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EN 1.4458 Stainless Steel vs. EN AC-46000 Aluminum

EN 1.4458 stainless steel belongs to the iron alloys classification, while EN AC-46000 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-46000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
91
Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 34
1.0
Fatigue Strength, MPa 150
110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
28
Tensile Strength: Ultimate (UTS), MPa 510
270
Tensile Strength: Yield (Proof), MPa 190
160

Thermal Properties

Latent Heat of Fusion, J/g 300
530
Maximum Temperature: Mechanical, °C 1100
180
Melting Completion (Liquidus), °C 1420
620
Melting Onset (Solidus), °C 1370
530
Specific Heat Capacity, J/kg-K 470
880
Thermal Conductivity, W/m-K 16
100
Thermal Expansion, µm/m-K 15
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
26
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
82

Otherwise Unclassified Properties

Base Metal Price, % relative 30
10
Density, g/cm3 8.0
2.8
Embodied Carbon, kg CO2/kg material 5.4
7.6
Embodied Energy, MJ/kg 75
140
Embodied Water, L/kg 200
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 89
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
49
Strength to Weight: Axial, points 17
26
Strength to Weight: Bending, points 18
33
Thermal Diffusivity, mm2/s 4.2
42
Thermal Shock Resistance, points 12
12

Alloy Composition


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Aluminum (Al), % 0
79.7 to 90
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 19 to 22
0 to 0.15
Copper (Cu), % 0 to 2.0
2.0 to 4.0
Iron (Fe), % 40.2 to 53
0 to 1.3
Lead (Pb), % 0
0 to 0.35
Magnesium (Mg), % 0
0.050 to 0.55
Manganese (Mn), % 0 to 2.0
0 to 0.55
Molybdenum (Mo), % 2.0 to 2.5
0
Nickel (Ni), % 26 to 30
0 to 0.55
Nitrogen (N), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
8.0 to 11
Sulfur (S), % 0 to 0.025
0
Tin (Sn), % 0
0 to 0.15
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 1.2
Residuals, % 0
0 to 0.25