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A201.0 Aluminum vs. SAE-AISI 8625 Steel

A201.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 8625 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 A201.0 aluminum and the bottom bar is SAE-AISI 8625 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 4.7
25
Fatigue Strength, MPa 97
240
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 480
510
Tensile Strength: Yield (Proof), MPa 420
330

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Maximum Temperature: Mechanical, °C 170
410
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 570
1420
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 120
39
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 90
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.6
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.1
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1150
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1250
300
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 44
18
Strength to Weight: Bending, points 45
18
Thermal Diffusivity, mm2/s 46
10
Thermal Shock Resistance, points 21
17

Alloy Composition

Aluminum (Al), % 93.7 to 95.5
0
Carbon (C), % 0
0.23 to 0.28
Chromium (Cr), % 0
0.4 to 0.6
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 0 to 0.1
96.8 to 98
Magnesium (Mg), % 0.15 to 0.35
0
Manganese (Mn), % 0.2 to 0.4
0.7 to 0.9
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0
0.4 to 0.7
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.050
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0.15 to 0.35
0
Residuals, % 0 to 0.1
0