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Grade 7 Titanium vs. Grade C-5 Titanium

Both grade 7 titanium and grade C-5 titanium are titanium alloys. They have 90% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade 7 titanium and the bottom bar is grade C-5 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
310
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 24
6.7
Fatigue Strength, MPa 250
510
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 38
40
Tensile Strength: Ultimate (UTS), MPa 420
1000
Tensile Strength: Yield (Proof), MPa 340
940

Thermal Properties

Latent Heat of Fusion, J/g 420
410
Maximum Temperature: Mechanical, °C 320
340
Melting Completion (Liquidus), °C 1660
1610
Melting Onset (Solidus), °C 1610
1560
Specific Heat Capacity, J/kg-K 540
560
Thermal Conductivity, W/m-K 22
7.1
Thermal Expansion, µm/m-K 9.2
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
2.0

Otherwise Unclassified Properties

Density, g/cm3 4.5
4.4
Embodied Carbon, kg CO2/kg material 47
38
Embodied Energy, MJ/kg 800
610
Embodied Water, L/kg 470
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
66
Resilience: Unit (Modulus of Resilience), kJ/m3 560
4200
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 26
63
Strength to Weight: Bending, points 28
50
Thermal Diffusivity, mm2/s 8.9
2.9
Thermal Shock Resistance, points 31
71

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0 to 0.080
0 to 0.1
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 0 to 0.3
0 to 0.4
Nickel (Ni), % 0
0 to 0.050
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0 to 0.25
Palladium (Pd), % 0.12 to 0.25
0
Titanium (Ti), % 98.7 to 99.88
87.5 to 91
Vanadium (V), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4