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201.0 Aluminum vs. SAE-AISI 4130 Steel

201.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 4130 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 201.0 aluminum and the bottom bar is SAE-AISI 4130 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 95 to 140
200 to 300
Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 4.4 to 20
13 to 26
Fatigue Strength, MPa 120 to 150
320 to 660
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 290
340 to 640
Tensile Strength: Ultimate (UTS), MPa 370 to 470
530 to 1040
Tensile Strength: Yield (Proof), MPa 220 to 400
440 to 980

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Maximum Temperature: Mechanical, °C 170
420
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 570
1420
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 120
43
Thermal Expansion, µm/m-K 19
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30 to 33
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 87 to 97
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 38
2.4
Density, g/cm3 3.1
7.8
Embodied Carbon, kg CO2/kg material 8.7
1.5
Embodied Energy, MJ/kg 160
20

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 63
83 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 1160
500 to 2550
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
24
Strength to Weight: Axial, points 33 to 42
19 to 37
Strength to Weight: Bending, points 37 to 44
19 to 29
Thermal Diffusivity, mm2/s 45
12
Thermal Shock Resistance, points 19 to 25
16 to 31

Alloy Composition

Aluminum (Al), % 92.1 to 95.1
0
Carbon (C), % 0
0.28 to 0.33
Chromium (Cr), % 0
0.8 to 1.1
Copper (Cu), % 4.0 to 5.2
0
Iron (Fe), % 0 to 0.15
97.3 to 98.2
Magnesium (Mg), % 0.15 to 0.55
0
Manganese (Mn), % 0.2 to 0.5
0.4 to 0.6
Molybdenum (Mo), % 0
0.15 to 0.25
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.1
0.15 to 0.35
Silver (Ag), % 0.4 to 1.0
0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0.15 to 0.35
0
Residuals, % 0 to 0.1
0