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S35500 Stainless Steel vs. A384.0 Aluminum

S35500 stainless steel belongs to the iron alloys classification, while A384.0 aluminum belongs to the aluminum alloys. There are 30 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 S35500 stainless steel and the bottom bar is A384.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
74
Elongation at Break, % 14
2.5
Fatigue Strength, MPa 690 to 730
140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
28
Shear Strength, MPa 810 to 910
200
Tensile Strength: Ultimate (UTS), MPa 1330 to 1490
330
Tensile Strength: Yield (Proof), MPa 1200 to 1280
170

Thermal Properties

Latent Heat of Fusion, J/g 280
550
Maximum Temperature: Mechanical, °C 870
170
Melting Completion (Liquidus), °C 1460
610
Melting Onset (Solidus), °C 1420
510
Specific Heat Capacity, J/kg-K 470
880
Thermal Conductivity, W/m-K 16
96
Thermal Expansion, µm/m-K 11
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
23
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
73

Otherwise Unclassified Properties

Base Metal Price, % relative 16
11
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 3.5
7.5
Embodied Energy, MJ/kg 47
140
Embodied Water, L/kg 130
1010

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180 to 190
6.9
Resilience: Unit (Modulus of Resilience), kJ/m3 3610 to 4100
180
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 47 to 53
32
Strength to Weight: Bending, points 34 to 37
38
Thermal Diffusivity, mm2/s 4.4
39
Thermal Shock Resistance, points 44 to 49
15

Alloy Composition

Aluminum (Al), % 0
79.3 to 86.5
Carbon (C), % 0.1 to 0.15
0
Chromium (Cr), % 15 to 16
0
Copper (Cu), % 0
3.0 to 4.5
Iron (Fe), % 73.2 to 77.7
0 to 1.3
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0.5 to 1.3
0 to 0.5
Molybdenum (Mo), % 2.5 to 3.2
0
Nickel (Ni), % 4.0 to 5.0
0 to 0.5
Niobium (Nb), % 0.1 to 0.5
0
Nitrogen (N), % 0.070 to 0.13
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.5
10.5 to 12
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.35
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5