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Grade 300 Maraging Steel vs. M1A Magnesium

Grade 300 maraging steel belongs to the iron alloys classification, while M1A 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 300 maraging steel and the bottom bar is M1A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 6.5 to 18
5.5
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 75
18
Shear Strength, MPa 640 to 1190
120
Tensile Strength: Ultimate (UTS), MPa 1030 to 2030
230
Tensile Strength: Yield (Proof), MPa 760 to 1990
130

Thermal Properties

Latent Heat of Fusion, J/g 270
350
Melting Completion (Liquidus), °C 1480
610
Melting Onset (Solidus), °C 1430
580
Specific Heat Capacity, J/kg-K 450
990
Thermal Expansion, µm/m-K 12
26

Otherwise Unclassified Properties

Base Metal Price, % relative 34
12
Density, g/cm3 8.2
1.7
Embodied Carbon, kg CO2/kg material 5.1
24
Embodied Energy, MJ/kg 68
160
Embodied Water, L/kg 150
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
11
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
71
Strength to Weight: Axial, points 35 to 68
38
Strength to Weight: Bending, points 28 to 43
49
Thermal Shock Resistance, points 31 to 62
13

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
0
Boron (B), % 0 to 0.0030
0
Calcium (Ca), % 0 to 0.050
0 to 0.3
Carbon (C), % 0 to 0.030
0
Cobalt (Co), % 8.5 to 9.5
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 65 to 68.4
0
Magnesium (Mg), % 0
97.2 to 98.8
Manganese (Mn), % 0 to 0.1
1.2 to 2.0
Molybdenum (Mo), % 4.6 to 5.2
0
Nickel (Ni), % 18 to 19
0 to 0.010
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0 to 0.1
0 to 0.1
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0.5 to 0.8
0
Zirconium (Zr), % 0 to 0.020
0
Residuals, % 0
0 to 0.3