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Nickel 908 vs. Grade 28 Titanium

Nickel 908 belongs to the nickel alloys classification, while grade 28 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is nickel 908 and the bottom bar is grade 28 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
110
Elongation at Break, % 11
11 to 17
Fatigue Strength, MPa 450
330 to 480
Poisson's Ratio 0.3
0.32
Shear Modulus, GPa 70
40
Shear Strength, MPa 800
420 to 590
Tensile Strength: Ultimate (UTS), MPa 1340
690 to 980
Tensile Strength: Yield (Proof), MPa 930
540 to 810

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 920
330
Melting Completion (Liquidus), °C 1430
1640
Melting Onset (Solidus), °C 1380
1590
Specific Heat Capacity, J/kg-K 460
550
Thermal Conductivity, W/m-K 11
8.3
Thermal Expansion, µm/m-K 8.6
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 50
36
Density, g/cm3 8.3
4.5
Embodied Carbon, kg CO2/kg material 9.3
37
Embodied Energy, MJ/kg 140
600
Embodied Water, L/kg 170
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
87 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 2340
1370 to 3100
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 23
35
Strength to Weight: Axial, points 45
43 to 61
Strength to Weight: Bending, points 33
39 to 49
Thermal Diffusivity, mm2/s 2.9
3.4
Thermal Shock Resistance, points 61
47 to 66

Alloy Composition

Aluminum (Al), % 0.75 to 1.3
2.5 to 3.5
Boron (B), % 0 to 0.012
0
Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 3.8 to 4.5
0
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 35.6 to 44.6
0 to 0.25
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 47 to 51
0
Niobium (Nb), % 2.7 to 3.3
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.015
0
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.0050
0
Titanium (Ti), % 1.2 to 1.8
92.4 to 95.4
Vanadium (V), % 0
2.0 to 3.0
Residuals, % 0
0 to 0.4