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SAE-AISI 9254 Steel vs. A390.0 Aluminum

SAE-AISI 9254 steel belongs to the iron alloys classification, while A390.0 aluminum belongs to the aluminum 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 SAE-AISI 9254 steel and the bottom bar is A390.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
110 to 140
Elastic (Young's, Tensile) Modulus, GPa 190
75
Elongation at Break, % 20
0.87 to 0.91
Fatigue Strength, MPa 280
70 to 100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
28
Tensile Strength: Ultimate (UTS), MPa 660
190 to 290
Tensile Strength: Yield (Proof), MPa 410
190 to 290

Thermal Properties

Latent Heat of Fusion, J/g 270
640
Maximum Temperature: Mechanical, °C 410
170
Melting Completion (Liquidus), °C 1440
580
Melting Onset (Solidus), °C 1400
480
Specific Heat Capacity, J/kg-K 480
880
Thermal Conductivity, W/m-K 46
130
Thermal Expansion, µm/m-K 13
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
20
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
67

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
11
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 1.5
7.3
Embodied Energy, MJ/kg 20
140
Embodied Water, L/kg 49
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
1.6 to 2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 450
240 to 580
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 25
52
Strength to Weight: Axial, points 24
19 to 30
Strength to Weight: Bending, points 22
27 to 36
Thermal Diffusivity, mm2/s 12
56
Thermal Shock Resistance, points 20
9.0 to 14

Alloy Composition

Aluminum (Al), % 0
75.3 to 79.6
Carbon (C), % 0.51 to 0.59
0
Chromium (Cr), % 0.6 to 0.8
0
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 96.1 to 97.1
0 to 0.5
Magnesium (Mg), % 0
0.45 to 0.65
Manganese (Mn), % 0.6 to 0.8
0 to 0.1
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 1.2 to 1.6
16 to 18
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.2