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Grade M30C Nickel vs. 8021 Aluminum

Grade M30C nickel belongs to the nickel alloys classification, while 8021 aluminum belongs to the aluminum 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 grade M30C nickel and the bottom bar is 8021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
70
Elongation at Break, % 29
2.3
Fatigue Strength, MPa 170
61
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 61
26
Tensile Strength: Ultimate (UTS), MPa 510
160
Tensile Strength: Yield (Proof), MPa 250
130

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Maximum Temperature: Mechanical, °C 900
170
Melting Completion (Liquidus), °C 1290
650
Melting Onset (Solidus), °C 1240
640
Specific Heat Capacity, J/kg-K 430
900
Thermal Conductivity, W/m-K 22
220
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
56
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
180

Otherwise Unclassified Properties

Base Metal Price, % relative 60
9.0
Density, g/cm3 8.8
2.8
Embodied Carbon, kg CO2/kg material 9.5
8.1
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 250
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
3.4
Resilience: Unit (Modulus of Resilience), kJ/m3 200
130
Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
49
Strength to Weight: Axial, points 16
16
Strength to Weight: Bending, points 16
23
Thermal Diffusivity, mm2/s 5.7
88
Thermal Shock Resistance, points 18
7.0

Alloy Composition


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Aluminum (Al), % 0
98 to 98.8
Carbon (C), % 0 to 0.3
0
Copper (Cu), % 26 to 33
0 to 0.050
Iron (Fe), % 0 to 3.5
1.2 to 1.7
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 56.6 to 72
0
Niobium (Nb), % 1.0 to 3.0
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.0 to 2.0
0 to 0.15
Sulfur (S), % 0 to 0.030
0
Residuals, % 0
0 to 0.15