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Grade 9 Titanium vs. Grade N7M Nickel

Grade 9 titanium belongs to the titanium alloys classification, while grade N7M nickel belongs to the nickel alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is grade 9 titanium and the bottom bar is grade N7M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 11 to 17
22
Fatigue Strength, MPa 330 to 480
190
Poisson's Ratio 0.32
0.31
Shear Modulus, GPa 40
85
Tensile Strength: Ultimate (UTS), MPa 700 to 960
590
Tensile Strength: Yield (Proof), MPa 540 to 830
310

Thermal Properties

Latent Heat of Fusion, J/g 410
320
Maximum Temperature: Mechanical, °C 330
900
Melting Completion (Liquidus), °C 1640
1650
Melting Onset (Solidus), °C 1590
1590
Specific Heat Capacity, J/kg-K 550
390
Thermal Expansion, µm/m-K 9.1
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 37
75
Density, g/cm3 4.5
9.3
Embodied Carbon, kg CO2/kg material 36
16
Embodied Energy, MJ/kg 580
200
Embodied Water, L/kg 150
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1380 to 3220
220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
22
Strength to Weight: Axial, points 43 to 60
18
Strength to Weight: Bending, points 39 to 48
17
Thermal Shock Resistance, points 52 to 71
19

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.080
0 to 0.070
Chromium (Cr), % 0
0 to 1.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
0 to 3.0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
30 to 33
Nickel (Ni), % 0
60.9 to 70
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.15
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 92.6 to 95.5
0
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0