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Nickel 689 vs. Grade 38 Titanium

Nickel 689 belongs to the nickel alloys classification, while grade 38 titanium belongs to the titanium alloys. There are 27 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 nickel 689 and the bottom bar is grade 38 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 23
11
Fatigue Strength, MPa 420
530
Poisson's Ratio 0.29
0.32
Reduction in Area, % 21
29
Shear Modulus, GPa 80
40
Shear Strength, MPa 790
600
Tensile Strength: Ultimate (UTS), MPa 1250
1000
Tensile Strength: Yield (Proof), MPa 690
910

Thermal Properties

Latent Heat of Fusion, J/g 330
410
Maximum Temperature: Mechanical, °C 990
330
Melting Completion (Liquidus), °C 1440
1620
Melting Onset (Solidus), °C 1390
1570
Specific Heat Capacity, J/kg-K 450
550
Thermal Expansion, µm/m-K 12
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 70
36
Density, g/cm3 8.5
4.5
Embodied Carbon, kg CO2/kg material 11
35
Embodied Energy, MJ/kg 150
560
Embodied Water, L/kg 330
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1170
3840
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
35
Strength to Weight: Axial, points 41
62
Strength to Weight: Bending, points 30
49
Thermal Shock Resistance, points 35
72

Alloy Composition

Aluminum (Al), % 0.75 to 1.3
3.5 to 4.5
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.1 to 0.2
0 to 0.080
Chromium (Cr), % 18 to 20
0
Cobalt (Co), % 9.0 to 11
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 5.0
1.2 to 1.8
Manganese (Mn), % 0 to 0.5
0
Molybdenum (Mo), % 9.0 to 10.5
0
Nickel (Ni), % 48.3 to 60.9
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0.2 to 0.3
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
89.9 to 93.1
Vanadium (V), % 0
2.0 to 3.0
Residuals, % 0
0 to 0.4