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7178 Aluminum vs. N10003 Nickel

7178 aluminum belongs to the aluminum alloys classification, while N10003 nickel belongs to the nickel alloys. 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 7178 aluminum and the bottom bar is N10003 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
210
Elongation at Break, % 4.5 to 12
42
Fatigue Strength, MPa 120 to 210
260
Poisson's Ratio 0.32
0.3
Shear Modulus, GPa 27
80
Shear Strength, MPa 140 to 380
540
Tensile Strength: Ultimate (UTS), MPa 240 to 640
780
Tensile Strength: Yield (Proof), MPa 120 to 560
320

Thermal Properties

Latent Heat of Fusion, J/g 370
320
Maximum Temperature: Mechanical, °C 180
930
Melting Completion (Liquidus), °C 630
1520
Melting Onset (Solidus), °C 480
1460
Specific Heat Capacity, J/kg-K 860
420
Thermal Conductivity, W/m-K 130
12
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 91
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
70
Density, g/cm3 3.1
8.9
Embodied Carbon, kg CO2/kg material 8.2
13
Embodied Energy, MJ/kg 150
180
Embodied Water, L/kg 1110
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 52
260
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 2220
240
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
22
Strength to Weight: Axial, points 21 to 58
24
Strength to Weight: Bending, points 28 to 54
21
Thermal Diffusivity, mm2/s 47
3.1
Thermal Shock Resistance, points 10 to 28
21

Alloy Composition

Aluminum (Al), % 85.4 to 89.5
0 to 0.5
Boron (B), % 0
0 to 0.010
Carbon (C), % 0
0.040 to 0.080
Chromium (Cr), % 0.18 to 0.28
6.0 to 8.0
Cobalt (Co), % 0
0 to 0.2
Copper (Cu), % 1.6 to 2.4
0 to 0.35
Iron (Fe), % 0 to 0.5
0 to 5.0
Magnesium (Mg), % 2.4 to 3.1
0
Manganese (Mn), % 0 to 0.3
0 to 1.0
Molybdenum (Mo), % 0
15 to 18
Nickel (Ni), % 0
64.8 to 79
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.2
0
Tungsten (W), % 0
0 to 0.5
Vanadium (V), % 0
0 to 0.5
Zinc (Zn), % 6.3 to 7.3
0
Residuals, % 0 to 0.15
0