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7049 Aluminum vs. Grade 350 Maraging Steel

7049 aluminum belongs to the aluminum alloys classification, while grade 350 maraging steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (11, 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 7049 aluminum and the bottom bar is grade 350 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 6.2 to 7.0
4.1 to 18
Poisson's Ratio 0.32
0.3
Shear Modulus, GPa 27
75
Shear Strength, MPa 300 to 310
710 to 1400
Tensile Strength: Ultimate (UTS), MPa 510 to 530
1140 to 2420
Tensile Strength: Yield (Proof), MPa 420 to 450
830 to 2300

Thermal Properties

Latent Heat of Fusion, J/g 370
270
Melting Completion (Liquidus), °C 640
1470
Melting Onset (Solidus), °C 480
1420
Specific Heat Capacity, J/kg-K 860
450
Thermal Expansion, µm/m-K 23
12

Otherwise Unclassified Properties

Base Metal Price, % relative 10
39
Density, g/cm3 3.1
8.2
Embodied Carbon, kg CO2/kg material 8.1
5.6
Embodied Energy, MJ/kg 140
74
Embodied Water, L/kg 1110
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 34
98 to 190
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
23
Strength to Weight: Axial, points 46 to 47
38 to 82
Strength to Weight: Bending, points 46 to 47
29 to 49
Thermal Shock Resistance, points 22 to 23
35 to 74

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
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), % 0.1 to 0.22
0
Cobalt (Co), % 0
11.5 to 12.5
Copper (Cu), % 1.2 to 1.9
0
Iron (Fe), % 0 to 0.35
61.2 to 64.6
Magnesium (Mg), % 2.0 to 2.9
0
Manganese (Mn), % 0 to 0.2
0 to 0.1
Molybdenum (Mo), % 0
4.6 to 5.2
Nickel (Ni), % 0
18 to 19
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.25
0 to 0.1
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.1
1.3 to 1.6
Zinc (Zn), % 7.2 to 8.2
0
Zirconium (Zr), % 0
0 to 0.020
Residuals, % 0 to 0.15
0