Monel R405 Round Bar (UNS N04405 / W.Nr. 2.4365)
Monel R405 Round Bar is a free-machining nickel–copper alloy containing controlled sulfur additions, developed to provide the excellent corrosion resistance of Monel 400 with improved machinability. It offers outstanding resistance to seawater, hydrofluoric acid, alkalis, and neutral salts, making it suitable for precision-machined components in marine, chemical, and oil & gas applications.
Key Features
- Excellent machinability due to sulfur addition
- Outstanding resistance to seawater and marine atmospheres
- Good resistance to hydrofluoric and sulfuric acids
- High strength and toughness over a wide temperature range
- Low corrosion rate in neutral and alkaline environments
- Non-magnetic in the annealed condition
Equivalent Grades
| Standard | Equivalent |
|---|---|
| UNS | N04405 |
| DIN / EN | 2.4365 |
| ASTM | Monel R-405 |
Sizes
- Diameter: 6 mm to 300 mm
- Length: Random, Cut Length, or as per customer requirement
Monel R405 Chemical Composition
| Element | Percentage (%) |
|---|---|
| Nickel (Ni) | 63.0 – 70.0 |
| Copper (Cu) | Balance |
| Sulfur (S) | 0.025 – 0.060 |
| Iron (Fe) | ≤ 2.0 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 0.5 |
| Carbon (C) | ≤ 0.30 |
UNS N04405 Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 480 MPa |
| Yield Strength (0.2%) | ≥ 170 MPa |
| Elongation | ≥ 35% |
| Hardness | ≤ 80 HRB |
Alloy R405 Physical Properties
| Property | Value |
|---|---|
| Density | 8.8 g/cm³ |
| Melting Range | 1300 – 1350 °C |
| Modulus of Elasticity | 179 GPa |
| Thermal Conductivity | 22 W/m·K |
Types of Monel R-405 Round Bar
- Hot Rolled Monel Bar
- Cold Drawn Monel Bar
- Annealed Monel Bar
- Precision Machined Bar
Applications
- Precision machined parts
- Marine engineering components
- Oil & gas valve and pump parts
- Chemical processing equipment
- Fasteners, shafts, and fittings
- Instrumentation components
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