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Grade 21 Titanium vs. N06650 Nickel

Grade 21 titanium belongs to the titanium alloys classification, while N06650 nickel belongs to the nickel alloys. There are 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is grade 21 titanium and the bottom bar is N06650 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
210
Elongation at Break, % 9.0 to 17
50
Fatigue Strength, MPa 550 to 660
420
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 51
82
Shear Strength, MPa 550 to 790
640
Tensile Strength: Ultimate (UTS), MPa 890 to 1340
900
Tensile Strength: Yield (Proof), MPa 870 to 1170
460

Thermal Properties

Latent Heat of Fusion, J/g 410
320
Maximum Temperature: Mechanical, °C 310
980
Melting Completion (Liquidus), °C 1740
1500
Melting Onset (Solidus), °C 1690
1450
Specific Heat Capacity, J/kg-K 500
440
Thermal Expansion, µm/m-K 7.1
12

Otherwise Unclassified Properties

Base Metal Price, % relative 60
60
Density, g/cm3 5.4
8.6
Embodied Carbon, kg CO2/kg material 32
10
Embodied Energy, MJ/kg 490
140
Embodied Water, L/kg 180
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 180
380
Resilience: Unit (Modulus of Resilience), kJ/m3 2760 to 5010
490
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 32
23
Strength to Weight: Axial, points 46 to 69
29
Strength to Weight: Bending, points 38 to 50
24
Thermal Shock Resistance, points 66 to 100
24

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0.050 to 0.5
Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0
0 to 0.3
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
12 to 16
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 14 to 16
9.5 to 12.5
Nickel (Ni), % 0
44.4 to 58.9
Niobium (Nb), % 2.2 to 3.2
0.050 to 0.5
Nitrogen (N), % 0 to 0.030
0.050 to 0.2
Oxygen (O), % 0 to 0.17
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0.15 to 0.25
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 76 to 81.2
0
Tungsten (W), % 0
0.5 to 2.5
Residuals, % 0 to 0.4
0