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C12900 Copper vs. Grade 21 Titanium

C12900 copper belongs to the copper alloys classification, while grade 21 titanium belongs to the titanium alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C12900 copper and the bottom bar is grade 21 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
140
Elongation at Break, % 2.8 to 50
9.0 to 17
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 43
51
Shear Strength, MPa 150 to 210
550 to 790
Tensile Strength: Ultimate (UTS), MPa 220 to 420
890 to 1340
Tensile Strength: Yield (Proof), MPa 75 to 380
870 to 1170

Thermal Properties

Latent Heat of Fusion, J/g 210
410
Maximum Temperature: Mechanical, °C 200
310
Melting Completion (Liquidus), °C 1080
1740
Melting Onset (Solidus), °C 1030
1690
Specific Heat Capacity, J/kg-K 390
500
Thermal Conductivity, W/m-K 380
7.5
Thermal Expansion, µm/m-K 17
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 32
60
Density, g/cm3 9.0
5.4
Embodied Carbon, kg CO2/kg material 2.6
32
Embodied Energy, MJ/kg 41
490
Embodied Water, L/kg 330
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11 to 88
110 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 24 to 640
2760 to 5010
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
32
Strength to Weight: Axial, points 6.8 to 13
46 to 69
Strength to Weight: Bending, points 9.1 to 14
38 to 50
Thermal Diffusivity, mm2/s 110
2.8
Thermal Shock Resistance, points 7.8 to 15
66 to 100

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Antimony (Sb), % 0 to 0.0030
0
Arsenic (As), % 0 to 0.012
0
Bismuth (Bi), % 0 to 0.0030
0
Carbon (C), % 0
0 to 0.050
Copper (Cu), % 99.88 to 100
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0
0 to 0.4
Lead (Pb), % 0 to 0.0040
0
Molybdenum (Mo), % 0
14 to 16
Nickel (Ni), % 0 to 0.050
0
Niobium (Nb), % 0
2.2 to 3.2
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.17
Silicon (Si), % 0
0.15 to 0.25
Silver (Ag), % 0 to 0.054
0
Tellurium (Te), % 0 to 0.025
0
Titanium (Ti), % 0
76 to 81.2
Residuals, % 0
0 to 0.4

Comparable Variants