AWS ERNiCu-7 (N04060) Weld Metal
AWS ERNiCu-7 is a nickel-based filler metal for welding. Cited properties are appropriate for the as-welded condition. ERNiCu-7 is the AWS designation for this material. N04060 is the UNS number.
It has a fairly low base cost among nickel-based welding fillers. In addition, it has a very low melting temperature and a fairly low tensile strength.
The graph bars on the material properties cards below compare AWS ERNiCu-7 to: nickel-based welding fillers (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 23 x 106 psi
Elongation at Break
34 %
Poisson's Ratio
0.32
Shear Modulus
61 GPa 8.9 x 106 psi
Tensile Strength: Ultimate (UTS)
550 MPa 79 x 103 psi
Thermal Properties
Latent Heat of Fusion
280 J/g
Melting Completion (Liquidus)
1280 °C 2340 °F
Melting Onset (Solidus)
1240 °C 2260 °F
Specific Heat Capacity
440 J/kg-K 0.1 BTU/lb-°F
Thermal Conductivity
20 W/m-K 12 BTU/h-ft-°F
Thermal Expansion
13 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
3.2 % IACS
Electrical Conductivity: Equal Weight (Specific)
3.3 % IACS
Otherwise Unclassified Properties
Base Metal Price
50 % relative
Density
8.7 g/cm3 540 lb/ft3
Embodied Carbon
8.5 kg CO2/kg material
Embodied Energy
120 MJ/kg 52 x 103 BTU/lb
Embodied Water
250 L/kg 30 gal/lb
Common Calculations
Stiffness to Weight: Axial
10 points
Stiffness to Weight: Bending
21 points
Strength to Weight: Axial
18 points
Strength to Weight: Bending
17 points
Thermal Diffusivity
5.3 mm2/s
Thermal Shock Resistance
19 points
Alloy Composition
| Ni | 62 to 69 | |
| Cu | 18.3 to 36.5 | |
| Ti | 1.5 to 3.0 | |
| Mn | 0 to 4.0 | |
| Fe | 0 to 2.5 | |
| Si | 0 to 1.3 | |
| Al | 0 to 1.3 | |
| C | 0 to 0.15 | |
| P | 0 to 0.030 | |
| S | 0 to 0.015 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
AWS A5.14: Specification for Nickel and Nickel-Alloy Bare Welding Electrodes and Rods