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384.0 Aluminum vs. EN 1.4618 Stainless Steel

384.0 aluminum belongs to the aluminum alloys classification, while EN 1.4618 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, 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 384.0 aluminum and the bottom bar is EN 1.4618 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85
200 to 210
Elastic (Young's, Tensile) Modulus, GPa 74
200
Elongation at Break, % 2.5
51
Fatigue Strength, MPa 140
240 to 250
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 28
77
Shear Strength, MPa 200
480 to 500
Tensile Strength: Ultimate (UTS), MPa 330
680 to 700
Tensile Strength: Yield (Proof), MPa 170
250 to 260

Thermal Properties

Latent Heat of Fusion, J/g 550
280
Maximum Temperature: Mechanical, °C 170
900
Melting Completion (Liquidus), °C 580
1400
Melting Onset (Solidus), °C 530
1360
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 96
15
Thermal Expansion, µm/m-K 21
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 69
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 11
13
Density, g/cm3 2.9
7.7
Embodied Carbon, kg CO2/kg material 7.4
2.7
Embodied Energy, MJ/kg 140
39
Embodied Water, L/kg 1010
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
270 to 280
Resilience: Unit (Modulus of Resilience), kJ/m3 190
160 to 170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
25
Strength to Weight: Axial, points 32
24 to 25
Strength to Weight: Bending, points 37
22 to 23
Thermal Diffusivity, mm2/s 39
4.0
Thermal Shock Resistance, points 15
15 to 16

Alloy Composition

Aluminum (Al), % 77.3 to 86.5
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
16.5 to 18.5
Copper (Cu), % 3.0 to 4.5
1.0 to 2.5
Iron (Fe), % 0 to 1.3
62.7 to 72.5
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
5.5 to 9.5
Nickel (Ni), % 0 to 0.5
4.5 to 5.5
Nitrogen (N), % 0
0 to 0.15
Phosphorus (P), % 0
0 to 0.070
Silicon (Si), % 10.5 to 12
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 0 to 0.35
0
Zinc (Zn), % 0 to 3.0
0
Residuals, % 0 to 0.5
0