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Grade 350 Maraging Steel vs. ZK61A Magnesium

Grade 350 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 350 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, % 4.1 to 18
5.8 to 7.1
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 75
18
Shear Strength, MPa 710 to 1400
170 to 180
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
290 to 310
Tensile Strength: Yield (Proof), MPa 830 to 2300
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Melting Completion (Liquidus), °C 1470
640
Melting Onset (Solidus), °C 1420
530
Specific Heat Capacity, J/kg-K 450
960
Thermal Expansion, µm/m-K 12
27

Otherwise Unclassified Properties

Base Metal Price, % relative 39
13
Density, g/cm3 8.2
1.9
Embodied Carbon, kg CO2/kg material 5.6
23
Embodied Energy, MJ/kg 74
160
Embodied Water, L/kg 160
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 190
15 to 19
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
62
Strength to Weight: Axial, points 38 to 82
42 to 45
Strength to Weight: Bending, points 29 to 49
50 to 53
Thermal Shock Resistance, points 35 to 74
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), % 11.5 to 12.5
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 61.2 to 64.6
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), % 1.3 to 1.6
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