C70400 Copper-nickel vs. AWS E320

C70400 copper-nickel belongs to the copper alloys classification, while AWS E320 belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is C70400 copper-nickel and the bottom bar is AWS E320.

UNS C70400 Copper-Nickel AWS E320 (W88021) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		120
Elastic (Young's, Tensile) Modulus, GPa		200

Poisson's Ratio		0.34
Poisson's Ratio		0.28

Shear Modulus, GPa		45
Shear Modulus, GPa		77

Tensile Strength: Ultimate (UTS), MPa		300 to 310
Tensile Strength: Ultimate (UTS), MPa		620

Thermal Properties

Latent Heat of Fusion, J/g		210
Latent Heat of Fusion, J/g		300

Melting Completion (Liquidus), °C		1120
Melting Completion (Liquidus), °C		1410

Melting Onset (Solidus), °C		1060
Melting Onset (Solidus), °C		1360

Specific Heat Capacity, J/kg-K		390
Specific Heat Capacity, J/kg-K		460

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Base Metal Price, % relative		32
Base Metal Price, % relative		38

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

Embodied Carbon, kg CO₂/kg material		3.0
Embodied Carbon, kg CO₂/kg material		6.5

Embodied Energy, MJ/kg		47
Embodied Energy, MJ/kg		91

Embodied Water, L/kg		300
Embodied Water, L/kg		220

Common Calculations

Stiffness to Weight: Axial, points		7.5
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		19
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		9.3 to 9.8
Strength to Weight: Axial, points		21

Strength to Weight: Bending, points		11 to 12
Strength to Weight: Bending, points		20

Thermal Shock Resistance, points		10 to 11
Thermal Shock Resistance, points		16

Alloy Composition

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

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

Copper (Cu), %		89.8 to 93.6
Copper (Cu), %		3.0 to 4.0

Iron (Fe), %		1.3 to 1.7
Iron (Fe), %		31.8 to 43.5

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

Manganese (Mn), %		0.3 to 0.8
Manganese (Mn), %		0.5 to 2.5

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

Nickel (Ni), %		4.8 to 6.2
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
Silicon (Si), %		0 to 0.6

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

Zinc (Zn), %		0 to 1.0
Zinc (Zn), %		0

Residuals, %		0 to 0.5
Residuals, %		0