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AISI 415 Stainless Steel vs. 240.0 Aluminum

AISI 415 stainless steel belongs to the iron alloys classification, while 240.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, 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 AISI 415 stainless steel and the bottom bar is 240.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 17
1.0
Fatigue Strength, MPa 430
140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
27
Tensile Strength: Ultimate (UTS), MPa 900
240
Tensile Strength: Yield (Proof), MPa 700
200

Thermal Properties

Latent Heat of Fusion, J/g 270
380
Maximum Temperature: Mechanical, °C 780
180
Melting Completion (Liquidus), °C 1450
600
Melting Onset (Solidus), °C 1400
520
Specific Heat Capacity, J/kg-K 480
860
Thermal Conductivity, W/m-K 24
96
Thermal Expansion, µm/m-K 10
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
23
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
65

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 7.8
3.2
Embodied Carbon, kg CO2/kg material 2.5
8.7
Embodied Energy, MJ/kg 35
150
Embodied Water, L/kg 110
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
2.2
Resilience: Unit (Modulus of Resilience), kJ/m3 1250
280
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
43
Strength to Weight: Axial, points 32
20
Strength to Weight: Bending, points 26
26
Thermal Diffusivity, mm2/s 6.4
35
Thermal Shock Resistance, points 33
11

Alloy Composition

Aluminum (Al), % 0
81.7 to 86.9
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 11.5 to 14
0
Copper (Cu), % 0
7.0 to 9.0
Iron (Fe), % 77.8 to 84
0 to 0.5
Magnesium (Mg), % 0
5.5 to 6.5
Manganese (Mn), % 0.5 to 1.0
0.3 to 0.7
Molybdenum (Mo), % 0.5 to 1.0
0
Nickel (Ni), % 3.5 to 5.5
0.3 to 0.7
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.6
0 to 0.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15