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EN 1.4458 Stainless Steel vs. EN AC-43300 Aluminum

EN 1.4458 stainless steel belongs to the iron alloys classification, while EN AC-43300 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 1.4458 stainless steel and the bottom bar is EN AC-43300 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
91 to 94
Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 34
3.4 to 6.7
Fatigue Strength, MPa 150
76 to 77
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
27
Tensile Strength: Ultimate (UTS), MPa 510
280 to 290
Tensile Strength: Yield (Proof), MPa 190
210 to 230

Thermal Properties

Latent Heat of Fusion, J/g 300
540
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1420
600
Melting Onset (Solidus), °C 1370
590
Specific Heat Capacity, J/kg-K 470
910
Thermal Conductivity, W/m-K 16
140
Thermal Expansion, µm/m-K 15
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
40
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
140

Otherwise Unclassified Properties

Base Metal Price, % relative 30
9.5
Density, g/cm3 8.0
2.5
Embodied Carbon, kg CO2/kg material 5.4
7.9
Embodied Energy, MJ/kg 75
150
Embodied Water, L/kg 200
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
9.1 to 17
Resilience: Unit (Modulus of Resilience), kJ/m3 89
300 to 370
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
54
Strength to Weight: Axial, points 17
31 to 32
Strength to Weight: Bending, points 18
37 to 38
Thermal Diffusivity, mm2/s 4.2
59
Thermal Shock Resistance, points 12
13 to 14

Alloy Composition


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Aluminum (Al), % 0
88.9 to 90.8
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 19 to 22
0
Copper (Cu), % 0 to 2.0
0 to 0.050
Iron (Fe), % 40.2 to 53
0 to 0.19
Magnesium (Mg), % 0
0.25 to 0.45
Manganese (Mn), % 0 to 2.0
0 to 0.1
Molybdenum (Mo), % 2.0 to 2.5
0
Nickel (Ni), % 26 to 30
0
Nitrogen (N), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
9.0 to 10
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0
0 to 0.1