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Nickel 689 vs. Grade 20 Titanium

Nickel 689 belongs to the nickel alloys classification, while grade 20 titanium belongs to the titanium alloys. There are 26 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 nickel 689 and the bottom bar is grade 20 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
120
Elongation at Break, % 23
5.7 to 17
Fatigue Strength, MPa 420
550 to 630
Poisson's Ratio 0.29
0.32
Reduction in Area, % 21
23
Shear Modulus, GPa 80
47
Shear Strength, MPa 790
560 to 740
Tensile Strength: Ultimate (UTS), MPa 1250
900 to 1270
Tensile Strength: Yield (Proof), MPa 690
850 to 1190

Thermal Properties

Latent Heat of Fusion, J/g 330
400
Maximum Temperature: Mechanical, °C 990
370
Melting Completion (Liquidus), °C 1440
1660
Melting Onset (Solidus), °C 1390
1600
Specific Heat Capacity, J/kg-K 450
520
Thermal Expansion, µm/m-K 12
9.6

Otherwise Unclassified Properties

Density, g/cm3 8.5
5.0
Embodied Carbon, kg CO2/kg material 11
52
Embodied Energy, MJ/kg 150
860
Embodied Water, L/kg 330
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
71 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 1170
2940 to 5760
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
33
Strength to Weight: Axial, points 41
50 to 70
Strength to Weight: Bending, points 30
41 to 52
Thermal Shock Resistance, points 35
55 to 77

Alloy Composition

Aluminum (Al), % 0.75 to 1.3
3.0 to 4.0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.1 to 0.2
0 to 0.050
Chromium (Cr), % 18 to 20
5.5 to 6.5
Cobalt (Co), % 9.0 to 11
0
Hydrogen (H), % 0
0 to 0.020
Iron (Fe), % 0 to 5.0
0 to 0.3
Manganese (Mn), % 0 to 0.5
0
Molybdenum (Mo), % 9.0 to 10.5
3.5 to 4.5
Nickel (Ni), % 48.3 to 60.9
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.12
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 2.3 to 2.8
71 to 77
Vanadium (V), % 0
7.5 to 8.5
Zirconium (Zr), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4