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ASTM A356 Grade 2 vs. ZE41A Magnesium

ASTM A356 grade 2 belongs to the iron alloys classification, while ZE41A magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 ASTM A356 grade 2 and the bottom bar is ZE41A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
63
Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 25
3.3
Fatigue Strength, MPa 200
98
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
18
Tensile Strength: Ultimate (UTS), MPa 510
210
Tensile Strength: Yield (Proof), MPa 270
140

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Maximum Temperature: Mechanical, °C 410
150
Melting Completion (Liquidus), °C 1470
640
Melting Onset (Solidus), °C 1430
540
Specific Heat Capacity, J/kg-K 470
970
Thermal Conductivity, W/m-K 51
110
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
27
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
130

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
18
Density, g/cm3 7.9
1.9
Embodied Carbon, kg CO2/kg material 1.5
24
Embodied Energy, MJ/kg 20
170
Embodied Water, L/kg 47
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
6.1
Resilience: Unit (Modulus of Resilience), kJ/m3 190
220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
63
Strength to Weight: Axial, points 18
31
Strength to Weight: Bending, points 18
41
Thermal Diffusivity, mm2/s 14
59
Thermal Shock Resistance, points 15
12

Alloy Composition

Carbon (C), % 0 to 0.25
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 97.7 to 99.55
0
Magnesium (Mg), % 0
91.7 to 95.4
Manganese (Mn), % 0 to 0.7
0 to 0.15
Molybdenum (Mo), % 0.45 to 0.65
0
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Unspecified Rare Earths, % 0
0.75 to 1.8
Zinc (Zn), % 0
3.5 to 5.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3