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Grade 21 Titanium vs. C70250 Copper

Grade 21 titanium belongs to the titanium alloys classification, while C70250 copper belongs to the copper alloys. There are 22 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 grade 21 titanium and the bottom bar is C70250 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
120
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 51
44
Tensile Strength: Ultimate (UTS), MPa 890 to 1340
520 to 740

Thermal Properties

Latent Heat of Fusion, J/g 410
220
Maximum Temperature: Mechanical, °C 310
210
Melting Completion (Liquidus), °C 1740
1100
Melting Onset (Solidus), °C 1690
1080
Specific Heat Capacity, J/kg-K 500
390
Thermal Conductivity, W/m-K 7.5
170
Thermal Expansion, µm/m-K 7.1
17

Otherwise Unclassified Properties

Base Metal Price, % relative 60
31
Density, g/cm3 5.4
8.9
Embodied Carbon, kg CO2/kg material 32
2.9
Embodied Energy, MJ/kg 490
45
Embodied Water, L/kg 180
310

Common Calculations

Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 32
18
Strength to Weight: Axial, points 46 to 69
16 to 23
Strength to Weight: Bending, points 38 to 50
16 to 21
Thermal Diffusivity, mm2/s 2.8
49
Thermal Shock Resistance, points 66 to 100
18 to 26

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.050
0
Copper (Cu), % 0
92.7 to 97.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
0
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0
0.050 to 0.3
Manganese (Mn), % 0
0 to 0.1
Molybdenum (Mo), % 14 to 16
0
Nickel (Ni), % 0
2.2 to 4.2
Niobium (Nb), % 2.2 to 3.2
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.17
0
Silicon (Si), % 0.15 to 0.25
0.25 to 1.2
Titanium (Ti), % 76 to 81.2
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5

Comparable Variants