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2618 Aluminum vs. EN 1.4841 Stainless Steel

2618 aluminum belongs to the aluminum alloys classification, while EN 1.4841 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 1.4841 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
32
Fatigue Strength, MPa 110
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
78
Shear Strength, MPa 260
430
Tensile Strength: Ultimate (UTS), MPa 420
650
Tensile Strength: Yield (Proof), MPa 350
260

Thermal Properties

Latent Heat of Fusion, J/g 390
330
Maximum Temperature: Mechanical, °C 210
1150
Melting Completion (Liquidus), °C 640
1380
Melting Onset (Solidus), °C 550
1340
Specific Heat Capacity, J/kg-K 880
490
Thermal Conductivity, W/m-K 160
15
Thermal Expansion, µm/m-K 22
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 11
25
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 8.3
4.3
Embodied Energy, MJ/kg 150
62
Embodied Water, L/kg 1150
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
170
Resilience: Unit (Modulus of Resilience), kJ/m3 850
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 40
23
Strength to Weight: Bending, points 42
21
Thermal Diffusivity, mm2/s 62
4.0
Thermal Shock Resistance, points 19
15

Alloy Composition

Aluminum (Al), % 92.4 to 94.9
0
Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0
24 to 26
Copper (Cu), % 1.9 to 2.7
0
Iron (Fe), % 0.9 to 1.3
47.1 to 55.5
Magnesium (Mg), % 1.3 to 1.8
0
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0.9 to 1.2
19 to 22
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.1 to 0.25
1.5 to 2.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0.040 to 0.1
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0