheet | ASTM B127 |
| Bar & Rod | ASTM B164 |
| Forgings | ASTM B564 |
| Wire | ASTM B164 |
Corrosion Resistance
- Excellent Resistance to Seawater and Brine
- Outstanding Performance in Hydrofluoric Acid
- Resistant to Sulfuric and Hydrochloric Acids
- Suitable for Caustic Soda and Alkaline Media
- Superior Resistance to Chloride-Containing Environments
- Excellent Durability in Marine Atmospheres
- Reliable Performance in Oil & Gas Applications
Key Applications
- Chemical Processing and Petrochemical Plants
- Marine and Offshore Engineering Systems
- Seawater Handling and Desalination Equipment
- Heat Exchangers, Condensers, and Cooling Systems
- Oil & Gas Production and Refining Facilities
- Hydrofluoric Acid Processing Equipment
- Pumps, Valves, Fasteners, and Shafts
- Power Generation and Nuclear Applications
- Brine Production and Salt Manufacturing Equipment
- Industrial Process Equipment Requiring Superior Corrosion Resistance
Related Monel 400 Products
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