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ZC63A Magnesium vs. ASTM Grade HI Steel

ZC63A magnesium belongs to the magnesium alloys classification, while ASTM grade HI steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 ZC63A magnesium and the bottom bar is ASTM grade HI steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
160
Elastic (Young's, Tensile) Modulus, GPa 48
200
Elongation at Break, % 3.3
11
Fatigue Strength, MPa 94
150
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 19
79
Tensile Strength: Ultimate (UTS), MPa 220
550
Tensile Strength: Yield (Proof), MPa 130
270

Thermal Properties

Latent Heat of Fusion, J/g 330
310
Maximum Temperature: Mechanical, °C 98
1100
Melting Completion (Liquidus), °C 550
1400
Melting Onset (Solidus), °C 470
1350
Specific Heat Capacity, J/kg-K 950
490
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
23
Density, g/cm3 2.1
7.8
Embodied Carbon, kg CO2/kg material 22
4.1
Embodied Energy, MJ/kg 150
59
Embodied Water, L/kg 920
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
52
Resilience: Unit (Modulus of Resilience), kJ/m3 190
180
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 58
25
Strength to Weight: Axial, points 29
20
Strength to Weight: Bending, points 38
19
Thermal Diffusivity, mm2/s 58
3.9
Thermal Shock Resistance, points 12
12

Alloy Composition


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Carbon (C), % 0
0.2 to 0.5
Chromium (Cr), % 0
26 to 30
Copper (Cu), % 2.4 to 3.0
0
Iron (Fe), % 0
46.9 to 59.8
Magnesium (Mg), % 89.2 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.010
14 to 18
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.3
0