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CR021A Copper vs. AWS ERTi-5

CR021A copper belongs to the copper alloys classification, while AWS ERTi-5 belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is CR021A copper and the bottom bar is AWS ERTi-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 15
10
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 43
40
Tensile Strength: Ultimate (UTS), MPa 230
900
Tensile Strength: Yield (Proof), MPa 140
830

Thermal Properties

Latent Heat of Fusion, J/g 210
410
Maximum Temperature: Mechanical, °C 200
340
Melting Completion (Liquidus), °C 1090
1610
Melting Onset (Solidus), °C 1040
1560
Specific Heat Capacity, J/kg-K 390
560
Thermal Conductivity, W/m-K 380
7.1
Thermal Expansion, µm/m-K 17
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 99
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 31
36
Density, g/cm3 9.0
4.4
Embodied Carbon, kg CO2/kg material 2.6
38
Embodied Energy, MJ/kg 41
610
Embodied Water, L/kg 320
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
87
Resilience: Unit (Modulus of Resilience), kJ/m3 83
3250
Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 18
35
Strength to Weight: Axial, points 7.1
56
Strength to Weight: Bending, points 9.3
46
Thermal Diffusivity, mm2/s 110
2.9
Thermal Shock Resistance, points 8.1
63

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Bismuth (Bi), % 0 to 0.00050
0
Carbon (C), % 0
0 to 0.050
Copper (Cu), % 99.95 to 99.998
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0
0 to 0.22
Lead (Pb), % 0 to 0.0050
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0.12 to 0.2
Phosphorus (P), % 0.0020 to 0.0070
0
Silver (Ag), % 0 to 0.015
0
Titanium (Ti), % 0
88.2 to 90.9
Vanadium (V), % 0
3.5 to 4.5