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EN AC-21100 Aluminum vs. EN 1.4913 Stainless Steel

EN AC-21100 aluminum belongs to the aluminum alloys classification, while EN 1.4913 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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-21100 aluminum and the bottom bar is EN 1.4913 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 6.2 to 7.3
14 to 22
Fatigue Strength, MPa 79 to 87
320 to 480
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
75
Tensile Strength: Ultimate (UTS), MPa 340 to 350
870 to 980
Tensile Strength: Yield (Proof), MPa 210 to 240
480 to 850

Thermal Properties

Latent Heat of Fusion, J/g 390
270
Maximum Temperature: Mechanical, °C 170
700
Melting Completion (Liquidus), °C 670
1460
Melting Onset (Solidus), °C 550
1410
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 130
24
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 100
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.0
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.0
2.9
Embodied Energy, MJ/kg 150
41
Embodied Water, L/kg 1150
97

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 21
130 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 400
600 to 1860
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 31 to 33
31 to 35
Strength to Weight: Bending, points 36 to 37
26 to 28
Thermal Diffusivity, mm2/s 48
6.5
Thermal Shock Resistance, points 15
31 to 34

Alloy Composition

Aluminum (Al), % 93.4 to 95.7
0 to 0.020
Boron (B), % 0
0 to 0.0015
Carbon (C), % 0
0.17 to 0.23
Chromium (Cr), % 0
10 to 11.5
Copper (Cu), % 4.2 to 5.2
0
Iron (Fe), % 0 to 0.19
84.5 to 88.3
Manganese (Mn), % 0 to 0.55
0.4 to 0.9
Molybdenum (Mo), % 0
0.5 to 0.8
Nickel (Ni), % 0
0.2 to 0.6
Niobium (Nb), % 0
0.25 to 0.55
Nitrogen (N), % 0
0.050 to 0.1
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.18
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0.15 to 0.3
0
Vanadium (V), % 0
0.1 to 0.3
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.1
0