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7178 Aluminum vs. Nickel 201

7178 aluminum belongs to the aluminum alloys classification, while nickel 201 belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, 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 7178 aluminum and the bottom bar is nickel 201.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
180
Elongation at Break, % 4.5 to 12
4.5 to 45
Fatigue Strength, MPa 120 to 210
42 to 210
Poisson's Ratio 0.32
0.31
Shear Modulus, GPa 27
70
Shear Strength, MPa 140 to 380
270 to 380
Tensile Strength: Ultimate (UTS), MPa 240 to 640
390 to 660
Tensile Strength: Yield (Proof), MPa 120 to 560
80 to 510

Thermal Properties

Latent Heat of Fusion, J/g 370
290
Maximum Temperature: Mechanical, °C 180
900
Melting Completion (Liquidus), °C 630
1450
Melting Onset (Solidus), °C 480
1440
Specific Heat Capacity, J/kg-K 860
440
Thermal Conductivity, W/m-K 130
78
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
19
Electrical Conductivity: Equal Weight (Specific), % IACS 91
19

Otherwise Unclassified Properties

Base Metal Price, % relative 10
65
Density, g/cm3 3.1
8.9
Embodied Carbon, kg CO2/kg material 8.2
11
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1110
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 52
25 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 2220
17 to 720
Stiffness to Weight: Axial, points 13
11
Stiffness to Weight: Bending, points 45
21
Strength to Weight: Axial, points 21 to 58
12 to 20
Strength to Weight: Bending, points 28 to 54
13 to 19
Thermal Diffusivity, mm2/s 47
20
Thermal Shock Resistance, points 10 to 28
11 to 19

Alloy Composition

Aluminum (Al), % 85.4 to 89.5
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.6 to 2.4
0 to 0.25
Iron (Fe), % 0 to 0.5
0 to 0.4
Magnesium (Mg), % 2.4 to 3.1
0
Manganese (Mn), % 0 to 0.3
0 to 0.35
Nickel (Ni), % 0
99 to 100
Silicon (Si), % 0 to 0.4
0 to 0.35
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 6.3 to 7.3
0
Residuals, % 0 to 0.15
0

Comparable Variants