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EN AC-42100 Aluminum vs. Nickel 685

EN AC-42100 aluminum belongs to the aluminum alloys classification, while nickel 685 belongs to the nickel alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 EN AC-42100 aluminum and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 91
350
Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 3.4 to 9.0
17
Fatigue Strength, MPa 76 to 82
470
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 280 to 290
1250
Tensile Strength: Yield (Proof), MPa 210 to 230
850

Thermal Properties

Latent Heat of Fusion, J/g 500
320
Maximum Temperature: Mechanical, °C 170
1000
Melting Completion (Liquidus), °C 610
1380
Melting Onset (Solidus), °C 600
1330
Specific Heat Capacity, J/kg-K 910
460
Thermal Conductivity, W/m-K 150
13
Thermal Expansion, µm/m-K 22
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
75
Density, g/cm3 2.6
8.4
Embodied Carbon, kg CO2/kg material 8.0
10
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 1110
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.1 to 23
190
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 370
1820
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
23
Strength to Weight: Axial, points 30 to 31
42
Strength to Weight: Bending, points 37 to 38
31
Thermal Diffusivity, mm2/s 66
3.3
Thermal Shock Resistance, points 13
37

Alloy Composition

Aluminum (Al), % 91.3 to 93.3
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0
0.030 to 0.1
Chromium (Cr), % 0
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0 to 0.050
0 to 0.5
Iron (Fe), % 0 to 0.19
0 to 2.0
Magnesium (Mg), % 0.25 to 0.45
0
Manganese (Mn), % 0 to 0.1
0 to 1.0
Molybdenum (Mo), % 0
3.5 to 5.0
Nickel (Ni), % 0
49.6 to 62.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 6.5 to 7.5
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
2.8 to 3.3
Zinc (Zn), % 0 to 0.070
0.020 to 0.12
Residuals, % 0 to 0.1
0