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Grade C-5 Titanium vs. Nickel 718

Grade C-5 titanium belongs to the titanium alloys classification, while nickel 718 belongs to the nickel alloys. There are 30 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 grade C-5 titanium and the bottom bar is nickel 718.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 6.7
12 to 50
Fatigue Strength, MPa 510
460 to 760
Poisson's Ratio 0.32
0.29
Rockwell C Hardness 34
40
Shear Modulus, GPa 40
75
Tensile Strength: Ultimate (UTS), MPa 1000
930 to 1530
Tensile Strength: Yield (Proof), MPa 940
510 to 1330

Thermal Properties

Latent Heat of Fusion, J/g 410
310
Maximum Temperature: Mechanical, °C 340
980
Melting Completion (Liquidus), °C 1610
1340
Melting Onset (Solidus), °C 1560
1260
Specific Heat Capacity, J/kg-K 560
450
Thermal Conductivity, W/m-K 7.1
11
Thermal Expansion, µm/m-K 9.6
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 36
75
Density, g/cm3 4.4
8.3
Embodied Carbon, kg CO2/kg material 38
13
Embodied Energy, MJ/kg 610
190
Embodied Water, L/kg 200
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
140 to 390
Resilience: Unit (Modulus of Resilience), kJ/m3 4200
660 to 4560
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
23
Strength to Weight: Axial, points 63
31 to 51
Strength to Weight: Bending, points 50
25 to 35
Thermal Diffusivity, mm2/s 2.9
3.0
Thermal Shock Resistance, points 71
27 to 44

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0.2 to 0.8
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0 to 0.1
0 to 0.080
Chromium (Cr), % 0
17 to 21
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0
0 to 0.3
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
11.1 to 24.6
Manganese (Mn), % 0
0 to 0.35
Molybdenum (Mo), % 0
2.8 to 3.3
Nickel (Ni), % 0 to 0.050
50 to 55
Niobium (Nb), % 0
4.8 to 5.5
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.35
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 87.5 to 91
0.65 to 1.2
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0