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AWS ERNi-1 vs. AWS ERNiCu-7

Both AWS ERNi-1 and AWS ERNiCu-7 are nickel alloys. Both are furnished in the as-welded condition. They have 70% of their average alloy composition in common.

For each property being compared, the top bar is AWS ERNi-1 and the bottom bar is AWS ERNiCu-7.

AWS ERNi-1 (N02061) Weld Metal AWS ERNiCu-7 (N04060) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		180
Elastic (Young's, Tensile) Modulus, GPa		160

Elongation at Break, %		22
Elongation at Break, %		34

Poisson's Ratio		0.31
Poisson's Ratio		0.32

Shear Modulus, GPa		69
Shear Modulus, GPa		61

Tensile Strength: Ultimate (UTS), MPa		470
Tensile Strength: Ultimate (UTS), MPa		550

Thermal Properties

Latent Heat of Fusion, J/g		300
Latent Heat of Fusion, J/g		280

Melting Completion (Liquidus), °C		1360
Melting Completion (Liquidus), °C		1280

Melting Onset (Solidus), °C		1310
Melting Onset (Solidus), °C		1240

Specific Heat Capacity, J/kg-K		450
Specific Heat Capacity, J/kg-K		440

Thermal Conductivity, W/m-K		73
Thermal Conductivity, W/m-K		20

Thermal Expansion, µm/m-K		11
Thermal Expansion, µm/m-K		13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		19
Electrical Conductivity: Equal Volume, % IACS		3.2

Electrical Conductivity: Equal Weight (Specific), % IACS		19
Electrical Conductivity: Equal Weight (Specific), % IACS		3.3

Otherwise Unclassified Properties

Base Metal Price, % relative		60
Base Metal Price, % relative		50

Density, g/cm³		8.7
Density, g/cm³		8.7

Embodied Carbon, kg CO₂/kg material		11
Embodied Carbon, kg CO₂/kg material		8.5

Embodied Energy, MJ/kg		150
Embodied Energy, MJ/kg		120

Embodied Water, L/kg		230
Embodied Water, L/kg		250

Common Calculations

Stiffness to Weight: Axial, points		12
Stiffness to Weight: Axial, points		10

Stiffness to Weight: Bending, points		22
Stiffness to Weight: Bending, points		21

Strength to Weight: Axial, points		15
Strength to Weight: Axial, points		18

Strength to Weight: Bending, points		15
Strength to Weight: Bending, points		17

Thermal Diffusivity, mm²/s		19
Thermal Diffusivity, mm²/s		5.3

Thermal Shock Resistance, points		17
Thermal Shock Resistance, points		19

Alloy Composition

Aluminum (Al), %		0 to 1.5
Aluminum (Al), %		0 to 1.3

Carbon (C), %		0 to 0.15
Carbon (C), %		0 to 0.15

Copper (Cu), %		0 to 0.25
Copper (Cu), %		18.3 to 36.5

Iron (Fe), %		0 to 1.0
Iron (Fe), %		0 to 2.5

Manganese (Mn), %		0 to 1.0
Manganese (Mn), %		0 to 4.0

Nickel (Ni), %		93 to 98
Nickel (Ni), %		62 to 69

Phosphorus (P), %		0 to 0.030
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0 to 0.75
Silicon (Si), %		0 to 1.3

Sulfur (S), %		0 to 0.015
Sulfur (S), %		0 to 0.015

Titanium (Ti), %		2.0 to 3.5
Titanium (Ti), %		1.5 to 3.0

Residuals, %		0
Residuals, %		0 to 0.5