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Grade 250 Maraging Steel vs. ISO-WD32260 Magnesium

Grade 250 maraging steel belongs to the iron alloys classification, while ISO-WD32260 magnesium belongs to the magnesium 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 ISO-WD32260 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
46
Elongation at Break, % 7.3 to 17
4.5 to 6.0
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 75
18
Shear Strength, MPa 600 to 1060
190 to 200
Tensile Strength: Ultimate (UTS), MPa 970 to 1800
330 to 340
Tensile Strength: Yield (Proof), MPa 660 to 1740
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Melting Completion (Liquidus), °C 1480
600
Melting Onset (Solidus), °C 1430
520
Specific Heat Capacity, J/kg-K 450
970
Thermal Expansion, µm/m-K 12
27

Otherwise Unclassified Properties

Base Metal Price, % relative 32
13
Density, g/cm3 8.2
1.9
Embodied Carbon, kg CO2/kg material 4.9
23
Embodied Energy, MJ/kg 65
160
Embodied Water, L/kg 140
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 150
14 to 19
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
63
Strength to Weight: Axial, points 33 to 61
48 to 51
Strength to Weight: Bending, points 26 to 40
56 to 58
Thermal Shock Resistance, points 29 to 54
19 to 20

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
0
Boron (B), % 0 to 0.0030
0
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0
Cobalt (Co), % 7.0 to 8.5
0
Iron (Fe), % 66.3 to 71.1
0
Magnesium (Mg), % 0
92.7 to 94.8
Manganese (Mn), % 0 to 0.1
0
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
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0.3 to 0.5
0
Zinc (Zn), % 0
4.8 to 6.2
Zirconium (Zr), % 0 to 0.020
0.45 to 0.8
Residuals, % 0
0 to 0.3