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C55181 Copper vs. Grade 21 Titanium

C55181 copper belongs to the copper alloys classification, while grade 21 titanium belongs to the titanium alloys. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is C55181 copper and the bottom bar is grade 21 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
140
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 40
51
Tensile Strength: Ultimate (UTS), MPa 200
890 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 190
410
Maximum Temperature: Mechanical, °C 200
310
Melting Completion (Liquidus), °C 790
1740
Melting Onset (Solidus), °C 710
1690
Specific Heat Capacity, J/kg-K 410
500
Thermal Expansion, µm/m-K 16
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 28
60
Density, g/cm3 8.5
5.4
Embodied Carbon, kg CO2/kg material 2.4
32
Embodied Energy, MJ/kg 38
490
Embodied Water, L/kg 290
180

Common Calculations

Stiffness to Weight: Axial, points 7.0
14
Stiffness to Weight: Bending, points 19
32
Strength to Weight: Axial, points 6.5
46 to 69
Strength to Weight: Bending, points 8.9
38 to 50
Thermal Shock Resistance, points 8.2
66 to 100

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0
0 to 0.050
Copper (Cu), % 92.4 to 93
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0
0 to 0.4
Molybdenum (Mo), % 0
14 to 16
Niobium (Nb), % 0
2.2 to 3.2
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.17
Phosphorus (P), % 7.0 to 7.5
0
Silicon (Si), % 0
0.15 to 0.25
Titanium (Ti), % 0
76 to 81.2
Residuals, % 0
0 to 0.4