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5154A Aluminum vs. S40945 Stainless Steel

5154A aluminum belongs to the aluminum alloys classification, while S40945 stainless steel belongs to the iron alloys. There are 31 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 5154A aluminum and the bottom bar is S40945 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 58 to 100
160
Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 1.1 to 19
25
Fatigue Strength, MPa 83 to 160
160
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75
Shear Strength, MPa 140 to 210
270
Tensile Strength: Ultimate (UTS), MPa 230 to 370
430
Tensile Strength: Yield (Proof), MPa 96 to 320
230

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Maximum Temperature: Mechanical, °C 190
710
Melting Completion (Liquidus), °C 650
1450
Melting Onset (Solidus), °C 600
1410
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 130
26
Thermal Expansion, µm/m-K 24
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 110
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
8.0
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.8
2.2
Embodied Energy, MJ/kg 150
31
Embodied Water, L/kg 1180
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 36
89
Resilience: Unit (Modulus of Resilience), kJ/m3 68 to 760
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
25
Strength to Weight: Axial, points 24 to 38
15
Strength to Weight: Bending, points 31 to 43
16
Thermal Diffusivity, mm2/s 53
6.9
Thermal Shock Resistance, points 10 to 16
15

Alloy Composition

Aluminum (Al), % 93.7 to 96.9
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.25
10.5 to 11.7
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.5
85.1 to 89.3
Magnesium (Mg), % 3.1 to 3.9
0
Manganese (Mn), % 0 to 0.5
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0.18 to 0.4
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0.050 to 0.2
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0