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2618 Aluminum vs. EN 1.4877 Stainless Steel

2618 aluminum belongs to the aluminum alloys classification, while EN 1.4877 stainless steel belongs to the iron alloys. There are 31 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 2618 aluminum and the bottom bar is EN 1.4877 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
190
Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 5.8
36
Fatigue Strength, MPa 110
170
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
79
Shear Strength, MPa 260
420
Tensile Strength: Ultimate (UTS), MPa 420
630
Tensile Strength: Yield (Proof), MPa 350
200

Thermal Properties

Latent Heat of Fusion, J/g 390
310
Maximum Temperature: Mechanical, °C 210
1150
Melting Completion (Liquidus), °C 640
1400
Melting Onset (Solidus), °C 550
1360
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 160
12
Thermal Expansion, µm/m-K 22
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 11
37
Density, g/cm3 2.9
8.0
Embodied Carbon, kg CO2/kg material 8.3
6.2
Embodied Energy, MJ/kg 150
89
Embodied Water, L/kg 1150
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
180
Resilience: Unit (Modulus of Resilience), kJ/m3 850
100
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 40
22
Strength to Weight: Bending, points 42
20
Thermal Diffusivity, mm2/s 62
3.2
Thermal Shock Resistance, points 19
15

Alloy Composition

Aluminum (Al), % 92.4 to 94.9
0 to 0.025
Carbon (C), % 0
0.040 to 0.080
Cerium (Ce), % 0
0.050 to 0.1
Chromium (Cr), % 0
26 to 28
Copper (Cu), % 1.9 to 2.7
0
Iron (Fe), % 0.9 to 1.3
36.4 to 42.3
Magnesium (Mg), % 1.3 to 1.8
0
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0.9 to 1.2
31 to 33
Niobium (Nb), % 0
0.6 to 1.0
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0.1 to 0.25
0 to 0.3
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0.040 to 0.1
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0