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SAE-AISI 9254 Steel vs. 295.0 Aluminum

SAE-AISI 9254 steel belongs to the iron alloys classification, while 295.0 aluminum belongs to the aluminum 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 SAE-AISI 9254 steel and the bottom bar is 295.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
60 to 93
Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 20
2.0 to 7.2
Fatigue Strength, MPa 280
44 to 55
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
27
Shear Strength, MPa 410
180 to 230
Tensile Strength: Ultimate (UTS), MPa 660
230 to 280
Tensile Strength: Yield (Proof), MPa 410
100 to 220

Thermal Properties

Latent Heat of Fusion, J/g 270
400
Maximum Temperature: Mechanical, °C 410
170
Melting Completion (Liquidus), °C 1440
640
Melting Onset (Solidus), °C 1400
530
Specific Heat Capacity, J/kg-K 480
880
Thermal Conductivity, W/m-K 46
140
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
35
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
100

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
10
Density, g/cm3 7.7
3.0
Embodied Carbon, kg CO2/kg material 1.5
7.9
Embodied Energy, MJ/kg 20
150
Embodied Water, L/kg 49
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
5.2 to 13
Resilience: Unit (Modulus of Resilience), kJ/m3 450
77 to 340
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
46
Strength to Weight: Axial, points 24
21 to 26
Strength to Weight: Bending, points 22
27 to 32
Thermal Diffusivity, mm2/s 12
54
Thermal Shock Resistance, points 20
9.8 to 12

Alloy Composition

Aluminum (Al), % 0
91.4 to 95.3
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 1.0
Magnesium (Mg), % 0
0 to 0.030
Manganese (Mn), % 0.6 to 0.8
0 to 0.35
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 1.2 to 1.6
0.7 to 1.5
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15