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Grade 200 Maraging Steel vs. 7049 Aluminum

Grade 200 maraging steel belongs to the iron alloys classification, while 7049 aluminum belongs to the aluminum alloys. There are 24 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 200 maraging steel and the bottom bar is 7049 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 9.1 to 18
6.2 to 7.0
Poisson's Ratio 0.3
0.32
Shear Modulus, GPa 74
27
Shear Strength, MPa 600 to 890
300 to 310
Tensile Strength: Ultimate (UTS), MPa 970 to 1500
510 to 530
Tensile Strength: Yield (Proof), MPa 690 to 1490
420 to 450

Thermal Properties

Latent Heat of Fusion, J/g 260
370
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
480
Specific Heat Capacity, J/kg-K 460
860
Thermal Expansion, µm/m-K 12
23

Otherwise Unclassified Properties

Base Metal Price, % relative 31
10
Density, g/cm3 8.2
3.1
Embodied Carbon, kg CO2/kg material 4.5
8.1
Embodied Energy, MJ/kg 59
140
Embodied Water, L/kg 140
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
31 to 34
Resilience: Unit (Modulus of Resilience), kJ/m3 1240 to 5740
1270 to 1440
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
45
Strength to Weight: Axial, points 33 to 51
46 to 47
Strength to Weight: Bending, points 27 to 35
46 to 47
Thermal Shock Resistance, points 29 to 45
22 to 23

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
85.7 to 89.5
Boron (B), % 0 to 0.0030
0
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 0
0.1 to 0.22
Cobalt (Co), % 8.0 to 9.0
0
Copper (Cu), % 0
1.2 to 1.9
Iron (Fe), % 67.8 to 71.8
0 to 0.35
Magnesium (Mg), % 0
2.0 to 2.9
Manganese (Mn), % 0 to 0.1
0 to 0.2
Molybdenum (Mo), % 3.0 to 3.5
0
Nickel (Ni), % 17 to 19
0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0 to 0.1
0 to 0.25
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0.15 to 0.25
0 to 0.1
Zinc (Zn), % 0
7.2 to 8.2
Zirconium (Zr), % 0 to 0.020
0
Residuals, % 0
0 to 0.15