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EN 1.4104 Stainless Steel vs. EN AC-41000 Aluminum

EN 1.4104 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 1.4104 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 to 23
4.5
Fatigue Strength, MPa 230 to 310
58 to 71
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Tensile Strength: Ultimate (UTS), MPa 630 to 750
170 to 280
Tensile Strength: Yield (Proof), MPa 350 to 560
80 to 210

Thermal Properties

Latent Heat of Fusion, J/g 280
420
Maximum Temperature: Mechanical, °C 860
170
Melting Completion (Liquidus), °C 1440
640
Melting Onset (Solidus), °C 1390
630
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 25
170
Thermal Expansion, µm/m-K 10
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
38
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
130

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 2.2
8.2
Embodied Energy, MJ/kg 30
150
Embodied Water, L/kg 120
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 120
6.4 to 11
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 800
46 to 300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 23 to 27
18 to 29
Strength to Weight: Bending, points 21 to 24
26 to 35
Thermal Diffusivity, mm2/s 6.7
69
Thermal Shock Resistance, points 22 to 27
7.8 to 13

Alloy Composition

Aluminum (Al), % 0
95.2 to 97.6
Carbon (C), % 0.1 to 0.17
0
Chromium (Cr), % 15.5 to 17.5
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 78.8 to 84.1
0 to 0.6
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0
0.45 to 0.65
Manganese (Mn), % 0 to 1.5
0.3 to 0.5
Molybdenum (Mo), % 0.2 to 0.6
0
Nickel (Ni), % 0
0 to 0.050
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
1.6 to 2.4
Sulfur (S), % 0.15 to 0.35
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0.050 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15