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SAE-AISI 50B60 Steel vs. 6065 Aluminum

SAE-AISI 50B60 steel belongs to the iron alloys classification, while 6065 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, 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 SAE-AISI 50B60 steel and the bottom bar is 6065 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 12 to 20
4.5 to 11
Fatigue Strength, MPa 240 to 330
96 to 110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
26
Shear Strength, MPa 380
190 to 230
Tensile Strength: Ultimate (UTS), MPa 610 to 630
310 to 400
Tensile Strength: Yield (Proof), MPa 350 to 530
270 to 380

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 410
180
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1410
590
Specific Heat Capacity, J/kg-K 470
890
Thermal Conductivity, W/m-K 45
170
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
43
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
140

Otherwise Unclassified Properties

Base Metal Price, % relative 2.0
11
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 1.4
8.4
Embodied Energy, MJ/kg 19
150
Embodied Water, L/kg 48
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 100
17 to 34
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 750
540 to 1040
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
49
Strength to Weight: Axial, points 22 to 23
31 to 40
Strength to Weight: Bending, points 20 to 21
36 to 43
Thermal Diffusivity, mm2/s 12
67
Thermal Shock Resistance, points 20
14 to 18

Alloy Composition

Aluminum (Al), % 0
94.4 to 98.2
Bismuth (Bi), % 0
0.5 to 1.5
Boron (B), % 0.00050 to 0.0030
0
Carbon (C), % 0.56 to 0.64
0
Chromium (Cr), % 0.4 to 0.6
0 to 0.15
Copper (Cu), % 0
0.15 to 0.4
Iron (Fe), % 97.3 to 98.1
0 to 0.7
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0
0.8 to 1.2
Manganese (Mn), % 0.75 to 1.0
0 to 0.15
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0.4 to 0.8
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0 to 0.15
Residuals, % 0
0 to 0.15