C72150 Copper-nickel vs. AWS E320

C72150 copper-nickel belongs to the copper alloys classification, while AWS E320 belongs to the iron alloys. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is C72150 copper-nickel and the bottom bar is AWS E320.

UNS C72150 (CuNi44) Copper-Nickel AWS E320 (W88021) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		150
Elastic (Young's, Tensile) Modulus, GPa		200

Elongation at Break, %		29
Elongation at Break, %		34

Poisson's Ratio		0.33
Poisson's Ratio		0.28

Shear Modulus, GPa		55
Shear Modulus, GPa		77

Tensile Strength: Ultimate (UTS), MPa		490
Tensile Strength: Ultimate (UTS), MPa		620

Thermal Properties

Latent Heat of Fusion, J/g		250
Latent Heat of Fusion, J/g		300

Melting Completion (Liquidus), °C		1210
Melting Completion (Liquidus), °C		1410

Melting Onset (Solidus), °C		1250
Melting Onset (Solidus), °C		1360

Specific Heat Capacity, J/kg-K		410
Specific Heat Capacity, J/kg-K		460

Thermal Expansion, µm/m-K		14
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Base Metal Price, % relative		45
Base Metal Price, % relative		38

Density, g/cm³		8.9
Density, g/cm³		8.2

Embodied Carbon, kg CO₂/kg material		6.1
Embodied Carbon, kg CO₂/kg material		6.5

Embodied Energy, MJ/kg		88
Embodied Energy, MJ/kg		91

Embodied Water, L/kg		270
Embodied Water, L/kg		220

Common Calculations

Stiffness to Weight: Axial, points		9.1
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		20
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		15
Strength to Weight: Axial, points		21

Strength to Weight: Bending, points		15
Strength to Weight: Bending, points		20

Thermal Shock Resistance, points		18
Thermal Shock Resistance, points		16

Alloy Composition

Carbon (C), %		0 to 0.1
Carbon (C), %		0 to 0.070

Chromium (Cr), %		0
Chromium (Cr), %		19 to 21

Copper (Cu), %		52.5 to 57
Copper (Cu), %		3.0 to 4.0

Iron (Fe), %		0 to 0.1
Iron (Fe), %		31.8 to 43.5

Lead (Pb), %		0 to 0.050
Lead (Pb), %		0

Manganese (Mn), %		0 to 0.050
Manganese (Mn), %		0.5 to 2.5

Molybdenum (Mo), %		0
Molybdenum (Mo), %		2.0 to 3.0

Nickel (Ni), %		43 to 46
Nickel (Ni), %		32 to 36

Niobium (Nb), %		0
Niobium (Nb), %		0 to 1.0

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.040

Silicon (Si), %		0 to 0.5
Silicon (Si), %		0 to 0.6

Sulfur (S), %		0
Sulfur (S), %		0 to 0.030

Zinc (Zn), %		0 to 0.2
Zinc (Zn), %		0

Residuals, %		0 to 0.5
Residuals, %		0