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EN 1.4911 Stainless Steel vs. EN AC-41000 Aluminum

EN 1.4911 stainless steel belongs to the iron alloys classification, while EN AC-41000 aluminum belongs to the aluminum 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 1.4911 stainless steel and the bottom bar is EN AC-41000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
69
Elongation at Break, % 11
4.5
Fatigue Strength, MPa 530
58 to 71
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Tensile Strength: Ultimate (UTS), MPa 1070
170 to 280
Tensile Strength: Yield (Proof), MPa 970
80 to 210

Thermal Properties

Latent Heat of Fusion, J/g 270
420
Maximum Temperature: Mechanical, °C 700
170
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1410
630
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 20
170
Thermal Expansion, µm/m-K 11
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
38
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
130

Otherwise Unclassified Properties

Base Metal Price, % relative 20
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 3.4
8.2
Embodied Energy, MJ/kg 49
150
Embodied Water, L/kg 130
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
6.4 to 11
Resilience: Unit (Modulus of Resilience), kJ/m3 2410
46 to 300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 38
18 to 29
Strength to Weight: Bending, points 30
26 to 35
Thermal Diffusivity, mm2/s 5.4
69
Thermal Shock Resistance, points 37
7.8 to 13

Alloy Composition

Aluminum (Al), % 0
95.2 to 97.6
Boron (B), % 0.0050 to 0.015
0
Carbon (C), % 0.050 to 0.12
0
Chromium (Cr), % 9.8 to 11.2
0
Cobalt (Co), % 5.0 to 7.0
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 75.7 to 83.8
0 to 0.6
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0
0.45 to 0.65
Manganese (Mn), % 0.3 to 1.3
0.3 to 0.5
Molybdenum (Mo), % 0.5 to 1.0
0
Nickel (Ni), % 0.2 to 1.2
0 to 0.050
Niobium (Nb), % 0.2 to 0.5
0
Nitrogen (N), % 0 to 0.035
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0.1 to 0.8
1.6 to 2.4
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0.050 to 0.2
Tungsten (W), % 0 to 0.7
0
Vanadium (V), % 0.1 to 0.4
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15