AWS E312 vs. C71640 Copper-nickel

AWS E312 belongs to the iron alloys classification, while C71640 copper-nickel belongs to the copper 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 AWS E312 and the bottom bar is C71640 copper-nickel.

AWS E312 (W31310) Weld Metal UNS C71640 Copper-Nickel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		200
Elastic (Young's, Tensile) Modulus, GPa		140

Poisson's Ratio		0.27
Poisson's Ratio		0.33

Shear Modulus, GPa		80
Shear Modulus, GPa		52

Tensile Strength: Ultimate (UTS), MPa		740
Tensile Strength: Ultimate (UTS), MPa		490 to 630

Thermal Properties

Latent Heat of Fusion, J/g		310
Latent Heat of Fusion, J/g		240

Melting Completion (Liquidus), °C		1410
Melting Completion (Liquidus), °C		1180

Melting Onset (Solidus), °C		1360
Melting Onset (Solidus), °C		1120

Specific Heat Capacity, J/kg-K		480
Specific Heat Capacity, J/kg-K		410

Thermal Expansion, µm/m-K		15
Thermal Expansion, µm/m-K		15

Otherwise Unclassified Properties

Base Metal Price, % relative		20
Base Metal Price, % relative		40

Density, g/cm³		7.7
Density, g/cm³		8.9

Embodied Carbon, kg CO₂/kg material		3.6
Embodied Carbon, kg CO₂/kg material		5.0

Embodied Energy, MJ/kg		52
Embodied Energy, MJ/kg		73

Embodied Water, L/kg		200
Embodied Water, L/kg		280

Common Calculations

Stiffness to Weight: Axial, points		15
Stiffness to Weight: Axial, points		8.7

Stiffness to Weight: Bending, points		25
Stiffness to Weight: Bending, points		20

Strength to Weight: Axial, points		27
Strength to Weight: Axial, points		15 to 20

Strength to Weight: Bending, points		24
Strength to Weight: Bending, points		16 to 18

Thermal Shock Resistance, points		18
Thermal Shock Resistance, points		16 to 21

Alloy Composition

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

Chromium (Cr), %		28 to 32
Chromium (Cr), %		0

Copper (Cu), %		0 to 0.75
Copper (Cu), %		61.7 to 67.8

Iron (Fe), %		52.3 to 63.5
Iron (Fe), %		1.7 to 2.3

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

Manganese (Mn), %		0.5 to 2.5
Manganese (Mn), %		1.5 to 2.5

Molybdenum (Mo), %		0 to 0.75
Molybdenum (Mo), %		0

Nickel (Ni), %		8.0 to 10.5
Nickel (Ni), %		29 to 32

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

Silicon (Si), %		0 to 1.0
Silicon (Si), %		0

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

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

Residuals, %		0
Residuals, %		0 to 0.5