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7178 Aluminum vs. Monel 400

7178 aluminum belongs to the aluminum alloys classification, while Monel 400 belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 Monel 400.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
160
Elongation at Break, % 4.5 to 12
20 to 40
Fatigue Strength, MPa 120 to 210
230 to 290
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 27
62
Shear Strength, MPa 140 to 380
370 to 490
Tensile Strength: Ultimate (UTS), MPa 240 to 640
540 to 780
Tensile Strength: Yield (Proof), MPa 120 to 560
210 to 590

Thermal Properties

Latent Heat of Fusion, J/g 370
270
Maximum Temperature: Mechanical, °C 180
1000
Melting Completion (Liquidus), °C 630
1350
Melting Onset (Solidus), °C 480
1300
Specific Heat Capacity, J/kg-K 860
430
Thermal Conductivity, W/m-K 130
23
Thermal Expansion, µm/m-K 23
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 91
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
50
Density, g/cm3 3.1
8.9
Embodied Carbon, kg CO2/kg material 8.2
7.9
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 1110
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 52
140 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 2220
140 to 1080
Stiffness to Weight: Axial, points 13
10
Stiffness to Weight: Bending, points 45
21
Strength to Weight: Axial, points 21 to 58
17 to 25
Strength to Weight: Bending, points 28 to 54
17 to 21
Thermal Diffusivity, mm2/s 47
6.1
Thermal Shock Resistance, points 10 to 28
17 to 25

Alloy Composition

Aluminum (Al), % 85.4 to 89.5
0
Carbon (C), % 0
0 to 0.3
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.6 to 2.4
28 to 34
Iron (Fe), % 0 to 0.5
0 to 2.5
Magnesium (Mg), % 2.4 to 3.1
0
Manganese (Mn), % 0 to 0.3
0 to 2.0
Nickel (Ni), % 0
63 to 72
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0
0 to 0.024
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 6.3 to 7.3
0
Residuals, % 0 to 0.15
0

Comparable Variants