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S31277 Stainless Steel vs. EN AC-46300 Aluminum

S31277 stainless steel belongs to the iron alloys classification, while EN AC-46300 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, 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 S31277 stainless steel and the bottom bar is EN AC-46300 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
73
Elongation at Break, % 45
1.1
Fatigue Strength, MPa 380
79
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
27
Tensile Strength: Ultimate (UTS), MPa 860
200
Tensile Strength: Yield (Proof), MPa 410
110

Thermal Properties

Latent Heat of Fusion, J/g 310
490
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1460
630
Melting Onset (Solidus), °C 1410
530
Specific Heat Capacity, J/kg-K 460
880
Thermal Expansion, µm/m-K 16
22

Otherwise Unclassified Properties

Base Metal Price, % relative 36
10
Density, g/cm3 8.1
2.9
Embodied Carbon, kg CO2/kg material 6.7
7.7
Embodied Energy, MJ/kg 90
140
Embodied Water, L/kg 220
1060

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
1.9
Resilience: Unit (Modulus of Resilience), kJ/m3 410
89
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
49
Strength to Weight: Axial, points 29
20
Strength to Weight: Bending, points 25
27
Thermal Shock Resistance, points 19
9.1

Alloy Composition

Aluminum (Al), % 0
84 to 90
Carbon (C), % 0 to 0.020
0
Chromium (Cr), % 20.5 to 23
0
Copper (Cu), % 0.5 to 1.5
3.0 to 4.0
Iron (Fe), % 35.5 to 46.2
0 to 0.8
Lead (Pb), % 0
0 to 0.15
Magnesium (Mg), % 0
0.3 to 0.6
Manganese (Mn), % 0 to 3.0
0.2 to 0.65
Molybdenum (Mo), % 6.5 to 8.0
0
Nickel (Ni), % 26 to 28
0 to 0.3
Nitrogen (N), % 0.3 to 0.4
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
6.5 to 8.0
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.65
Residuals, % 0
0 to 0.55