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444.0 Aluminum vs. S44537 Stainless Steel

444.0 aluminum belongs to the aluminum alloys classification, while S44537 stainless steel belongs to the iron alloys. There are 30 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 444.0 aluminum and the bottom bar is S44537 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 50
180
Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 25
21
Fatigue Strength, MPa 51
230
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 27
79
Tensile Strength: Ultimate (UTS), MPa 190
510
Tensile Strength: Yield (Proof), MPa 83
360

Thermal Properties

Latent Heat of Fusion, J/g 500
290
Maximum Temperature: Mechanical, °C 170
1000
Melting Completion (Liquidus), °C 610
1480
Melting Onset (Solidus), °C 600
1430
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 160
21
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 140
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
19
Density, g/cm3 2.6
7.9
Embodied Carbon, kg CO2/kg material 7.9
3.4
Embodied Energy, MJ/kg 150
50
Embodied Water, L/kg 1110
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 39
95
Resilience: Unit (Modulus of Resilience), kJ/m3 49
320
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 53
25
Strength to Weight: Axial, points 20
18
Strength to Weight: Bending, points 28
18
Thermal Diffusivity, mm2/s 67
5.6
Thermal Shock Resistance, points 8.8
17

Alloy Composition

Aluminum (Al), % 90.5 to 93.5
0 to 0.1
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
20 to 24
Copper (Cu), % 0 to 0.25
0 to 0.5
Iron (Fe), % 0 to 0.6
69 to 78.6
Lanthanum (La), % 0
0.040 to 0.2
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.35
0 to 0.8
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.040
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 6.5 to 7.5
0.1 to 0.6
Sulfur (S), % 0
0 to 0.0060
Titanium (Ti), % 0 to 0.25
0.020 to 0.2
Tungsten (W), % 0
1.0 to 3.0
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0 to 0.15
0