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Grade 300 Maraging Steel vs. ZK61A Magnesium

Grade 300 maraging steel belongs to the iron alloys classification, while ZK61A magnesium belongs to the magnesium alloys. There are 23 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 300 maraging steel and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
46
Elongation at Break, % 6.5 to 18
5.8 to 7.1
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 75
18
Shear Strength, MPa 640 to 1190
170 to 180
Tensile Strength: Ultimate (UTS), MPa 1030 to 2030
290 to 310
Tensile Strength: Yield (Proof), MPa 760 to 1990
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Melting Completion (Liquidus), °C 1480
640
Melting Onset (Solidus), °C 1430
530
Specific Heat Capacity, J/kg-K 450
960
Thermal Expansion, µm/m-K 12
27

Otherwise Unclassified Properties

Base Metal Price, % relative 34
13
Density, g/cm3 8.2
1.9
Embodied Carbon, kg CO2/kg material 5.1
23
Embodied Energy, MJ/kg 68
160
Embodied Water, L/kg 150
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
15 to 19
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
62
Strength to Weight: Axial, points 35 to 68
42 to 45
Strength to Weight: Bending, points 28 to 43
50 to 53
Thermal Shock Resistance, points 31 to 62
17 to 18

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), % 8.5 to 9.5
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 65 to 68.4
0
Magnesium (Mg), % 0
92.1 to 93.9
Manganese (Mn), % 0 to 0.1
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
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0.5 to 0.8
0
Zinc (Zn), % 0
5.5 to 6.5
Zirconium (Zr), % 0 to 0.020
0.6 to 1.0
Residuals, % 0
0 to 0.3