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ZK51A Magnesium vs. ASTM A414 Steel

ZK51A magnesium belongs to the magnesium alloys classification, while ASTM A414 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 ZK51A magnesium and the bottom bar is ASTM A414 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 4.7
15 to 26
Fatigue Strength, MPa 62
140 to 260
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Shear Strength, MPa 160
230 to 370
Tensile Strength: Ultimate (UTS), MPa 240
360 to 590
Tensile Strength: Yield (Proof), MPa 150
190 to 350

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 120
400
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 550
1420
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
49 to 50
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28
7.2 to 7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.3 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
2.2
Density, g/cm3 1.8
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 24
1.5 to 1.6
Embodied Energy, MJ/kg 160
20 to 22
Embodied Water, L/kg 940
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 10
69 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 260
100 to 330
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 64
24
Strength to Weight: Axial, points 36
13 to 21
Strength to Weight: Bending, points 47
14 to 20
Thermal Diffusivity, mm2/s 61
13
Thermal Shock Resistance, points 15
11 to 17