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SAE-AISI H43 Steel vs. ZE41A Magnesium

SAE-AISI H43 steel belongs to the iron alloys classification, while ZE41A magnesium belongs to the magnesium alloys. There are 21 material properties with values for both materials. Properties with values for just one material (14, 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 SAE-AISI H43 steel and the bottom bar is ZE41A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
18
Tensile Strength: Ultimate (UTS), MPa 710 to 2140
210

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Melting Completion (Liquidus), °C 1530
640
Melting Onset (Solidus), °C 1480
540
Specific Heat Capacity, J/kg-K 460
970
Thermal Conductivity, W/m-K 30
110
Thermal Expansion, µm/m-K 12
27

Otherwise Unclassified Properties

Base Metal Price, % relative 14
18
Density, g/cm3 7.9
1.9
Embodied Carbon, kg CO2/kg material 8.2
24
Embodied Energy, MJ/kg 120
170
Embodied Water, L/kg 100
940

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
63
Strength to Weight: Axial, points 25 to 75
31
Strength to Weight: Bending, points 22 to 46
41
Thermal Diffusivity, mm2/s 8.3
59
Thermal Shock Resistance, points 21 to 62
12

Alloy Composition

Carbon (C), % 0.5 to 0.65
0
Chromium (Cr), % 3.8 to 4.5
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 83.2 to 85.9
0
Magnesium (Mg), % 0
91.7 to 95.4
Manganese (Mn), % 0.15 to 0.4
0 to 0.15
Molybdenum (Mo), % 7.8 to 8.5
0
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.45
0
Sulfur (S), % 0 to 0.030
0
Unspecified Rare Earths, % 0
0.75 to 1.8
Vanadium (V), % 1.8 to 2.2
0
Zinc (Zn), % 0
3.5 to 5.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3