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Grade 25 Titanium vs. Nickel 689

Grade 25 titanium belongs to the titanium alloys classification, while nickel 689 belongs to the nickel alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is grade 25 titanium and the bottom bar is nickel 689.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 11
23
Fatigue Strength, MPa 550
420
Poisson's Ratio 0.32
0.29
Reduction in Area, % 29
21
Shear Modulus, GPa 40
80
Shear Strength, MPa 600
790
Tensile Strength: Ultimate (UTS), MPa 1000
1250
Tensile Strength: Yield (Proof), MPa 940
690

Thermal Properties

Latent Heat of Fusion, J/g 410
330
Maximum Temperature: Mechanical, °C 340
990
Melting Completion (Liquidus), °C 1610
1440
Melting Onset (Solidus), °C 1560
1390
Specific Heat Capacity, J/kg-K 560
450
Thermal Expansion, µm/m-K 9.6
12

Otherwise Unclassified Properties

Density, g/cm3 4.5
8.5
Embodied Carbon, kg CO2/kg material 43
11
Embodied Energy, MJ/kg 700
150
Embodied Water, L/kg 320
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
240
Resilience: Unit (Modulus of Resilience), kJ/m3 4220
1170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
23
Strength to Weight: Axial, points 62
41
Strength to Weight: Bending, points 50
30
Thermal Shock Resistance, points 71
35

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0.75 to 1.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.080
0.1 to 0.2
Chromium (Cr), % 0
18 to 20
Cobalt (Co), % 0
9.0 to 11
Hydrogen (H), % 0 to 0.013
0
Iron (Fe), % 0 to 0.4
0 to 5.0
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 0.3 to 0.8
48.3 to 60.9
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 0.015
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 86.7 to 90.6
2.3 to 2.8
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0