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EN AC-71100 Aluminum vs. Grade 250 Maraging Steel

EN AC-71100 aluminum belongs to the aluminum alloys classification, while grade 250 maraging steel belongs to the iron alloys. There are 22 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 EN AC-71100 aluminum and the bottom bar is grade 250 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.1
7.3 to 17
Poisson's Ratio 0.32
0.3
Shear Modulus, GPa 27
75
Tensile Strength: Ultimate (UTS), MPa 260
970 to 1800
Tensile Strength: Yield (Proof), MPa 230
660 to 1740

Thermal Properties

Latent Heat of Fusion, J/g 490
270
Melting Completion (Liquidus), °C 580
1480
Melting Onset (Solidus), °C 520
1430
Specific Heat Capacity, J/kg-K 860
450
Thermal Expansion, µm/m-K 22
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
32
Density, g/cm3 2.9
8.2
Embodied Carbon, kg CO2/kg material 7.4
4.9
Embodied Energy, MJ/kg 140
65
Embodied Water, L/kg 1010
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8
130 to 150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 47
23
Strength to Weight: Axial, points 25
33 to 61
Strength to Weight: Bending, points 31
26 to 40
Thermal Shock Resistance, points 12
29 to 54

Alloy Composition

Aluminum (Al), % 78.7 to 83.3
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
Cobalt (Co), % 0
7.0 to 8.5
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.3
66.3 to 71.1
Magnesium (Mg), % 0.2 to 0.5
0
Manganese (Mn), % 0 to 0.15
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), % 7.5 to 9.5
0 to 0.1
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.15
0.3 to 0.5
Zinc (Zn), % 9.0 to 10.5
0
Zirconium (Zr), % 0
0 to 0.020
Residuals, % 0 to 0.15
0