Monel R-405 (N04405)
Monel R-405 is a nickel alloy formulated for primary forming into wrought products. N04405 is the UNS number for this material. Monel R-405 is the common industry name. It can have a moderately low tensile strength and has a moderately low embodied energy among wrought nickels.
The properties of Monel R-405 include three common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare Monel R-405 to: wrought nickels (top), all nickel alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
160 GPa 24 x 106 psi
Elongation at Break
9.1 to 39 %
Fatigue Strength
210 to 250 MPa 30 to 37 x 103 psi
Poisson's Ratio
0.32
Shear Modulus
62 GPa 8.9 x 106 psi
Shear Strength
350 to 370 MPa 51 to 54 x 103 psi
Tensile Strength: Ultimate (UTS)
540 to 630 MPa 78 to 91 x 103 psi
Tensile Strength: Yield (Proof)
190 to 350 MPa 28 to 50 x 103 psi
Thermal Properties
Curie Temperature
18 °C 65 °F
Latent Heat of Fusion
270 J/g
Maximum Temperature: Mechanical
900 °C 1650 °F
Melting Completion (Liquidus)
1350 °C 2460 °F
Melting Onset (Solidus)
1300 °C 2370 °F
Specific Heat Capacity
430 J/kg-K 0.1 BTU/lb-°F
Thermal Conductivity
23 W/m-K 13 BTU/h-ft-°F
Thermal Expansion
14 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
3.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
3.4 % IACS
Otherwise Unclassified Properties
Base Metal Price
50 % relative
Density
8.9 g/cm3 550 lb/ft3
Embodied Carbon
7.9 kg CO2/kg material
Embodied Energy
110 MJ/kg 48 x 103 BTU/lb
Embodied Water
250 L/kg 30 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
49 to 170 MJ/m3
Resilience: Unit (Modulus of Resilience)
120 to 370 kJ/m3
Stiffness to Weight: Axial
10 points
Stiffness to Weight: Bending
21 points
Strength to Weight: Axial
17 to 20 points
Strength to Weight: Bending
17 to 18 points
Thermal Diffusivity
5.9 mm2/s
Thermal Shock Resistance
17 to 20 points
Alloy Composition
| Ni | 63 to 72 | |
| Cu | 28 to 34 | |
| Fe | 0 to 2.5 | |
| Mn | 0 to 2.0 | |
| Si | 0 to 0.5 | |
| C | 0 to 0.3 | |
| S | 0.025 to 0.060 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASTM B164: Standard Specification for Nickel-Copper Alloy Rod, Bar, and Wire
Welding Metallurgy and Weldability of Nickel-Base Alloys, John C. Lippold et al., 2009
Metallic Materials: Physical, Mechanical, and Corrosion Properties, Philip A. Schweitzer, 2003
ASM Specialty Handbook: Nickel, Cobalt, and Their Alloys, Joseph R. Davis (editor), 2000
Engineering Properties of Nickel and Nickel Alloys, John L. Everhart, 1971
Nickel Alloys, Ulrich Heubner (editor), 1998