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Grade 25 Titanium vs. Nickel 686

Grade 25 titanium belongs to the titanium alloys classification, while nickel 686 belongs to the nickel alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 25 titanium and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 11
51
Fatigue Strength, MPa 550
410
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
77
Shear Strength, MPa 600
560
Tensile Strength: Ultimate (UTS), MPa 1000
780
Tensile Strength: Yield (Proof), MPa 940
350

Thermal Properties

Latent Heat of Fusion, J/g 410
320
Maximum Temperature: Mechanical, °C 340
980
Melting Completion (Liquidus), °C 1610
1380
Melting Onset (Solidus), °C 1560
1340
Specific Heat Capacity, J/kg-K 560
420
Thermal Conductivity, W/m-K 7.1
9.8
Thermal Expansion, µm/m-K 9.6
12

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 4.5
9.0
Embodied Carbon, kg CO2/kg material 43
12
Embodied Energy, MJ/kg 700
170
Embodied Water, L/kg 320
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
320
Resilience: Unit (Modulus of Resilience), kJ/m3 4220
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
22
Strength to Weight: Axial, points 62
24
Strength to Weight: Bending, points 50
21
Thermal Diffusivity, mm2/s 2.8
2.6
Thermal Shock Resistance, points 71
21

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
0 to 0.010
Chromium (Cr), % 0
19 to 23
Hydrogen (H), % 0 to 0.013
0
Iron (Fe), % 0 to 0.4
0 to 5.0
Manganese (Mn), % 0
0 to 0.75
Molybdenum (Mo), % 0
15 to 17
Nickel (Ni), % 0.3 to 0.8
49.5 to 63
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.2
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.080
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 86.7 to 90.6
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0