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B535.0 Aluminum vs. AISI 439 Stainless Steel

B535.0 aluminum belongs to the aluminum alloys classification, while AISI 439 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (5, 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 B535.0 aluminum and the bottom bar is AISI 439 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 65
160
Elastic (Young's, Tensile) Modulus, GPa 66
200
Elongation at Break, % 10
23
Fatigue Strength, MPa 62
170
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 25
77
Shear Strength, MPa 210
310
Tensile Strength: Ultimate (UTS), MPa 260
490
Tensile Strength: Yield (Proof), MPa 130
250

Thermal Properties

Latent Heat of Fusion, J/g 390
280
Maximum Temperature: Mechanical, °C 170
890
Melting Completion (Liquidus), °C 630
1510
Melting Onset (Solidus), °C 550
1430
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 96
25
Thermal Expansion, µm/m-K 25
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 82
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.0
Density, g/cm3 2.6
7.7
Embodied Carbon, kg CO2/kg material 9.4
2.3
Embodied Energy, MJ/kg 160
34
Embodied Water, L/kg 1180
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
95
Resilience: Unit (Modulus of Resilience), kJ/m3 130
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
25
Strength to Weight: Axial, points 28
18
Strength to Weight: Bending, points 35
18
Thermal Diffusivity, mm2/s 40
6.7
Thermal Shock Resistance, points 11
16

Alloy Composition

Aluminum (Al), % 91.7 to 93.4
0 to 0.15
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.15
77.1 to 82.8
Magnesium (Mg), % 6.5 to 7.5
0
Manganese (Mn), % 0 to 0.050
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.15
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0.1 to 0.25
0.2 to 1.1
Residuals, % 0 to 0.15
0