C72200 Copper-nickel vs. AWS E33-31

C72200 copper-nickel belongs to the copper alloys classification, while AWS E33-31 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 C72200 copper-nickel and the bottom bar is AWS E33-31.

UNS C72200 Chromium-Bearing Copper-Nickel AWS E33-31 (W33310) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		130
Elastic (Young's, Tensile) Modulus, GPa		210

Poisson's Ratio		0.33
Poisson's Ratio		0.27

Shear Modulus, GPa		48
Shear Modulus, GPa		81

Tensile Strength: Ultimate (UTS), MPa		350 to 580
Tensile Strength: Ultimate (UTS), MPa		810

Thermal Properties

Latent Heat of Fusion, J/g		220
Latent Heat of Fusion, J/g		320

Melting Completion (Liquidus), °C		1180
Melting Completion (Liquidus), °C		1380

Melting Onset (Solidus), °C		1120
Melting Onset (Solidus), °C		1330

Specific Heat Capacity, J/kg-K		400
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		16
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Base Metal Price, % relative		36
Base Metal Price, % relative		36

Density, g/cm³		8.9
Density, g/cm³		7.9

Embodied Carbon, kg CO₂/kg material		3.9
Embodied Carbon, kg CO₂/kg material		6.0

Embodied Energy, MJ/kg		59
Embodied Energy, MJ/kg		86

Embodied Water, L/kg		300
Embodied Water, L/kg		260

Common Calculations

Stiffness to Weight: Axial, points		8.0
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		19
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		11 to 18
Strength to Weight: Axial, points		28

Strength to Weight: Bending, points		12 to 17
Strength to Weight: Bending, points		24

Thermal Shock Resistance, points		12 to 20
Thermal Shock Resistance, points		19

Alloy Composition

Carbon (C), %		0
Carbon (C), %		0 to 0.030

Chromium (Cr), %		0.3 to 0.7
Chromium (Cr), %		31 to 35

Copper (Cu), %		78.1 to 84.2
Copper (Cu), %		0.4 to 0.8

Iron (Fe), %		0.5 to 1.0
Iron (Fe), %		24.7 to 34.8

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

Manganese (Mn), %		0 to 1.0
Manganese (Mn), %		2.5 to 4.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		1.0 to 2.0

Nickel (Ni), %		15 to 18
Nickel (Ni), %		30 to 32

Nitrogen (N), %		0
Nitrogen (N), %		0.3 to 0.5

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.020

Silicon (Si), %		0
Silicon (Si), %		0 to 0.9

Sulfur (S), %		0
Sulfur (S), %		0 to 0.010

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

Residuals, %		0 to 0.2
Residuals, %		0