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Grade 250 Maraging Steel vs. 7003 Aluminum

Grade 250 maraging steel belongs to the iron alloys classification, while 7003 aluminum belongs to the aluminum alloys. There are 23 material properties with values for both materials. Properties with values for just one material (10, 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 grade 250 maraging steel and the bottom bar is 7003 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 7.3 to 17
11
Poisson's Ratio 0.3
0.32
Shear Modulus, GPa 75
26
Shear Strength, MPa 600 to 1060
210 to 230
Tensile Strength: Ultimate (UTS), MPa 970 to 1800
350 to 390
Tensile Strength: Yield (Proof), MPa 660 to 1740
300 to 310

Thermal Properties

Latent Heat of Fusion, J/g 270
380
Melting Completion (Liquidus), °C 1480
630
Melting Onset (Solidus), °C 1430
510
Specific Heat Capacity, J/kg-K 450
870
Thermal Expansion, µm/m-K 12
24

Otherwise Unclassified Properties

Base Metal Price, % relative 32
9.5
Density, g/cm3 8.2
2.9
Embodied Carbon, kg CO2/kg material 4.9
8.1
Embodied Energy, MJ/kg 65
150
Embodied Water, L/kg 140
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 150
37 to 41
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
47
Strength to Weight: Axial, points 33 to 61
33 to 37
Strength to Weight: Bending, points 26 to 40
37 to 40
Thermal Shock Resistance, points 29 to 54
15 to 17

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
90.6 to 94.5
Boron (B), % 0 to 0.0030
0
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 0
0 to 0.2
Cobalt (Co), % 7.0 to 8.5
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 66.3 to 71.1
0 to 0.35
Magnesium (Mg), % 0
0.5 to 1.0
Manganese (Mn), % 0 to 0.1
0 to 0.3
Molybdenum (Mo), % 4.6 to 5.2
0
Nickel (Ni), % 17 to 19
0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0 to 0.1
0 to 0.3
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0.3 to 0.5
0 to 0.2
Zinc (Zn), % 0
5.0 to 6.5
Zirconium (Zr), % 0 to 0.020
0.050 to 0.25
Residuals, % 0
0 to 0.15