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EN AC-45000 Aluminum vs. EN 1.4971 Stainless Steel

EN AC-45000 aluminum belongs to the aluminum alloys classification, while EN 1.4971 stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 1.4971 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 77
240
Elastic (Young's, Tensile) Modulus, GPa 73
210
Elongation at Break, % 1.1
34
Fatigue Strength, MPa 75
270
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
81
Tensile Strength: Ultimate (UTS), MPa 180
800
Tensile Strength: Yield (Proof), MPa 110
340

Thermal Properties

Latent Heat of Fusion, J/g 470
300
Maximum Temperature: Mechanical, °C 180
1100
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 520
1410
Specific Heat Capacity, J/kg-K 870
450
Thermal Conductivity, W/m-K 120
13
Thermal Expansion, µm/m-K 22
15

Otherwise Unclassified Properties

Base Metal Price, % relative 11
70
Density, g/cm3 3.0
8.4
Embodied Carbon, kg CO2/kg material 7.7
7.6
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 1070
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.7
220
Resilience: Unit (Modulus of Resilience), kJ/m3 80
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 17
26
Strength to Weight: Bending, points 24
23
Thermal Diffusivity, mm2/s 47
3.4
Thermal Shock Resistance, points 8.0
19

Alloy Composition

Aluminum (Al), % 82.2 to 91.8
0
Carbon (C), % 0
0.080 to 0.16
Chromium (Cr), % 0 to 0.15
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Copper (Cu), % 3.0 to 5.0
0
Iron (Fe), % 0 to 1.0
24.3 to 37.1
Lead (Pb), % 0 to 0.3
0
Magnesium (Mg), % 0 to 0.55
0
Manganese (Mn), % 0.2 to 0.65
0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0 to 0.45
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 5.0 to 7.0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.25
0
Tungsten (W), % 0
2.0 to 3.0
Zinc (Zn), % 0 to 2.0
0
Residuals, % 0 to 0.35
0