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3105 Aluminum vs. Grade 250 Maraging Steel

3105 aluminum belongs to the aluminum alloys classification, while grade 250 maraging steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (12, 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 3105 aluminum and the bottom bar is grade 250 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 1.1 to 20
7.3 to 17
Poisson's Ratio 0.33
0.3
Shear Modulus, GPa 26
75
Shear Strength, MPa 77 to 140
600 to 1060
Tensile Strength: Ultimate (UTS), MPa 120 to 240
970 to 1800
Tensile Strength: Yield (Proof), MPa 46 to 220
660 to 1740

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Melting Completion (Liquidus), °C 660
1480
Melting Onset (Solidus), °C 640
1430
Specific Heat Capacity, J/kg-K 900
450
Thermal Expansion, µm/m-K 24
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
32
Density, g/cm3 2.8
8.2
Embodied Carbon, kg CO2/kg material 8.2
4.9
Embodied Energy, MJ/kg 150
65
Embodied Water, L/kg 1180
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 19
130 to 150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
23
Strength to Weight: Axial, points 12 to 24
33 to 61
Strength to Weight: Bending, points 20 to 31
26 to 40
Thermal Shock Resistance, points 5.2 to 11
29 to 54

Alloy Composition

Aluminum (Al), % 96 to 99.5
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 0.2
0
Cobalt (Co), % 0
7.0 to 8.5
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 0 to 0.7
66.3 to 71.1
Magnesium (Mg), % 0.2 to 0.8
0
Manganese (Mn), % 0.3 to 0.8
0 to 0.1
Molybdenum (Mo), % 0
4.6 to 5.2
Nickel (Ni), % 0
17 to 19
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.6
0 to 0.1
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.1
0.3 to 0.5
Zinc (Zn), % 0 to 0.4
0
Zirconium (Zr), % 0
0 to 0.020
Residuals, % 0 to 0.15
0

Comparable Variants