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SAE-AISI 9254 Steel vs. 380.0 Aluminum

SAE-AISI 9254 steel belongs to the iron alloys classification, while 380.0 aluminum belongs to the aluminum alloys. 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 9254 steel and the bottom bar is 380.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
80
Elastic (Young's, Tensile) Modulus, GPa 190
74
Elongation at Break, % 20
3.0
Fatigue Strength, MPa 280
140
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
28
Shear Strength, MPa 410
190
Tensile Strength: Ultimate (UTS), MPa 660
320
Tensile Strength: Yield (Proof), MPa 410
160

Thermal Properties

Latent Heat of Fusion, J/g 270
510
Maximum Temperature: Mechanical, °C 410
170
Melting Completion (Liquidus), °C 1440
590
Melting Onset (Solidus), °C 1400
540
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 46
100
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
27
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
83

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
10
Density, g/cm3 7.7
2.9
Embodied Carbon, kg CO2/kg material 1.5
7.5
Embodied Energy, MJ/kg 20
140
Embodied Water, L/kg 49
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
8.0
Resilience: Unit (Modulus of Resilience), kJ/m3 450
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
48
Strength to Weight: Axial, points 24
31
Strength to Weight: Bending, points 22
36
Thermal Diffusivity, mm2/s 12
40
Thermal Shock Resistance, points 20
14

Alloy Composition

Aluminum (Al), % 0
79.6 to 89.5
Carbon (C), % 0.51 to 0.59
0
Chromium (Cr), % 0.6 to 0.8
0
Copper (Cu), % 0
3.0 to 4.0
Iron (Fe), % 96.1 to 97.1
0 to 2.0
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0.6 to 0.8
0 to 0.5
Nickel (Ni), % 0
0 to 0.5
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 1.2 to 1.6
7.5 to 9.5
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 0.35
Zinc (Zn), % 0
0 to 3.0
Residuals, % 0
0 to 0.5