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6262 Aluminum vs. SAE-AISI 81B45 Steel

6262 aluminum belongs to the aluminum alloys classification, while SAE-AISI 81B45 steel belongs to the iron 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 6262 aluminum and the bottom bar is SAE-AISI 81B45 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 4.6 to 10
12 to 24
Fatigue Strength, MPa 90 to 110
250 to 350
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 170 to 240
340 to 400
Tensile Strength: Ultimate (UTS), MPa 290 to 390
540 to 670
Tensile Strength: Yield (Proof), MPa 270 to 360
350 to 560

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 160
410
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 580
1420
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 170
40
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
2.3
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.3
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1190
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 31
77 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 530 to 940
320 to 840
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 48
24
Strength to Weight: Axial, points 29 to 39
19 to 24
Strength to Weight: Bending, points 35 to 42
19 to 22
Thermal Diffusivity, mm2/s 69
11
Thermal Shock Resistance, points 13 to 18
17 to 21

Alloy Composition

Aluminum (Al), % 94.7 to 97.8
0
Bismuth (Bi), % 0.4 to 0.7
0
Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0
0.43 to 0.48
Chromium (Cr), % 0.040 to 0.14
0.35 to 0.55
Copper (Cu), % 0.15 to 0.4
0
Iron (Fe), % 0 to 0.7
97 to 98
Lead (Pb), % 0.4 to 0.7
0
Magnesium (Mg), % 0.8 to 1.2
0
Manganese (Mn), % 0 to 0.15
0.75 to 1.0
Molybdenum (Mo), % 0
0.080 to 0.15
Nickel (Ni), % 0
0.2 to 0.4
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0.4 to 0.8
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0