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S45503 Stainless Steel vs. EN AC-42100 Aluminum

S45503 stainless steel belongs to the iron alloys classification, while EN AC-42100 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (10, 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 S45503 stainless steel and the bottom bar is EN AC-42100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 410 to 500
91
Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 4.6 to 6.8
3.4 to 9.0
Fatigue Strength, MPa 710 to 800
76 to 82
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
26
Tensile Strength: Ultimate (UTS), MPa 1610 to 1850
280 to 290
Tensile Strength: Yield (Proof), MPa 1430 to 1700
210 to 230

Thermal Properties

Latent Heat of Fusion, J/g 270
500
Maximum Temperature: Mechanical, °C 760
170
Melting Completion (Liquidus), °C 1440
610
Melting Onset (Solidus), °C 1400
600
Specific Heat Capacity, J/kg-K 470
910
Thermal Expansion, µm/m-K 11
22

Otherwise Unclassified Properties

Base Metal Price, % relative 15
9.5
Density, g/cm3 7.9
2.6
Embodied Carbon, kg CO2/kg material 3.4
8.0
Embodied Energy, MJ/kg 48
150
Embodied Water, L/kg 120
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 82 to 110
9.1 to 23
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
53
Strength to Weight: Axial, points 57 to 65
30 to 31
Strength to Weight: Bending, points 39 to 43
37 to 38
Thermal Shock Resistance, points 56 to 64
13

Alloy Composition

Aluminum (Al), % 0
91.3 to 93.3
Carbon (C), % 0 to 0.010
0
Chromium (Cr), % 11 to 12.5
0
Copper (Cu), % 1.5 to 2.5
0 to 0.050
Iron (Fe), % 72.4 to 78.9
0 to 0.19
Magnesium (Mg), % 0
0.25 to 0.45
Manganese (Mn), % 0 to 0.5
0 to 0.1
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 7.5 to 9.5
0
Niobium (Nb), % 0.1 to 0.5
0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0 to 0.2
6.5 to 7.5
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 1.0 to 1.4
0 to 0.25
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0
0 to 0.1