C72500 Copper-nickel vs. AWS E33-31

C72500 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 C72500 copper-nickel and the bottom bar is AWS E33-31.

UNS C72500 (CW351H) Tin-Bearing Copper-Nickel AWS E33-31 (W33310) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		120
Elastic (Young's, Tensile) Modulus, GPa		210

Poisson's Ratio		0.34
Poisson's Ratio		0.27

Shear Modulus, GPa		45
Shear Modulus, GPa		81

Tensile Strength: Ultimate (UTS), MPa		420 to 780
Tensile Strength: Ultimate (UTS), MPa		810

Thermal Properties

Latent Heat of Fusion, J/g		210
Latent Heat of Fusion, J/g		320

Melting Completion (Liquidus), °C		1130
Melting Completion (Liquidus), °C		1380

Melting Onset (Solidus), °C		1060
Melting Onset (Solidus), °C		1330

Specific Heat Capacity, J/kg-K		390
Specific Heat Capacity, J/kg-K		480

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

Otherwise Unclassified Properties

Base Metal Price, % relative		35
Base Metal Price, % relative		36

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

Embodied Carbon, kg CO₂/kg material		3.6
Embodied Carbon, kg CO₂/kg material		6.0

Embodied Energy, MJ/kg		55
Embodied Energy, MJ/kg		86

Embodied Water, L/kg		320
Embodied Water, L/kg		260

Common Calculations

Stiffness to Weight: Axial, points		7.6
Stiffness to Weight: Axial, points		14

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

Strength to Weight: Axial, points		13 to 24
Strength to Weight: Axial, points		28

Strength to Weight: Bending, points		14 to 21
Strength to Weight: Bending, points		24

Thermal Shock Resistance, points		14 to 27
Thermal Shock Resistance, points		19

Alloy Composition

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

Chromium (Cr), %		0
Chromium (Cr), %		31 to 35

Copper (Cu), %		85.2 to 89.7
Copper (Cu), %		0.4 to 0.8

Iron (Fe), %		0 to 0.6
Iron (Fe), %		24.7 to 34.8

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

Manganese (Mn), %		0 to 0.2
Manganese (Mn), %		2.5 to 4.0

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

Nickel (Ni), %		8.5 to 10.5
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

Tin (Sn), %		1.8 to 2.8
Tin (Sn), %		0

Zinc (Zn), %		0 to 0.5
Zinc (Zn), %		0

Residuals, %		0 to 0.2
Residuals, %		0