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EN AC-45000 Aluminum vs. EN 1.4988 Stainless Steel

EN AC-45000 aluminum belongs to the aluminum alloys classification, while EN 1.4988 stainless steel belongs to the iron alloys. There are 30 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 EN AC-45000 aluminum and the bottom bar is EN 1.4988 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 77
190
Elastic (Young's, Tensile) Modulus, GPa 73
200
Elongation at Break, % 1.1
34
Fatigue Strength, MPa 75
230
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Tensile Strength: Ultimate (UTS), MPa 180
640
Tensile Strength: Yield (Proof), MPa 110
290

Thermal Properties

Latent Heat of Fusion, J/g 470
290
Maximum Temperature: Mechanical, °C 180
920
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 520
1400
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 22
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 81
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 11
23
Density, g/cm3 3.0
7.9
Embodied Carbon, kg CO2/kg material 7.7
6.0
Embodied Energy, MJ/kg 140
89
Embodied Water, L/kg 1070
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.7
180
Resilience: Unit (Modulus of Resilience), kJ/m3 80
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 17
23
Strength to Weight: Bending, points 24
21
Thermal Diffusivity, mm2/s 47
4.0
Thermal Shock Resistance, points 8.0
14

Alloy Composition

Aluminum (Al), % 82.2 to 91.8
0
Carbon (C), % 0
0.040 to 0.1
Chromium (Cr), % 0 to 0.15
15.5 to 17.5
Copper (Cu), % 3.0 to 5.0
0
Iron (Fe), % 0 to 1.0
62.1 to 69.5
Lead (Pb), % 0 to 0.3
0
Magnesium (Mg), % 0 to 0.55
0
Manganese (Mn), % 0.2 to 0.65
0 to 1.5
Molybdenum (Mo), % 0
1.1 to 1.5
Nickel (Ni), % 0 to 0.45
12.5 to 14.5
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0
0.060 to 0.14
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 5.0 to 7.0
0.3 to 0.6
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.25
0
Vanadium (V), % 0
0.6 to 0.85
Zinc (Zn), % 0 to 2.0
0
Residuals, % 0 to 0.35
0