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B443.0 Aluminum vs. S15700 Stainless Steel

B443.0 aluminum belongs to the aluminum alloys classification, while S15700 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 B443.0 aluminum and the bottom bar is S15700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 43
200 to 460
Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 4.9
1.1 to 29
Fatigue Strength, MPa 55
370 to 770
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 110
770 to 1070
Tensile Strength: Ultimate (UTS), MPa 150
1180 to 1890
Tensile Strength: Yield (Proof), MPa 50
500 to 1770

Thermal Properties

Latent Heat of Fusion, J/g 470
290
Maximum Temperature: Mechanical, °C 170
870
Melting Completion (Liquidus), °C 620
1440
Melting Onset (Solidus), °C 600
1400
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 150
16
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
15
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.0
3.4
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 1130
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
17 to 270
Resilience: Unit (Modulus of Resilience), kJ/m3 18
640 to 4660
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 15
42 to 67
Strength to Weight: Bending, points 23
32 to 43
Thermal Diffusivity, mm2/s 61
4.2
Thermal Shock Resistance, points 6.8
39 to 63

Alloy Composition

Aluminum (Al), % 91.9 to 95.5
0.75 to 1.5
Carbon (C), % 0
0 to 0.090
Chromium (Cr), % 0
14 to 16
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 0.8
69.6 to 76.8
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.35
0 to 1.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
6.5 to 7.7
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 4.5 to 6.0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0 to 0.15
0