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328.0 Aluminum vs. Grade 250 Maraging Steel

328.0 aluminum belongs to the aluminum alloys classification, while grade 250 maraging steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (13, 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 328.0 aluminum and the bottom bar is grade 250 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.6 to 2.1
7.3 to 17
Poisson's Ratio 0.33
0.3
Shear Modulus, GPa 27
75
Tensile Strength: Ultimate (UTS), MPa 200 to 270
970 to 1800
Tensile Strength: Yield (Proof), MPa 120 to 170
660 to 1740

Thermal Properties

Latent Heat of Fusion, J/g 510
270
Melting Completion (Liquidus), °C 620
1480
Melting Onset (Solidus), °C 560
1430
Specific Heat Capacity, J/kg-K 890
450
Thermal Expansion, µm/m-K 22
12

Otherwise Unclassified Properties

Base Metal Price, % relative 10
32
Density, g/cm3 2.7
8.2
Embodied Carbon, kg CO2/kg material 7.8
4.9
Embodied Energy, MJ/kg 140
65
Embodied Water, L/kg 1070
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8 to 5.0
130 to 150
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 51
23
Strength to Weight: Axial, points 21 to 28
33 to 61
Strength to Weight: Bending, points 28 to 34
26 to 40
Thermal Shock Resistance, points 9.2 to 12
29 to 54

Alloy Composition


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Aluminum (Al), % 84.5 to 91.1
0.050 to 0.15
Boron (B), % 0
0 to 0.0030
Calcium (Ca), % 0
0 to 0.050
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.35
0
Cobalt (Co), % 0
7.0 to 8.5
Copper (Cu), % 1.0 to 2.0
0
Iron (Fe), % 0 to 1.0
66.3 to 71.1
Magnesium (Mg), % 0.2 to 0.6
0
Manganese (Mn), % 0.2 to 0.6
0 to 0.1
Molybdenum (Mo), % 0
4.6 to 5.2
Nickel (Ni), % 0 to 0.25
17 to 19
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 7.5 to 8.5
0 to 0.1
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.25
0.3 to 0.5
Zinc (Zn), % 0 to 1.5
0
Zirconium (Zr), % 0
0 to 0.020
Residuals, % 0 to 0.5
0