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Grade 350 Maraging Steel vs. 238.0 Aluminum

Grade 350 maraging steel belongs to the iron alloys classification, while 238.0 aluminum belongs to the aluminum alloys. There are 22 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 grade 350 maraging steel and the bottom bar is 238.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
76
Elongation at Break, % 4.1 to 18
1.5
Poisson's Ratio 0.3
0.33
Shear Modulus, GPa 75
28
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
210
Tensile Strength: Yield (Proof), MPa 830 to 2300
170

Thermal Properties

Latent Heat of Fusion, J/g 270
430
Melting Completion (Liquidus), °C 1470
600
Melting Onset (Solidus), °C 1420
510
Specific Heat Capacity, J/kg-K 450
840
Thermal Expansion, µm/m-K 12
21

Otherwise Unclassified Properties

Base Metal Price, % relative 39
12
Density, g/cm3 8.2
3.4
Embodied Carbon, kg CO2/kg material 5.6
7.4
Embodied Energy, MJ/kg 74
140
Embodied Water, L/kg 160
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 190
2.9
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 23
42
Strength to Weight: Axial, points 38 to 82
17
Strength to Weight: Bending, points 29 to 49
23
Thermal Shock Resistance, points 35 to 74
9.1

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
81.9 to 84.9
Boron (B), % 0 to 0.0030
0
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0
Cobalt (Co), % 11.5 to 12.5
0
Copper (Cu), % 0
9.5 to 10.5
Iron (Fe), % 61.2 to 64.6
1.0 to 1.5
Magnesium (Mg), % 0
0 to 0.25
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 4.6 to 5.2
0
Nickel (Ni), % 18 to 19
0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0 to 0.1
3.6 to 4.4
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 1.3 to 1.6
0
Zinc (Zn), % 0
1.0 to 1.5
Zirconium (Zr), % 0 to 0.020
0