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EN 1.4405 Stainless Steel vs. EN AC-44300 Aluminum

EN 1.4405 stainless steel belongs to the iron alloys classification, while EN AC-44300 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 1.4405 stainless steel and the bottom bar is EN AC-44300 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 17
1.1
Fatigue Strength, MPa 370
100
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 860
270
Tensile Strength: Yield (Proof), MPa 610
150

Thermal Properties

Latent Heat of Fusion, J/g 280
570
Maximum Temperature: Mechanical, °C 870
170
Melting Completion (Liquidus), °C 1450
590
Melting Onset (Solidus), °C 1400
580
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 17
130
Thermal Expansion, µm/m-K 11
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
33
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
120

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 7.8
2.5
Embodied Carbon, kg CO2/kg material 2.8
7.7
Embodied Energy, MJ/kg 39
140
Embodied Water, L/kg 130
1050

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 950
150
Stiffness to Weight: Axial, points 14
16
Stiffness to Weight: Bending, points 25
55
Strength to Weight: Axial, points 31
29
Strength to Weight: Bending, points 26
36
Thermal Diffusivity, mm2/s 4.6
58
Thermal Shock Resistance, points 29
13

Alloy Composition

Aluminum (Al), % 0
84.3 to 89.5
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 15 to 17
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 73.6 to 80.3
0 to 1.0
Manganese (Mn), % 0 to 1.0
0 to 0.55
Molybdenum (Mo), % 0.7 to 1.5
0
Nickel (Ni), % 4.0 to 6.0
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.8
10.5 to 13.5
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.25