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295.0 Aluminum vs. SAE-AISI 4150 Steel

295.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 4150 steel belongs to the iron alloys. There are 31 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 295.0 aluminum and the bottom bar is SAE-AISI 4150 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60 to 93
200 to 380
Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 2.0 to 7.2
12 to 20
Fatigue Strength, MPa 44 to 55
260 to 780
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 180 to 230
410 to 800
Tensile Strength: Ultimate (UTS), MPa 230 to 280
660 to 1310
Tensile Strength: Yield (Proof), MPa 100 to 220
380 to 1220

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 170
420
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 530
1420
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 140
42
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 100
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
2.4
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 7.9
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1140
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.2 to 13
82 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 340
380 to 3930
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 21 to 26
24 to 47
Strength to Weight: Bending, points 27 to 32
22 to 34
Thermal Diffusivity, mm2/s 54
11
Thermal Shock Resistance, points 9.8 to 12
19 to 39

Alloy Composition

Aluminum (Al), % 91.4 to 95.3
0
Carbon (C), % 0
0.48 to 0.53
Chromium (Cr), % 0
0.8 to 1.1
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 0 to 1.0
96.7 to 97.7
Magnesium (Mg), % 0 to 0.030
0
Manganese (Mn), % 0 to 0.35
0.75 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0.7 to 1.5
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0 to 0.15
0