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7204 Aluminum vs. Nickel 690

7204 aluminum belongs to the aluminum alloys classification, while nickel 690 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 7204 aluminum and the bottom bar is nickel 690.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 11 to 13
3.4 to 34
Fatigue Strength, MPa 110 to 130
180 to 300
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
79
Shear Strength, MPa 130 to 220
420 to 570
Tensile Strength: Ultimate (UTS), MPa 220 to 380
640 to 990
Tensile Strength: Yield (Proof), MPa 120 to 310
250 to 760

Thermal Properties

Latent Heat of Fusion, J/g 380
320
Maximum Temperature: Mechanical, °C 210
1010
Melting Completion (Liquidus), °C 640
1380
Melting Onset (Solidus), °C 520
1340
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 150
14
Thermal Expansion, µm/m-K 24
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 120
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
50
Density, g/cm3 2.9
8.3
Embodied Carbon, kg CO2/kg material 8.4
8.2
Embodied Energy, MJ/kg 150
120
Embodied Water, L/kg 1140
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25 to 40
31 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 710
160 to 1440
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 21 to 36
21 to 33
Strength to Weight: Bending, points 28 to 40
20 to 27
Thermal Diffusivity, mm2/s 58
3.5
Thermal Shock Resistance, points 9.4 to 16
16 to 25

Alloy Composition

Aluminum (Al), % 90.5 to 94.8
0
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0 to 0.3
27 to 31
Copper (Cu), % 0 to 0.2
0 to 0.5
Iron (Fe), % 0 to 0.35
7.0 to 11
Magnesium (Mg), % 1.0 to 2.0
0
Manganese (Mn), % 0.2 to 0.7
0 to 0.5
Nickel (Ni), % 0
58 to 66
Silicon (Si), % 0 to 0.3
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0 to 0.1
0
Zinc (Zn), % 4.0 to 5.0
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0

Comparable Variants