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EN 1.4911 Stainless Steel vs. EN AC-45300 Aluminum

EN 1.4911 stainless steel belongs to the iron alloys classification, while EN AC-45300 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-45300 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 11
1.0 to 2.8
Fatigue Strength, MPa 530
59 to 72
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
27
Tensile Strength: Ultimate (UTS), MPa 1070
220 to 290
Tensile Strength: Yield (Proof), MPa 970
150 to 230

Thermal Properties

Latent Heat of Fusion, J/g 270
470
Maximum Temperature: Mechanical, °C 700
170
Melting Completion (Liquidus), °C 1450
630
Melting Onset (Solidus), °C 1410
590
Specific Heat Capacity, J/kg-K 470
890
Thermal Conductivity, W/m-K 20
150
Thermal Expansion, µm/m-K 11
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
36
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
120

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
8.0
Embodied Energy, MJ/kg 49
150
Embodied Water, L/kg 130
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
2.7 to 5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 2410
160 to 390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 38
23 to 29
Strength to Weight: Bending, points 30
30 to 35
Thermal Diffusivity, mm2/s 5.4
60
Thermal Shock Resistance, points 37
10 to 13

Alloy Composition

Aluminum (Al), % 0
90.2 to 94.2
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
1.0 to 1.5
Iron (Fe), % 75.7 to 83.8
0 to 0.65
Lead (Pb), % 0
0 to 0.15
Magnesium (Mg), % 0
0.35 to 0.65
Manganese (Mn), % 0.3 to 1.3
0 to 0.55
Molybdenum (Mo), % 0.5 to 1.0
0
Nickel (Ni), % 0.2 to 1.2
0 to 0.25
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
4.5 to 5.5
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0 to 0.25
Tungsten (W), % 0 to 0.7
0
Vanadium (V), % 0.1 to 0.4
0
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15