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N08031 Stainless Steel vs. EN AC-44100 Aluminum

N08031 stainless steel belongs to the iron alloys classification, while EN AC-44100 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 N08031 stainless steel and the bottom bar is EN AC-44100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
72
Elongation at Break, % 45
4.9
Fatigue Strength, MPa 290
64
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 81
27
Tensile Strength: Ultimate (UTS), MPa 730
180
Tensile Strength: Yield (Proof), MPa 310
87

Thermal Properties

Latent Heat of Fusion, J/g 310
570
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1440
590
Melting Onset (Solidus), °C 1390
580
Specific Heat Capacity, J/kg-K 460
900
Thermal Conductivity, W/m-K 12
130
Thermal Expansion, µm/m-K 18
21

Otherwise Unclassified Properties

Base Metal Price, % relative 39
9.5
Density, g/cm3 8.1
2.5
Embodied Carbon, kg CO2/kg material 7.1
7.7
Embodied Energy, MJ/kg 96
140
Embodied Water, L/kg 240
1050

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
7.1
Resilience: Unit (Modulus of Resilience), kJ/m3 230
53
Stiffness to Weight: Axial, points 14
16
Stiffness to Weight: Bending, points 24
55
Strength to Weight: Axial, points 25
19
Strength to Weight: Bending, points 22
27
Thermal Diffusivity, mm2/s 3.1
58
Thermal Shock Resistance, points 14
8.2

Alloy Composition

Aluminum (Al), % 0
84.4 to 89.5
Carbon (C), % 0 to 0.015
0
Chromium (Cr), % 26 to 28
0
Copper (Cu), % 1.0 to 1.4
0 to 0.15
Iron (Fe), % 29 to 36.9
0 to 0.65
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 2.0
0 to 0.55
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 30 to 32
0 to 0.1
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.3
10.5 to 13.5
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15